Pacific Partnership is an annual deployment of forces from the Pacific Fleet of the United States Navy (USN), in cooperation with regional governments and military forces, along with humanitarian and non-government organizations .
173-457: The deployment was conceived following the 2004 Indian Ocean earthquake and tsunami , as a way to improve the interoperability of the region's military forces, governments, and humanitarian organisations during disaster relief operations, while providing humanitarian , medical, dental, and engineering assistance to nations of the Pacific, and strengthening relationships and security ties between
346-663: A line source ). This greatly increased the geographical area over which the waves were observed, reaching as far as Mexico, Chile, and the Arctic. The raising of the seafloor significantly reduced the capacity of the Indian Ocean, producing a permanent rise in the global sea level by an estimated 0.1 mm (0.004 in). Numerous aftershocks were reported off the Andaman Islands , the Nicobar Islands and
519-624: A plantation economy to promote export of tobacco , indigo , tea and coffee . However, they largely ignored the increasing demands for civil rights and self-government . An increasing dissatisfaction, even led to half-hearted, badly co-ordinated, and still worsely executed plots to oust the French, like the infamous Hanoi Poison Plot of 1908. A nationalist political movement soon emerged, with leaders like Phan Bội Châu , Phan Châu Trinh , Phan Đình Phùng , Emperor Hàm Nghi , and Hồ Chí Minh fighting or calling for independence. This resulted in
692-466: A 2.6 m (8.5 ft) crest-to-trough tsunami was measured. As well, the tsunami was large enough to be detected in Vancouver , which puzzled many scientists, as the tsunamis measured in some parts of South America were larger than those measured in some parts of the Indian Ocean. It has been theorized that the tsunamis were focused and directed at long ranges by the mid-ocean ridges which run along
865-480: A busload of vacationers and locals to safety on higher ground. Anthropologists had initially expected the aboriginal population of the Andaman Islands to be badly affected by the tsunami and even feared the already depopulated Onge tribe could have been wiped out. Many of the aboriginal tribes evacuated and suffered fewer casualties, however. Oral traditions developed from previous earthquakes helped
1038-618: A causal relationship between these events. The 2004 Indian Ocean earthquake is thought to have triggered activity in both Leuser Mountain and Mount Talang , volcanoes in Aceh along the same range of peaks, while the 2005 Nias–Simeulue earthquake sparked activity in Lake Toba , a massive caldera in Sumatra. The energy released on the Earth's surface ( M e , the energy magnitude, which
1211-536: A chief justice, is the country's highest court of appeal , though it is also answerable to the National Assembly. Beneath the Supreme People's Court stand the provincial municipal courts and many local courts . Military courts possess special jurisdiction in matters of state security . Vietnam maintains the death penalty for numerous offences. In 2023, a three-person collective leadership
1384-479: A few mosques remained standing. The greatest run-up height of the tsunami was measured at a hill between Lhoknga and Leupung , on the western coast of the northern tip of Sumatra, near Banda Aceh, and reached 51 m (167 ft). The tsunami heights in Sumatra: The island country of Sri Lanka, located about 1,700 km (1,100 mi) from Sumatra, was ravaged by the tsunami around two hours after
1557-442: A landmass between them and the tsunami's location of origin are usually safe; however, tsunami waves can sometimes diffract around such landmasses. Thus, the state of Kerala was hit by the tsunami despite being on the western coast of India, and the western coast of Sri Lanka suffered substantial impacts. Distance alone was no guarantee of safety, as Somalia was hit harder than Bangladesh despite being much farther away. Because of
1730-453: A large turbulent bore. Eyewitnesses described the tsunami as a "black giant", "mountain" and a "wall of water". Video footage revealed torrents of black water, surging by windows of a two-story residential area situated about 3.2 km (2.0 mi) inland. Additionally, amateur footage recorded in the middle of the city captured an approaching black surge flowing down the city streets, full of debris, inundating them. The level of destruction
1903-441: A low, broad hump, barely noticeable and harmless, which generally travels at the high speed of 500 to 1,000 km/h (310 to 620 mph); in shallow water near coastlines, a tsunami slows down to only tens of kilometres per hour but, in doing so, forms large destructive waves. Scientists investigating the damage in Aceh found evidence that the wave reached a height of 24 m (80 ft) when coming ashore along large stretches of
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#17327766959532076-401: A magnitude of as high as 6.9 ) and presently ranks as the third-largest earthquake ever recorded on the moment magnitude or Richter scale . Other aftershocks of up to magnitude 7.2 continued to shake the region daily for three or four months. As well as continuing aftershocks, the energy released by the original earthquake continued to make its presence felt well after the event. A week after
2249-447: A major earthquake under ordinary circumstances but is dwarfed by the mainshock . The shift of mass and the massive release of energy slightly altered the Earth's rotation. Weeks after the earthquake, theoretical models suggested the earthquake shortened the length of a day by 2.68 microseconds , due to a decrease in the oblateness of the Earth. It also caused the Earth to minutely "wobble" on its axis by up to 25 mm (1 in) in
2422-740: A modern independent Vietnam. But the Provisional Government of the French Republic did not act on these requests, including the idea of independence, and dispatched the French Far East Expeditionary Corps to restore colonial rule. This resulted in the Việt Minh launching a guerrilla campaign against the French in late 1946. The resulting First Indochina War lasted until July 1954. The defeat of French colonialists and Vietnamese loyalists in
2595-486: A month after the earthquake found the movement to be about 0.2 m (8 in). Since movement was vertical as well as lateral, some coastal areas may have been moved to below sea level. The Andaman and Nicobar Islands appear to have shifted south-west by around 1.25 m (4 ft 1 in) and to have sunk by 1 m (3 ft 3 in). In February 2005, the Royal Navy vessel HMS Scott surveyed
2768-617: A network of sensors is needed to detect it. Tsunamis are more frequent in the Pacific Ocean than in other oceans because of earthquakes in the " Ring of Fire ". Although the extreme western edge of the Ring of Fire extends into the Indian Ocean (the point where the earthquake struck), no warning system exists in that ocean. Tsunamis there are relatively rare despite earthquakes being relatively frequent in Indonesia. The last major tsunami
2941-972: A new building for two health clinics. During Pacific Partnership 2019, members of Naval Mobile Construction Battalion 4 (NMCB 4) deployed to Tuy Hòa , Phú Yên , Vietnam , where they constructed the Hòa Phú commune clinic. In Cambodia 12,679 patients were triaged; three surgical civic assistance programs resulting in 218 surgeries on board hospital ship USNS Mercy (T-AH 19) and at Preah Kossamek military hospital in Phnom Penh; four medical subject matter expert exchanges (SMEEs) on surgeries and medical techniques; three bio-medical repair SMEEs which resulted in 64 equipment repairs; two veterinary civic assistance projects where 1,375 animals received exams and treatments; three engineering civic assistance projects resulting in three new maternity wards. The 2013 mission included significant participation by three key nations dividing up
3114-527: A presence there after several violent encounters with the locals. The Dutch East India Company (VOC) only managed to establish official relations with Tonkin in the spring of 1637 after leaving Dejima in Japan to establish trade for silk . Meanwhile, in 1613, the first English attempt to establish contact with Hội An failed following a violent incident involving the East India Company . By 1672
3287-577: A provisional government, which asserted national independence on 2 September. In July 1945, the Allies had decided to divide Indochina at the 16th parallel to allow Chiang Kai-shek of the Republic of China to receive the Japanese surrender in the north while Britain's Lord Louis Mountbatten received their surrender in the south. The Allies agreed that Indochina still belonged to France. But as
3460-575: A rise in income inequality and gender disparities. In 2021, General Secretary of the Communist Party, Nguyen Phu Trong , was re-elected for his third term in office, meaning he is Vietnam's most powerful leader in decades. Vietnam is located on the eastern Indochinese Peninsula between the latitudes 8° and 24°N , and the longitudes 102° and 110°E . It covers a total area of 331,210 km (127,881 sq mi) or 331,699 km (128,070 sq mi). The combined length of
3633-423: A single block of rock some 100 m (330 ft) high and 2 km (1.2 mi) long. The momentum of the water displaced by tectonic uplift had also dragged massive slabs of rock, each weighing millions of tonnes, as far as 10 km (6 mi) across the seabed. An oceanic trench several kilometres wide was exposed in the earthquake zone. The TOPEX/Poseidon and Jason-1 satellites happened to pass over
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#17327766959533806-496: Is a low-level plain no more than 3 metres (9.8 ft) above sea level at any point. It is criss-crossed by a maze of rivers and canals, which carry so much sediment that the delta advances 60 to 80 metres (196.9 to 262.5 ft) into the sea every year. The exclusive economic zone of Vietnam covers 417,663 km (161,261 sq mi) in the South China Sea . Southern Vietnam is divided into coastal lowlands,
3979-434: Is believed to have been a foreshock , preceding the main event by over two years. Great earthquakes, such as the 2004 Indian Ocean earthquake, are associated with megathrust events in subduction zones. Their seismic moments can account for a significant fraction of the global seismic moment across century-scale periods. Of all the moment released by earthquakes in the 100 years from 1906 through 2005, roughly one eighth
4152-421: Is best representative of the earthquake's size. More recent studies estimate the magnitude to be M w 9.3. A 2016 study estimated the magnitude to be M w 9.25, while a 2021 study revised its 2007 estimate of M w 9.1 to a new magnitude of M w 9.2. The hypocentre of the main earthquake was approximately 160 km (100 mi) off the western coast of northern Sumatra, in
4325-405: Is more than twice the total explosive energy used during all of World War II (including the two atomic bombs) but still a couple of orders of magnitude less than the energy released in the earthquake itself. In many places, the waves reached as far as 2 km (1.2 mi) inland. Because the 1,600 km (1,000 mi) fault affected by the earthquake was in a nearly north–south orientation,
4498-518: Is one of the most vulnerable countries to climate change, with 55% of its population living in low-elevation coastal areas. As the country is located within the Indomalayan realm , Vietnam is one of twenty-five countries considered to possess a uniquely high level of biodiversity . This was noted in the country's National Environmental Condition Report in 2005. It is ranked 16th worldwide in biological diversity, being home to approximately 16% of
4671-836: Is part of the Indo-Australian plate , which underlies the Indian Ocean and Bay of Bengal , and is moving north-east at an average of 60 mm/a (0.075 in/Ms). The India Plate meets the Burma plate (which is considered a portion of the great Eurasian plate ) at the Sunda Trench . At this point, the India Plate subducts beneath the Burma plate, which carries the Nicobar Islands, the Andaman Islands, and northern Sumatra. The India Plate sinks deeper and deeper beneath
4844-482: Is the deadliest natural disaster of the 21st century , and the worst tsunami disaster in history. It is also the worst natural disaster in the history of Indonesia, Sri Lanka and Thailand. It was the most powerful earthquake ever recorded in Asia, the most powerful earthquake in the 21st century, and at least the third most powerful earthquake ever recorded in the world since modern seismography began in 1900. It had
5017-547: Is the seismic potential for damage ) by the 2004 Indian Ocean earthquake was estimated at 1.1 × 10 joules . The earthquake generated a seismic oscillation of the Earth's surface of up to 200–300 mm (8–12 in), equivalent to the effect of the tidal forces caused by the Sun and Moon. The seismic waves of the earthquake were felt across the planet, as far away as the U.S. state of Oklahoma , where vertical movements of 3 mm (0.12 in) were recorded. By February 2005,
5190-524: Is the legacy of the use of the chemical herbicide Agent Orange , which continues to cause birth defects and many health problems in the Vietnamese population. In the southern and central areas affected most by the chemical's use during the Vietnam War, nearly 4.8 million Vietnamese people have been exposed to it and suffered from its effects. In 2012, approximately 50 years after the war,
5363-908: The ASEAN , the APEC , the CPTPP , the Non-Aligned Movement , the OIF , and the WTO . It has assumed a seat on the United Nations Security Council twice. The name Việt Nam ( pronounced [viə̂tˀ nāːm] , chữ Hán : 越南 ), literally "Viet South", means "Viet of the South" per Vietnamese word order or "South of the Viet" per Classical Chinese word order. A variation of
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5536-494: The Chinese economic reform , transforming the country to a socialist-oriented market economy . The reforms facilitated Vietnamese reintegration into the global economy and politics . Vietnam is a developing country with a lower-middle-income economy. It has high levels of corruption , censorship , environmental issues and a poor human rights record . It is part of international and intergovernmental institutions including
5709-545: The Demilitarised Zone , roughly along the 17th parallel north (pending elections scheduled for July 1956 ). A 300-day period of free movement was permitted, during which almost a million northerners, mainly Catholics, moved south, fearing persecution by the communists. This migration was in large part aided by the United States military through Operation Passage to Freedom . The partition of Vietnam by
5882-617: The Empire of Japan in 1945. Vietnam went through prolonged warfare in the 20th century. After World War II , France returned to reclaim colonial power in the First Indochina War , from which Vietnam emerged victorious in 1954. As a result of the treaties signed between the Viet Minh and France, Vietnam was also separated into two parts. The Vietnam War began shortly after, between the communist North Vietnam , supported by
6055-671: The Federated States of Micronesia , the operation aimed to implement sustainability projects in these nations. In the first three ports, 21,000 patients were treated, thousands of contact hours of formal Subject Matter Expert Exchanges (SMEEs) were completed, and classrooms and a water catchment system were built. The total cost of the 2011 mission is reportedly $ 20 million or almost $ 4 million for each port of call. Between 2006 and 2010, Pacific Partnership has visited 13 countries, treated more than 300,000 patients, and built over 130 engineering projects. The 2012 deployment began with
6228-604: The Khmer Rouge government of Cambodia ordering massacres of Vietnamese residents in the border villages in the districts of An Giang and Kiên Giang , the Vietnamese military invaded Cambodia and removed them from power after occupying Phnom Penh . The intervention was a success, resulting in the establishment of a new, pro-Vietnam socialist government, the People's Republic of Kampuchea , which ruled until 1989. However, this worsened relations with China, which had supported
6401-576: The Khúc family . In AD 938, the Vietnamese lord Ngô Quyền defeated the forces of the Chinese Southern Han state at Bạch Đằng River and achieved full independence for Vietnam in 939 after a millennium of Chinese domination. By the 960s, the dynastic Đại Việt ( Great Viet ) kingdom was established, Vietnamese society enjoyed a golden era under the Lý and Trần dynasties. During the rule of
6574-761: The Late Pleistocene have been found at Dong Can, and from the Early Holocene at Mai Da Dieu, Lang Gao and Lang Cuom. Areas comprising what is now Vietnam participated in the Maritime Jade Road , as ascertained by archeological research. By about 1,000 BC, the development of wet- rice cultivation in the Ma River and Red River floodplains led to the flourishing of Đông Sơn culture , notable for its bronze casting used to make elaborate bronze Đông Sơn drums . At this point,
6747-722: The Nguyễn dynasty , ruling under the name Gia Long . In the 1500s, the Portuguese explored the Vietnamese coast and reportedly erected a stele on the Chàm Islands to mark their presence. By 1533, they began landing in the Vietnamese delta but were forced to leave because of local turmoil and fighting. They also had less interest in the territory than they did in China and Japan. After they had settled in Macau and Nagasaki to begin
6920-634: The Nguyễn dynasty . In the second year of his rule, he asked the Jiaqing Emperor of the Qing dynasty to confer on him the title 'King of Nam Việt / Nanyue' ( 南越 in Chinese character) after seizing power in Annam. The Emperor refused because the name was related to Zhao Tuo 's Nanyue, which included the regions of Guangxi and Guangdong in southern China. The Qing Emperor, therefore, decided to call
7093-559: The Red River Delta in modern-day northern Vietnam . The Han dynasty annexed Northern and Central Vietnam, which were subsequently under Chinese rule from 111 BC until the first dynasty emerged in 939. Successive monarchical dynasties absorbed Chinese influences through Confucianism and Buddhism , and expanded southward to the Mekong Delta , conquering Champa . During most of the 17th and 18th centuries, Vietnam
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7266-646: The Republic of Vietnam in the south—supported by the United States, France, Laos , Republic of China and Thailand—and Hồ's Democratic Republic of Vietnam in the north, supported by the Soviet Union, Sweden, Khmer Rouge , and the People's Republic of China . From 1953 to 1956, the North Vietnamese government instituted agrarian reforms including " rent reduction " and " land reform ", which resulted in significant political repression . This included 13,500 to as many as 100,000 executions. In
7439-743: The Soviet Union and China , and the anti-communist South Vietnam , supported by the United States . Upon the North Vietnamese victory in 1975, Vietnam reunified as a unitary socialist state under the Communist Party of Vietnam (CPV) in 1976. An ineffective planned economy , a trade embargo by the West , and wars with Cambodia and China crippled the country further. In 1986, the CPV initiated economic and political reforms similar to
7612-479: The Vietnamese Fatherland Front and worker and trade unionist parties. The National Assembly of Vietnam is the unicameral state legislature composed of 500 members. Headed by a chairman , it is superior to both the executive and judicial branches, with all government ministers being appointed from members of the National Assembly. The Supreme People's Court of Vietnam , headed by
7785-506: The affected people and countries prompted a worldwide humanitarian response , with donations totalling more than US$ 14 billion (equivalent to US$ 23 billion in 2023 currency). The 2004 Indian Ocean earthquake was initially documented as having a moment magnitude of 8.8. The United States Geological Survey has its estimate of 9.1. Hiroo Kanamori of the California Institute of Technology estimates that M w 9.2
7958-465: The collapse of Diệm's relationship with the United States , and ultimately to a 1963 coup in which he and Nhu were assassinated . The Diệm era was followed by more than a dozen successive military governments, before the pairing of Air Marshal Nguyễn Cao Kỳ and General Nguyễn Văn Thiệu took control in mid-1965. Thiệu gradually outmaneuvered Kỳ and cemented his grip on power in fraudulent elections in 1967 and 1971. During this political instability,
8131-570: The constitution , the Communist Party of Vietnam (CPV) asserts their role in all branches of the country's politics and society. The president is the elected head of state and the commander-in-chief of the military, serving as the chairman of the Council of Supreme Defence and Security, and holds the second highest office in Vietnam as well as performing executive functions and state appointments and setting policy. The general secretary of
8304-816: The ground water in the Mekong and Red River Deltas has also become a major concern. And most notoriously, unexploded ordnances (UXO) pose dangers to humans and wildlife—another bitter legacy from the long wars. As part of the continuous campaign to demine /remove UXOs, several international bomb removal agencies from the United Kingdom, Denmark, South Korea and the US have been providing assistance. The Vietnam government spends over VNĐ1 trillion ($ 44 million) annually on demining operations and additional hundreds of billions of đồng for treatment, assistance, rehabilitation, vocational training and resettlement of
8477-658: The saola , giant muntjac and Tonkin snub-nosed monkey have also been discovered, along with one new bird species, the endangered Edwards's pheasant . In the late 1980s, a small population of Javan rhinoceros was found in Cát Tiên National Park. However, the last individual of the species in Vietnam was reportedly shot in 2010. In agricultural genetic diversity , Vietnam is one of the world's twelve original cultivar centres. The Vietnam National Cultivar Gene Bank preserves 12,300 cultivars of 115 species. The Vietnamese government spent US$ 49.07 million on
8650-604: The siege of Tourane in 1858, France was aided by Spain (with Filipino, Latin American , and Spanish troops from the Philippines ) and perhaps some Tonkinese Catholics. After the 1862 Treaty , and especially after France completely conquered Lower Cochinchina in 1867, the Văn Thân movement of scholar-gentry class arose and committed violence against Catholics across central and northern Vietnam. Between 1862 and 1867,
8823-621: The subduction zone where the Indian plate slides under (or subducts) the overriding Burma plate. The slip did not happen instantaneously but took place in two phases over several minutes: Seismographic and acoustic data indicate that the first phase involved a rupture about 400 km (250 mi) long and 100 km (60 mi) wide, 30 km (19 mi) beneath the sea bed—the largest rupture ever known to have been caused by an earthquake. The rupture proceeded at about 2.8 km/s (1.74 mi/s; 10,100 km/h; 6,260 mph), beginning off
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#17327766959538996-646: The 1930 Yên Bái mutiny by the Vietnamese Nationalist Party (VNQDĐ), which the French quashed. The mutiny split the independence movement, as many leading members converted to communism . The French maintained full control of their colonies until World War II, when the war in the Pacific led to the Japanese invasion of French Indochina in 1940. Afterwards, the Japanese Empire was allowed to station its troops in Vietnam while
9169-410: The 1954 battle of Điện Biên Phủ allowed Hồ to negotiate a ceasefire from a favourable position at the subsequent Geneva Conference . The colonial administration was thereby ended and French Indochina was dissolved under the Geneva Accords of 21 July 1954 into three countries—Vietnam, and the kingdoms of Cambodia and Laos . Vietnam was further divided into North and South administrative regions at
9342-440: The 2009 deployment was the dry cargo ship USNS Richard E. Bird , which visited the Oceanic nations of Kiribati , the Marshall Islands , Samoa , the Solomon Islands , and Tonga . In 2008, the pacific Partnership sailed again on board the U.S.N.S. Mercy . Sailing from San Diego on May 1, 2008, they passed through Hawaii to the South Pacific. Pacific Partnership provided humanitarian and engineering assistance by visiting
9515-476: The 3rd century BC, the term was used for the non-Chinese populations of southern China and northern Vietnam, with particular ethnic groups called Minyue , Ouyue , Luoyue (Vietnamese: Lạc Việt ), etc., collectively called the Baiyue (Bách Việt, Chinese : 百越 ; pinyin : Bǎiyuè ; Cantonese Yale : Baak Yuet ; Vietnamese : Bách Việt ; lit. 'Hundred Yue/Viet'). The term 'Baiyue'/'Bách Việt' first appeared in
9688-406: The Burma plate until the increasing temperature and pressure drive volatiles out of the subducting plate. These volatiles rise into the overlying plate, causing partial melting and the formation of magma. The rising magma intrudes into the crust above and exits the Earth's crust through volcanoes in the form of a volcanic arc . The volcanic activity that results as the Indo-Australian plate subducts
9861-408: The CPV performs numerous key administrative functions, controlling the party's national organisation. The prime minister is the head of government , presiding over a council of ministers composed of five deputy prime ministers and the heads of 26 ministries and commissions. Only political organisations affiliated with or endorsed by the CPV are permitted to contest elections in Vietnam. These include
10034-405: The Chinese coast and across the Gulf of Tonkin, picking up considerable moisture. The average annual temperature is generally higher in the plains than in the mountains, especially in southern Vietnam compared to the north. Temperatures vary less in the southern plains around Ho Chi Minh City and the Mekong Delta, ranging from between 21 and 35 °C (70 and 95 °F) over the year. In Hanoi and
10207-446: The Chinese-supported Mạc dynasty challenged the Lê dynasty's power. After the Mạc dynasty was defeated, the Lê dynasty was nominally reinstalled. Actual power, however, was divided between the northern Trịnh lords and the southern Nguyễn lords , who engaged in a civil war for more than four decades before a truce was called in the 1670s. Vietnam was divided into North (Trịnh) and South (Nguyễn) from 1600 to 1777. During this period,
10380-572: The Coral Triangle that provides a habitat to 390 species of coral as well as many fish, mollusk, reptile and marine mammal species. In Indonesia 200 surgeries were performed, over 2300 livestock and pets received veterinary care, and over 9,000 local citizens received medical evals and treatments. Philippines witnessed 271 surgeries, and the PP12 team treated over 16,000 patients. In Vietnam PP12 performed over 12,000 medical treatments; performed 207 surgeries; conducted nearly 4,000 treatments on 1,600 livestock and domestic animals; and completed renovations and
10553-426: The Earth on the vertical axis (note the 1 cm scale bar at the bottom for scale). The seismograms are arranged vertically by distance from the epicentre in degrees. The earliest, lower amplitude signal is that of the compressional (P) wave , which takes about 22 minutes to reach the other side of the planet (the antipode ; in this case near Ecuador). The largest amplitude signals are seismic surface waves that reach
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#173277669595310726-459: The English did establish relations with Tonkin and were allowed to reside in Phố Hiến . Between 1615 and 1753, French traders also engaged in trade in Vietnam. The first French missionaries arrived in 1658, under the Portuguese Padroado . From its foundation, the Paris Foreign Missions Society under Propaganda Fide actively sent missionaries to Vietnam, entering Cochinchina first in 1664 and Tonkin first in 1666. Spanish Dominicans joined
10899-406: The Eurasian plate has created the Sunda Arc . As well as the sideways movement between the plates, the 2004 Indian Ocean earthquake resulted in a rise of the seafloor by several metres, displacing an estimated 30 km (7.2 cu mi) of water and triggering devastating tsunami waves. The waves radiated outwards along the entire 1,600 km (1,000 mi) length of the rupture (acting as
11072-443: The French were weakened by the German occupation , British-Indian forces and the remaining Japanese Southern Expeditionary Army Group were used to maintain order and help France reestablish control through the 1945–1946 War in Vietnam . Hồ initially chose to take a moderate stance to avoid military conflict with France, asking the French to withdraw their colonial administrators and for French professors and engineers to help build
11245-429: The Geneva Accords was not intended to be permanent, and stipulated that Vietnam would be reunited after the elections. But in 1955, the southern State of Vietnam's prime minister, Ngô Đình Diệm , toppled Bảo Đại in a fraudulent referendum organised by his brother Ngô Đình Nhu , and proclaimed himself president of the Republic of Vietnam . This effectively replaced the internationally recognised State of Vietnam by
11418-478: The Indian Ocean just north of Simeulue island at a depth of 30 km (19 mi) below mean sea level (initially reported as 10 km or 6.2 mi). The northern section of the Sunda megathrust ruptured over a length of 1,300 km (810 mi). The earthquake (followed by the tsunami) was felt in Bangladesh , India , Malaysia , Myanmar , Thailand , Sri Lanka and the Maldives . Splay faults, or secondary "pop up faults", caused long, narrow parts of
11591-466: The Khmer Rouge. China later launched a brief incursion into northern Vietnam in 1979, causing Vietnam to rely even more heavily on Soviet economic and military aid, while mistrust of the Chinese government escalated. At the Sixth National Congress of the Communist Party of Vietnam (CPV) in December 1986, reformist politicians replaced the "old guard" government with new leadership. The reformers were led by 71-year-old Nguyễn Văn Linh , who became
11764-450: The Lê dynasty of the 15th century, especially during the reign of emperor Lê Thánh Tông (1460–1497). Between the 11th and 18th centuries, the Vietnamese polity expanded southward in a gradual process known as Nam tiến ("Southward expansion"), eventually conquering the kingdom of Champa and part of the Khmer Kingdom . From the 16th century onward, civil strife and frequent political infighting engulfed much of Đại Việt. First,
11937-422: The NGO volunteers worked together to provide humanitarian and civic assistance to six different locations within Micronesia. The Chuuk State Hospital at Weno Island was the beneficiary of the Naval Seabees as they reconstructed the facility. The Federated States of Micronesia (FSM) President Emanuel Mori signed into congressional law a resolution thanking the USNS Mercy (T-AH19) Pacific Partnership mission during
12110-459: The Nguyễn expanded southern Vietnam into the Mekong Delta , annexing the Central Highlands and the Khmer lands in the Mekong Delta. The division of the country ended a century later when the Tây Sơn brothers helped Trịnh to end Nguyễn, they also established new dynasty and ended Trịnh. However, their rule did not last long, and they were defeated by the remnants of the Nguyễn lords, led by Nguyễn Ánh . Nguyễn Ánh unified Vietnam, and established
12283-526: The Pacific Fleet prepared another deployment, this time based aboard the amphibious warfare ship USS Peleliu . Nations visited included the Philippines , Vietnam , Papua New Guinea , the Solomon Islands , and the Marshall Islands . 2008 saw USNS Mercy visit the Federated States of Micronesia , Papua New Guinea , the Philippines , Timor-Leste , and Vietnam . During Pacific Partnership 2008, over 90,000 patients were treated, including 14,000 dental patients and 1,300 surgery patients. The flagship for
12456-468: The Pacific Ocean. In comparison to the 2004 Indian Ocean earthquake, the death toll from these earthquakes and tsunamis was significantly lower, primarily because of the lower population density along the coasts near affected areas. Comparisons with earlier earthquakes are difficult, as earthquake strength was not measured systematically until the 1930s. However, historical earthquake strength can sometimes be estimated by examining historical descriptions of
12629-418: The Pacific, and strengthening relationships and security ties between the nations. The first such deployment was conducted in 2006, based aboard the hospital ship USNS Mercy , and included partner nations such as Australia (which has contributed consistently since), and non-government organizations . The deployment visited the Philippines , Bangladesh , Indonesia , West Timor , and East Timor . In 2007,
12802-485: The Red River Delta, Mekong Delta, Western Nghệ An , Cà Mau , and Cu Lao Cham Marine Park . Vietnam is also home to 1,438 species of freshwater microalgae , constituting 9.6% of all microalgae species, as well as 794 aquatic invertebrates and 2,458 species of sea fish. In recent years, 13 genera , 222 species, and 30 taxa of flora have been newly described in Vietnam. Six new mammal species, including
12975-649: The Republic of the Philippines, Vietnam, Timor-Leste and Papua New Guinea. The Mercy returned via Guam and Hawaii, arriving in San Diego on September 25, 2008. The USNS Mercy (T-AH 19) and her crew of U.S. military, partner-nation representatives and non-governmental organizations (NGO) arrived in Chuuk, Federated States of Micronesia, for the final mission site for Pacific Partnership 2008. This mission reflected
13148-434: The South, Diệm countered North Vietnamese subversion (including the assassination of over 450 South Vietnamese officials in 1956) by detaining tens of thousands of suspected communists in "political reeducation centres". This program incarcerated many non-communists, but was successful at curtailing communist activity in the country, if only for a time. The North Vietnamese government claimed that 2,148 people were killed in
13321-516: The Soviet Union provided North Vietnam with significant material aid and 15,000 combat advisers. Communist forces supplying the Việt Cộng carried supplies along the Hồ Chí Minh trail , which passed through Laos . The communists attacked South Vietnamese targets during the 1968 Tết Offensive . The campaign failed militarily, but shocked the American establishment and turned US public opinion against
13494-591: The Tonkin mission in 1676, and Franciscans were in Cochinchina from 1719 to 1834. The Vietnamese authorities began to feel threatened by continuous Christianisation activities. After several Catholic missionaries were detained, the French Navy intervened in 1843 to free them, as the kingdom was perceived as xenophobic . In a series of conquests from 1859 to 1885, France eroded Vietnam's sovereignty. At
13667-665: The Trần dynasty, Đại Việt repelled three Mongol invasions . Meanwhile, the Mahāyāna branch of Buddhism flourished and became the state religion. Following the 1406–7 Ming–Hồ War , which overthrew the Hồ dynasty , Vietnamese independence was interrupted briefly by the Chinese Ming dynasty , but was restored by Lê Lợi , the founder of the Lê dynasty . The Vietnamese polity reached their zenith in
13840-434: The US began a US$ 43 million joint clean-up project in the former chemical storage areas in Vietnam to take place in stages. Following the completion of the first phase in Đà Nẵng in late 2017, the US announced its commitment to clean other sites, especially in the heavily impacted site of Biên Hòa . The Vietnamese government spends over VNĐ 10 trillion each year ($ 431.1 million) for monthly allowances and
14013-417: The US or the defunct South Vietnamese government, confounding Western fears, but up to 300,000 South Vietnamese were sent to reeducation camps , where many endured torture, starvation, and disease while being forced to perform hard labour. The government embarked on a mass campaign of collectivisation of farms and factories. Many fled the country following the conclusion of the war. In 1978, in response to
14186-517: The USNS Mercy departing San Diego on 3 May and concluding its last humanitarian/medical mission in Cambodia on 11 August before heading for home port. Its goal was to establish opportunities for multinational crisis response capabilities supporting humanitarian and civic actions. The Mercy made two port calls on its way back; Guam and Hawaii. In addition to USN personnel, various other branches of
14359-480: The United States Armed Forces, government agencies, non-government agencies, as well as the militaries of Australia, Canada, Chile, Japan, Malaysia, Peru, Netherlands, New Zealand, Singapore, South Korea, and Thailand. One of the highlighted accomplishments was the development of a self-sustaining ecosystem at Bunaken National Park. Bunaken National Marine Park is a marine reserve park located in
14532-580: The United States response to the 2004 Indian Ocean earthquake and tsunami , the United States Navy saw the opportunity to build on the goodwill created by this operation, and conceived an annual deployment to the region. The aim of this deployment, Pacific Partnership, was to improve the interoperability of the region's military forces, governments, and humanitarian organisations during disaster relief operations, while providing humanitarian , medical, dental, and engineering assistance to nations of
14705-527: The Vietnamese revolutionary leader Hồ Chí Minh . The Việt Minh sought independence for Vietnam from France and the end of the Japanese occupation . After the military defeat of Japan in World War II and the fall of its puppet government Empire of Vietnam in August 1945, Saigon's administrative services collapsed and chaos, riots, and murder were widespread. The Việt Minh occupied Hanoi and proclaimed
14878-509: The aboriginal tribes escape the tsunami. For example, the folklore of the Onges talks of "huge shaking of ground followed by high wall of water". Almost all of the Onge people seemed to have survived the tsunami. The tsunami devastated the coastline of Aceh province, about 20 minutes after the earthquake. Banda Aceh , the closest major city, suffered severe casualties. The sea receded and exposed
15051-751: The amphibious warfare ship USS Cleveland . In addition to USN personnel, resources deployed include personnel and equipment from other branches of the United States Armed Forces , government agencies, non-government organizations, and the militaries of Canada, Singapore, and Spain; ships from the United States Coast Guard, Australia, New Zealand, and Japan; and a helicopter team from France. In addition to carrying out medical and engineering infrastructure projects in Tonga , Vanuatu , Papua New Guinea , Timor-Leste , and
15224-456: The antipode after about 100 minutes. The surface waves can be clearly seen to reinforce near the antipode (with the closest seismic stations in Ecuador), and to subsequently encircle the planet to return to the epicentral region after about 200 minutes. A major aftershock (magnitude 7.1) can be seen at the closest stations starting just after the 200-minute mark. The aftershock would be considered
15397-533: The area "Việt Nam" instead, meaning "South of the Viet" per Classical Chinese word order but the Vietnamese understood it as "Viet of the South" per Vietnamese word order. Between 1804 and 1813, the name Vietnam was used officially by Emperor Gia Long. It was revived in the early 20th century in Phan Bội Châu 's History of the Loss of Vietnam , and later by the Vietnamese Nationalist Party (VNQDĐ). The country
15570-591: The book Lüshi Chunqiu compiled around 239 BC. By the 17th and 18th centuries AD, educated Vietnamese apparently referred to themselves as người Việt (Viet people) or người Nam (southern people). The form Việt Nam ( 越南 ) is first recorded in the 16th-century oracular poem Sấm Trạng Trình . The name has also been found on 12 steles carved in the 16th and 17th centuries, including one at Bao Lam Pagoda in Hải Phòng that dates to 1558. In 1802, Nguyễn Phúc Ánh (who later became Emperor Gia Long) established
15743-401: The capital city. The tsunami reached a run-up of 10–20 m (33–66 ft) on the western shorelines of Breueh Island and Nasi Island . Coastal villages were destroyed by the waves. On Weh Island , strong surges were experienced in the port of Sabang , yet there was little damage with reported runup values of 3–5 m (9.8–16.4 ft), most likely due to the island being sheltered from
15916-588: The city was just at the level of the second floor, and there were large amounts of debris piled along the streets and in the ground-floor storefronts. In the seaside section of Ulee Lheue, the flow depths were over 9 m (30 ft). Footage showed evidence of back-flowing of the Aceh River , carrying debris and people from destroyed villages at the coast and transporting them up to 40 km (25 mi) inland. A group of small islands: Weh, Breueh, Nasi, Teunom , Bunta , Lumpat , and Batee lie just north of
16089-467: The coast and appeared like gigantic surfing waves but "taller than the coconut trees and was like a mountain". The second wave was the largest; it came from the west-southwest within five minutes of the first wave. The tsunami stranded cargo ships, barges and destroyed a cement mining facility near the Lampuuk coast, where it reached the fourth level of the building. Meulaboh , a remote coastal city,
16262-590: The coast of Aceh and proceeding north-westerly over about 100 seconds. After a pause of about another 100 seconds, the rupture continued northwards towards the Andaman and Nicobar Islands . The northern rupture occurred more slowly than in the south, at about 2.1 km/s (1.3 mi/s; 7,600 km/h; 4,700 mph), continuing north for another five minutes to a plate boundary where the fault type changes from subduction to strike-slip (the two plates slide past one another in opposite directions). The Indian plate
16435-516: The coastline, rising to 30 m (100 ft) in some areas when travelling inland. Radar satellites recorded the heights of tsunami waves in deep water: the maximum height was at 600 mm (2 ft) two hours after the earthquake, the first such observations ever made. According to Tad Murty , vice-president of the Tsunami Society, the total energy of the tsunami waves was equivalent to about 5 megatons of TNT (21 PJ ), which
16608-545: The colony's capital. During the colonial period, guerrillas of the royalist Cần Vương movement rebelled against French rule and massacred around a third of Vietnam's Christian population. After a decade of resistance, they were defeated in the 1890s by the Catholics in reprisal for their earlier massacres. Another large-scale rebellion, the Thái Nguyên uprising , was also suppressed heavily. The French developed
16781-436: The communists began to gain ground. To support South Vietnam's struggle against the communist insurgency, the United States used the 1964 Gulf of Tonkin incident as a pretext for increasing its contribution of military advisers. US forces became involved in ground combat operations by 1965, and at their peak several years later, numbered more than 500,000. The US also engaged in sustained aerial bombing . Meanwhile, China and
16954-454: The country consists mostly of highlands and the Red River Delta. Fansipan (also known as Phan Xi Păng), which is located in Lào Cai province , is the highest mountain in Vietnam, standing 3,143 m (10,312 ft) high. From north to south Vietnam, the country also has numerous islands ; Phú Quốc is the largest. The Hang Sơn Đoòng Cave is considered the largest known cave passage in
17127-596: The country's land area, and tropical forests cover around 42%. The Red River Delta in the north, a flat, roughly triangular region covering 15,000 km (5,792 sq mi), is smaller but more intensely developed and more densely populated than the Mekong River Delta in the south. Once an inlet of the Gulf of Tonkin , it has been filled in over the millennia by riverine alluvial deposits . The delta, covering about 40,000 km (15,444 sq mi),
17300-441: The country's land boundaries is 4,639 km (2,883 mi), and its coastline is 3,444 km (2,140 mi) long. At its narrowest point in the central Quảng Bình province , the country is as little as 50 kilometres (31 mi) across, though it widens to around 600 kilometres (370 mi) in the north. Vietnam's land is mostly hilly and densely forested, with level land covering no more than 20%. Mountains account for 40% of
17473-508: The damage caused, and the geological records of the areas where they occurred. Some examples of significant historical megathrust earthquakes are the 1868 Arica earthquake in Peru and the 1700 Cascadia earthquake in western North America. The 2004 Indian Ocean earthquake was unusually large in geographical and geological extent. An estimated 1,600 km (1,000 mi) of fault surface slipped (or ruptured) about 15 m (50 ft) along
17646-446: The direct attack by the islands to the south-west. Lhoknga is a small coastal community about 13 km (8.1 mi) south-west of Banda Aceh, located on a flat coastal plain in between two rainforest -covered hills, overlooking a large bay and famous for its large swathe of white sandy beach and surfing activities. The locals reported 10 to 12 waves, with the second and third being the highest and most destructive. Interviews with
17819-461: The direction of 145° east longitude , or perhaps by up to 50 or 60 mm (2.0 or 2.4 in). Because of tidal effects of the Moon, the length of a day increases at an average of 15 microseconds per year, so any rotational change due to the earthquake will be lost quickly. Similarly, the natural Chandler wobble of the Earth, which in some cases can be up to 15 m (50 ft), eventually offset
17992-463: The distances involved, the tsunami took anywhere from fifteen minutes to seven hours to reach the coastlines. The northern regions of the Indonesian island of Sumatra were hit quickly, while Sri Lanka and the east coast of India were hit roughly 90 minutes to two hours later. Thailand was struck about two hours later despite being closer to the epicentre because the tsunami travelled more slowly in
18165-484: The early Vietnamese kingdoms of Văn Lang and Âu Lạc appeared, and the culture's influence spread to other parts of Southeast Asia , including Maritime Southeast Asia , throughout the first millennium BC. According to Vietnamese legends, Hồng Bàng dynasty of the Hùng kings first established in 2879 BC is considered the first state in the history of Vietnam (then known as Xích Quỷ and later Văn Lang ). In 257 BC,
18338-412: The earthquake's effects were still detectable as a 20 μm (0.02 mm; 0.0008 in) complex harmonic oscillation of the Earth's surface, which gradually diminished and merged with the incessant free oscillation of the Earth more than four months after the earthquake. Because of its enormous energy release and shallow rupture depth, the earthquake generated remarkable seismic ground motions around
18511-496: The earthquake, its reverberations could still be measured, providing valuable scientific data about the Earth's interior. The 2004 Indian Ocean earthquake came just three days after a magnitude 8.1 earthquake in the sub-antarctic Auckland Islands , an uninhabited region west of New Zealand, and Macquarie Island to Australia's north. This is unusual since earthquakes of magnitude eight or more occur only about once per year on average. The U.S. Geological Survey sees no evidence of
18684-499: The earthquake. The tsunami first struck the eastern coastline and subsequently refracted around the southern point of Sri Lanka ( Dondra Head ). The refracted tsunami waves then inundated the southwestern part of Sri Lanka after some of its energy was reflected from impact with the Maldives. In Sri Lanka, the civilian casualties were second only to those in Indonesia, with approximately 35,000 killed. The eastern shores of Sri Lanka were
18857-522: The end of the war. It started by replanting mangrove forests in the Mekong Delta regions and in Cần Giờ outside Hồ Chí Minh City, where mangroves are important to ease (though not eliminate) flood conditions during monsoon seasons. The country had a 2019 Forest Landscape Integrity Index mean score of 5.35/10, ranking it 104th globally out of 172 countries. Apart from herbicide problems, arsenic in
19030-402: The far northern mountains near the Chinese border. Vietnam receives high rates of precipitation in the form of rainfall with an average amount from 1,500 to 2,000 mm (60 to 80 in) during the monsoon seasons; this often causes flooding, especially in the cities with poor drainage systems. The country is also affected by tropical depressions , tropical storms and typhoons . Vietnam
19203-590: The fifth regular session of the 15th Congress of the Federated States of Micronesia on October 29, 2008. According to a press release from the FSM Public Information Office, Congressional Resolution No. 15-145 was instituted to convey "profound gratitude and appreciation to the team of health services professionals and crew of USNS Mercy for humanitarian assistance and medical assistance to the people of Yap, Chuuk and Pohnpei during
19376-501: The first level of a hotel, causing destruction and taking people unaware. Other videos recorded showed that the tsunami appeared like a flood raging inland. The construction of seawalls and breakwaters reduced the power of waves at some locations. The largest run-up measured was at 12.5 m (41 ft) with inundation distance of 390–1,500 m (1,280–4,920 ft) in Yala . In Hambantota , run-ups measured 11 m (36 ft) with
19549-517: The globe, particularly due to huge Rayleigh (surface) elastic waves that exceeded 10 mm (0.4 in) in vertical amplitude everywhere on Earth. The record section plot displays vertical displacements of the Earth's surface recorded by seismometers from the IRIS/USGS Global Seismographic Network plotted with respect to time (since the earthquake initiation) on the horizontal axis, and vertical displacements of
19722-488: The greatest inundation distance of 2 km (1.2 mi). Run-up measurements along the Sri Lankan coasts are at 2.4–4.11 m (7 ft 10 in – 13 ft 6 in). Waves measured on the east coast ranged from 4.5–9 m (15–30 ft) at Pottuvill to Batticaloa at 2.6–5 m (8 ft 6 in – 16 ft 5 in) in the north-east around Trincomalee and 4–5 m (13–16 ft) in
19895-468: The greatest strength of the tsunami waves was in an east–west direction. Bangladesh , which lies at the northern end of the Bay of Bengal , had few casualties despite being a low-lying country relatively near the epicentre. It also benefited from the fact that the earthquake proceeded more slowly in the northern rupture zone, greatly reducing the energy of the water displacements in that region. Coasts that have
20068-461: The hardest hit since it faced the epicentre of the earthquake, while the southwestern shores were hit later, but the death toll was just as severe. The southwestern shores are a hotspot for tourists and fishing. The degradation of the natural environment in Sri Lanka contributed to the high death tolls. Approximately 90,000 buildings and many wooden houses were destroyed. The tsunami arrived on
20241-442: The island as a small brown-orange-coloured flood. Moments later, the ocean floor was exposed as much as 1 km (0.62 mi) in places, which was followed by massive second and third waves. Amateur video recorded at the city of Galle showed a large deluge flooding the city, carrying debris and sweeping away people while in the coastal resort town of Beruwala , the tsunami appeared as a huge brown-orange-coloured bore which reached
20414-578: The last Hùng king was defeated by Thục Phán. He consolidated the Lạc Việt and Âu Việt tribes to form the Âu Lạc , proclaiming himself An Dương Vương . In 179 BC, a Chinese general named Zhao Tuo ("Triệu Đà") defeated An Dương Vương and consolidated Âu Lạc into Nanyue . However, Nanyue was itself incorporated into the empire of the Chinese Han dynasty in 111 BC after the Han–Nanyue War . For
20587-575: The late Shang dynasty ( c. 1200 BC), and later as "越". At that time, it referred to a people or chieftain to the northwest of the Shang. In the early 8th century BC, a tribe on the middle Yangtze were called the Yangyue , a term later used for peoples further south. Between the 7th and 4th centuries BC, 'Yue'/'Việt' referred to the State of Yue in the lower Yangtze basin and its people. From
20760-416: The locals revealed that the sea temporarily receded and exposed coral reefs . In the distant horizon, gigantic black waves about 30 m (98 ft) high made explosion-like sounds as they broke and approached the shore. The first wave came rapidly landward from the south-west as a turbulent bore about 0.5–2.5 m (1.6–8.2 ft) high. The second and third waves were 15–30 m (49–98 ft) high at
20933-404: The longest fault rupture ever observed, between 1,200 km and 1,300 km (720 mi and 780 mi), and had the longest duration of faulting ever observed, at least ten minutes. It caused the planet to vibrate as much as 10 mm (0.4 in), and also remotely triggered earthquakes as far away as Alaska . Its epicentre was between Simeulue and mainland Sumatra. The plight of
21106-881: The longstanding tie between the U.S. and Micronesia with its humanitarian outreach. During the 10 days in Micronesia the mission was carried out with the NGO's and in close coordination and partnership with local medical care professionals. Volunteers from Project Hope and the University of California at San Diego Pre-dental Society worked closely with the U.S. and partner-nation medical personnel. Several countries were represented, including Canada, India, Australia and New Zealand. The UCSD Pre-dental Society provided dentists, dental students, pre-dental students (both from several universities) medical and pre-medical students and pharmacists and pharmacy students. Military personnel as well as
21279-421: The margins of the continental plates. Despite a delay of up to several hours between the earthquake and the impact of the tsunami, nearly all of the victims were taken by surprise. There were no tsunami warning systems in the Indian Ocean to detect tsunamis or to warn the general population living around the ocean. Tsunami detection is difficult because while a tsunami is in deep water, it has little height and
21452-474: The minor wobble produced by the earthquake. There was 10 m (33 ft) movement laterally and 4–5 m (13–16 ft) vertically along the fault line. Early speculation was that some of the smaller islands south-west of Sumatra, which is on the Burma plate (the southern regions are on the Sunda plate ), might have moved south-west by up to 36 m (120 ft), but more accurate data released more than
21625-674: The minutes preceding a tsunami strike, the sea sometimes recedes temporarily from the coast, which was observed on the eastern earthquake rupture zone such as the coastlines of Aceh, Phuket island, and Khao Lak area in Thailand, Penang island of Malaysia, and the Andaman and Nicobar islands . This rare sight reportedly induced people, especially children, to visit the coast to investigate and collect stranded fish on as much as 2.5 km (1.6 mi) of exposed beach, with fatal results. However, not all tsunamis cause this "disappearing sea" effect. In some cases, there are no warning signs at all:
21798-1123: The mission beginning on 15 May and concluding their final missions on 13 Aug 2020. The U.S. with the USS Pearl Harbor concentrated its efforts on Samoa, Tonga and the Marshall Islands. Australia with HMAS Tobruk went to Papua New Guinea, and New Zealand sent HMNZS Manawanui to Kiribati and HMNZS Canterbury to the Solomon Islands. Other participating nations included Canada, France, Japan, and Malaysia. Also included were non-governmental organizations including NOAA, Project Handclasp, Project HOPE, USAID, Vets Without Borders and World Vets. In Samoa mission personnel held more than 60 medical and dental engagements, provided veterinary services at 12 sites triaging and treated 2,633 patients, vets evaluated 430 animals and performed five engineering missions and four underwater harbor surveys surveying more than 500 underwater acres while in Samoa. In Tonga
21971-401: The mission staff treated 5,455 patients, evaluated 3,000 animals and conducted 25 donation events. 2004 Indian Ocean earthquake and tsunami On 26 December 2004, at 07:58:53 local time ( UTC+7 ), a major earthquake with a magnitude of 9.2–9.3 M w struck with an epicentre off the west coast of northern Sumatra , Indonesia. The undersea megathrust earthquake , known by
22144-469: The mountains of the Annamite Range , and extensive forests. Comprising five relatively flat plateaus of basalt soil, the highlands account for 16% of the country's arable land and 22% of its total forested land. The soil in much of the southern part of Vietnam is relatively low in nutrients as a result of intense cultivation. Several minor earthquakes have been recorded. The northern part of
22317-484: The name, Nanyue (or Nam Việt, 南越 ), was first documented in the 2nd century BC. The term " Việt " (Yue) ( Chinese : 越 ; pinyin : Yuè ; Cantonese Yale : Yuht ; Wade–Giles : Yüeh ; Vietnamese : Việt ) in Early Middle Chinese was first written using the logograph "戉" for an axe (a homophone), in oracle bone and bronze inscriptions of
22490-694: The nations. The deployment is typically based around an amphibious warfare vessel or hospital ship of the USN's Pacific Fleet. Other nations regularly contribute to the deployment; the Australian Defence Force has provided assets since the first deployment in 2006, and seven nations, along with other branches of the United States Armed Forces , US government agencies, and non-government organizations, were involved in Pacific Partnership 2011. Following Operation Unified Assurance,
22663-542: The next thousand years, what is now northern Vietnam remained mostly under Chinese rule . Early independence movements, such as those of the Trưng Sisters and Lady Triệu , were temporarily successful, though the region gained a longer period of independence as Vạn Xuân under the Anterior Lý dynasty between AD 544 and 602. By the early 10th century, Northern Vietnam had gained autonomy, but not sovereignty, under
22836-465: The north, and Laos and Cambodia to the west. It shares maritime borders with Thailand through the Gulf of Thailand , and the Philippines , Indonesia , and Malaysia through the South China Sea . Its capital is Hanoi and its largest city is Ho Chi Minh City (commonly known as Saigon). Vietnam was inhabited by the Paleolithic age, with states established in the first millennium BC on
23009-464: The parameters of the source earthquake without having to compensate for the complex ways in which proximity to the coast changes the size and shape of a wave. Before the 2004 quake there were three arguments against a large earthquake occurring in the Sumatra region. After the quake it was considered that earthquake hazard risk would need to be reassessed for regions previously thought to have low risk based on these criteria: The sudden vertical rise of
23182-682: The party's new general secretary. He and the reformers implemented a series of free-market reforms known as Đổi Mới ("Renovation") that carefully managed the transition from a planned economy to a " socialist-oriented market economy ". Although the authority of the state remained unchallenged under Đổi Mới , the government encouraged private ownership of farms and factories, economic deregulation, and foreign investment, while maintaining control over strategic industries. Subsequently, Vietnam's economy achieved strong growth in agricultural and industrial production, construction, exports, and foreign investment, although these reforms also resulted in
23355-453: The physical rehabilitation of victims of the chemicals. In 2018, the Japanese engineering group Shimizu Corporation , working with Vietnamese military, built a plant for the treatment of soil polluted by Agent Orange. Plant construction costs were funded by the company itself. One of the long-term plans to restore southern Vietnam's damaged ecosystems is through the use of reforestation efforts. The Vietnamese government began doing this at
23528-428: The preservation of biodiversity in 2004 alone and has established 126 conservation areas, including 30 national parks . In Vietnam, wildlife poaching has become a major concern. In 2000, a non-governmental organisation (NGO) called Education for Nature – Vietnam was founded to instill in the population the importance of wildlife conservation in the country. In the years that followed, another NGO called GreenViet
23701-571: The pro- Vichy French colonial administration continued. Japan exploited Vietnam's natural resources to support its military campaigns, culminating in a full-scale takeover of the country in March 1945. This led to the Vietnamese Famine of 1945 which killed up to two million people. In 1941, the Việt Minh , a nationalist liberation movement based on a communist ideology , emerged under
23874-478: The process by November 1957. The pro-Hanoi Việt Cộng began a guerrilla campaign in South Vietnam in the late 1950s to overthrow Diệm's government. From 1960, the Soviet Union and North Vietnam signed treaties providing for further Soviet military support. In 1963, Buddhist discontent with Diệm's Catholic regime erupted into mass demonstrations , leading to a violent government crackdown. This led to
24047-515: The profitable Macau–Japan trade route, the Portuguese began to involve themselves in trade with Hội An . Portuguese traders and Jesuit missionaries under the Padroado system were active in both Vietnamese realms of Đàng Trong ( Cochinchina or Quinan) and Đàng Ngoài ( Tonkin ) in the 17th century. The Dutch also tried to establish contact with Quinan in 1601 but failed to sustain
24220-785: The province of Phước Long and started a full-scale offensive , culminating in the fall of Saigon on 30 April 1975. South Vietnam was ruled by a provisional government for almost eight years while under North Vietnamese military occupation. On 2 July 1976, North and South Vietnam were merged to form the Socialist Republic of Vietnam. The war had devastated Vietnam and killed 966,000 to 3.8 million people. A 1974 US Senate subcommittee estimated nearly 1.4 million Vietnamese civilians were killed or wounded between 1965 and 1974—including 415,000 killed. In its aftermath, under Lê Duẩn 's administration, there were no mass executions of South Vietnamese who had collaborated with
24393-463: The region of the original epicentre in the hours and days that followed. The magnitude 8.6 2005 Nias–Simeulue earthquake , which originated off the coast of the Sumatran island of Nias , is not considered an aftershock, despite its proximity to the epicentre, and was most likely triggered by stress changes associated with the 2004 event. The earthquake produced its own aftershocks (some registering
24566-413: The region's north and east coast were Pidie Regency , Samalanga , Panteraja , and Lhokseumawe . The high fatality rate in the area was mainly due to lack of preparation of the community towards a tsunami and limited knowledge and education among the population regarding the natural phenomenon. Helicopter surveys revealed entire settlements virtually destroyed, with destruction extending miles inland. Only
24739-646: The same year due to corruption charges against him. On 3 August 2024, Tô Lâm, who is also serving as the president, was elected by the Central Committee of the Communist Party of Vietnam as the general secretary following the death of Nguyễn Phú Trọng on 19 July 2024. On 21 October 2024, the National Assembly appointed army general Lương Cường as president, succeeding Tô Lâm. Vietnam is divided into 58 provinces (Vietnamese: Tỉnh , chữ Hán : 省 ). There are also five municipalities ( thành phố trực thuộc trung ương ), which are administratively on
24912-646: The scientific community as the Sumatra–Andaman earthquake , was caused by a rupture along the fault between the Burma plate and the Indian plate , and reached a Mercalli intensity of IX in some areas. A massive tsunami with waves up to 30 m (100 ft) high, known as the Boxing Day Tsunami after the Boxing Day holiday, or as the Asian Tsunami , devastated communities along
25085-470: The sea will suddenly swell without retreating, surprising many people and giving them little time to flee. One of the few coastal areas to evacuate ahead of the tsunami was on the Indonesian island of Simeulue , close to the epicentre. Island folklore recounted an earthquake and tsunami in 1907 , and the islanders fled to inland hills after the initial shaking and before the tsunami struck. These tales and oral folklore from previous generations may have helped
25258-502: The seabed around the earthquake zone, which varies in depth between 1,000 and 5,000 m (550 and 2,730 fathoms; 3,300 and 16,400 ft). The survey, conducted using a high-resolution, multi-beam sonar system, revealed that the earthquake had made a considerable impact on the topography of the seabed. 1,500-metre-high (5,000 ft) thrust ridges created by previous geologic activity along the fault had collapsed, generating landslides several kilometres wide. One such landslide consisted of
25431-485: The seabed by several metres during the earthquake displaced massive volumes of water, resulting in a tsunami that struck the coasts of the Indian Ocean. A tsunami that causes damage far away from its source is sometimes called a teletsunami and is much more likely to be produced by the vertical motion of the seabed than by horizontal motion. The tsunami, like all the others, behaved differently in deep water than in shallow water. In deep ocean water, tsunami waves form only
25604-411: The seabed, prompting locals to collect stranded fish and explore the area. Local eyewitnesses described three large waves, with the first wave rising gently to the foundation of the buildings, followed minutes later by a sudden withdrawal of the sea near the port of Ulèë Lheue . This was succeeded by the appearance of two large black-coloured steep waves which then travelled inland into the capital city as
25777-514: The seafloor to pop up in seconds. This quickly elevated the height and increased the speed of waves, destroying the nearby Indonesian town of Lhoknga . Indonesia lies between the Pacific Ring of Fire along the north-eastern islands adjacent to New Guinea , and the Alpide belt that runs along the south and west from Sumatra, Java , Bali , Flores to Timor . The 2002 Sumatra earthquake
25950-475: The shallow Andaman Sea off its western coast. The tsunami was noticed as far as Struisbaai in South Africa, about 8,500 km (5,300 mi) away, where a 1.5-metre-high (5 ft) tide surged on shore about 16 hours after the earthquake. It took a relatively long time to reach Struisbaai at the southernmost point of Africa, probably because of the broad continental shelf off South Africa and because
26123-422: The shoreline, houses, except for strongly-built reinforced concrete ones with brick walls, which seemed to have been partially damaged by the earthquake before the tsunami attack, were swept away or destroyed by the tsunami. The area toward the sea was wiped clean of nearly every structure, while closer to the river, dense construction in a commercial district showed the effects of severe flooding. The flow depth at
26296-830: The southern third of the country became the French colony of Cochinchina . By 1884, the entire country was under French rule, with the central and northern parts of Vietnam separated into the two protectorates of Annam and Tonkin . The three entities were formally integrated into the union of French Indochina in 1887. The French administration imposed significant political and cultural changes on Vietnamese society. A Western-style system of modern education introduced new humanist values. Most French settlers in Indochina were concentrated in Cochinchina, particularly in Saigon , and in Hanoi ,
26469-522: The surrounding areas of the Red River Delta, the temperatures are much lower between 15 and 33 °C (59 and 91 °F). Seasonal variations in the mountains, plateaus, and the northernmost areas are much more dramatic, with temperatures varying from 3 °C (37 °F) in December and January to 37 °C (99 °F) in July and August. During winter, snow occasionally falls over the highest peaks of
26642-430: The surrounding coasts of the Indian Ocean, killing an estimated 227,898 people in 14 countries in one of the deadliest natural disasters in recorded history . The direct results caused major disruptions to living conditions and commerce in coastal provinces of surrounded countries, including Aceh (Indonesia), Sri Lanka , Tamil Nadu (India) and Khao Lak (Thailand). Banda Aceh reported the largest number of deaths. It
26815-446: The survival of the inhabitants. On Maikhao Beach in north Phuket City , Thailand, a 10-year-old British tourist named Tilly Smith had studied tsunamis in geography at school and recognised the warning signs of the receding ocean and frothing bubbles. She and her parents warned others on the beach, which was evacuated safely. John Chroston , a biology teacher from Scotland, also recognised the signs at Kamala Bay north of Phuket, taking
26988-609: The top of the train. Vietnam in ASEAN (dark grey) Vietnam , officially the Socialist Republic of Vietnam , is a country at the eastern edge of mainland Southeast Asia , with an area of about 331,000 square kilometres (128,000 sq mi) and a population of over 100 million, making it the world's fifteenth-most populous country . One of the two Marxist–Leninist states in Southeast Asia, Vietnam shares land borders with China to
27161-431: The tsunami as it was crossing the ocean. These satellites carry radars that measure precisely the height of the water surface; anomalies in the order of 500 mm (20 in) were measured. Measurements from these satellites may prove invaluable for the understanding of the earthquake and tsunami. Unlike data from tide gauges installed on shores, measurements obtained in the middle of the ocean can be used for computing
27334-510: The tsunami would have followed the South African coast from east to west. The tsunami also reached Antarctica, where tidal gauges at Japan's Showa Base recorded oscillations of up to a metre (3 ft 3 in), with disturbances lasting a couple of days. Some of the tsunami's energy escaped into the Pacific Ocean, where it produced small but measurable tsunamis along the western coasts of North and South America, typically around 200 to 400 mm (7.9 to 15.7 in). At Manzanillo , Mexico,
27507-425: The victims of UXOs. Vietnam is a unitary Marxist-Leninist one-party socialist republic , one of the two communist states (the other being Laos ) in Southeast Asia . Although Vietnam remains officially committed to socialism as its defining creed, its economic policies have grown increasingly capitalist , with The Economist characterising its leadership as "ardently capitalist communists". Under
27680-469: The visit to the FSM." The August 22 to September 1 visit was the fifth and final stop on Mercy ' s Pacific Partnership 2008 deployment which ran from May through September. During the FSM visit, Mercy and other Pacific Partnership personnel treated 3,000 dental patients, 15,000 medical patients and performed more than 200 surgeries. Pacific Partnership returned to USNS Mercy in 2010, visiting Vietnam , Cambodia , Indonesia , and Timor-Leste . Mercy
27853-530: The war. During the offensive, communist troops massacred over 3,000 civilians at Huế . Facing an increasing casualty count, rising domestic opposition to the war, and growing international condemnation, the US began withdrawing from ground combat roles in the early 1970s. This also entailed an unsuccessful effort to strengthen and stabilise South Vietnam . Following the Paris Peace Accords of 27 January 1973, all American combat troops were withdrawn by 29 March 1973. In December 1974, North Vietnam captured
28026-518: The west coast from Moratuwa to Ambalangoda . Sri Lanka tsunami height survey: A regular passenger train operating between Maradana and Matara was derailed and overturned by the tsunami and claimed at least 1,700 lives, the largest single rail disaster death toll in history. Estimates based on the state of the shoreline and a high-water mark on a nearby building place the tsunami 7.5–9 m (25–30 ft) above sea level and 2–3 m (6 ft 7 in – 9 ft 10 in) higher than
28199-411: The world since its discovery in 2009. The Ba Bể Lake and Mekong River are the largest lake and longest river in the country. Due to differences in latitude and the marked variety in topographical relief , Vietnam's climate tends to vary considerably for each region. During the winter or dry season, extending roughly from November to April, the monsoon winds usually blow from the northeast along
28372-587: The world's species. 15,986 species of flora have been identified in the country, of which 10% are endemic . Vietnam's fauna includes 307 nematode species, 200 oligochaeta , 145 acarina , 113 springtails , 7,750 insects, 260 reptiles, and 120 amphibians. There are 840 birds and 310 mammals are found in Vietnam, of which 100 birds and 78 mammals are endemic. Vietnam has two World Natural Heritage Sites —the Hạ Long Bay and Phong Nha-Kẻ Bàng National Park —together with nine biosphere reserves , including Cần Giờ Mangrove Forest , Cát Tiên , Cát Bà , Kiên Giang ,
28545-471: Was among the hardest hit by the tsunami. The waves arrived after the sea receded about 500 m (1,600 ft), followed by an advancing small tsunami. The second and third destructive waves arrived later, which exceeded the height of the coconut trees. The inundation distance is about 5 km (3.1 mi). Other towns on Aceh's west coast hit by the disaster included Leupung , Lhokruet , Lamno , Patek, Calang , and Teunom . Affected or destroyed towns on
28718-418: Was caused by the 1883 eruption of Krakatoa . Not every earthquake produces large tsunamis: on 28 March 2005, a magnitude 8.7 earthquake hit roughly the same area of the Indian Ocean but did not result in a major tsunami. The first warning sign of a possible tsunami is the earthquake itself. However, tsunamis can strike thousands of kilometres away where the earthquake is felt only weakly or not at all. Also, in
28891-638: Was due to the 2004 Indian Ocean earthquake. This quake, together with the Great Alaskan earthquake (1964) and the Great Chilean earthquake (1960), account for almost half of the total moment. Since 1900, the only earthquakes recorded with a greater magnitude were the 1960 Valdivia earthquake (magnitude 9.5) and the 1964 Alaska earthquake in Prince William Sound (magnitude 9.2). The only other recorded earthquakes of magnitude 9.0 or greater were off Kamchatka , Russia, on 5 November 1952 (magnitude 9.0) and Tōhoku, Japan (magnitude 9.1) in March 2011 . Each of these megathrust earthquakes also spawned tsunamis in
29064-446: Was effectively divided into two domains of Đàng Trong and Đàng Ngoài . The Nguyễn —the last imperial dynasty—surrendered to France in 1883. In 1887, its territory was integrated into French Indochina as three separate regions. In the immediate aftermath of World War II , the nationalist coalition Viet Minh , led by the communist revolutionary Ho Chi Minh , launched the August Revolution and declared Vietnam's independence from
29237-420: Was extreme on the northwestern areas of the city, immediately inland of the aquaculture ponds, and directly facing the Indian Ocean. The tsunami height was reduced from 12 m (39 ft) at Ulee Lheue to 6 m (20 ft) a further 8 km (5.0 mi) to the north-east. The inundation was observed to extend 3–4 km (1.9–2.5 mi) inland throughout the city. Within 2–3 km (1.2–1.9 mi) of
29410-466: Was formed by Vietnamese youngsters for the enforcement of wildlife protection. Through collaboration between the NGOs and local authorities, many local poaching syndicates were crippled by their leaders' arrests. A study released in 2018 revealed Vietnam is a destination for the illegal export of rhinoceros horns from South Africa due to the demand for them as a medicine and a status symbol. The main environmental concern that persists in Vietnam today
29583-411: Was responsible for governing Vietnam. President Võ Văn Thưởng , Prime Minister Phạm Minh Chính (since 2021) and the most powerful leader Nguyễn Phú Trọng (since 2011) as the Communist Party of Vietnam's General Secretary. On 22 May 2024, Tô Lâm , who previously served as the Minister of Public Security , was voted as the president of Vietnam by the National Assembly after Võ Văn Thưởng resigned on
29756-412: Was supported at different times by ships from Japan, Indonesia, Singapore, and Australia. In addition to Mercy ' s operations, two separate deployments were made under Pacific Partnership 2010: the command ship USS Blue Ridge to Palau , and the heavy lift ship HMAS Tobruk to Papua New Guinea . The 2011 deployment, which started on 21 March and ended on 4 August, was centered on
29929-838: Was usually called Annam until 1945, when the imperial government in Huế adopted Việt Nam . Archaeological excavations have revealed the existence of humans in what is now Vietnam as early as the Paleolithic age. Stone artefacts excavated in Gia Lai province have been claimed to date to 780,000 years ago, based on associated find of tektites , however this claim has been challenged because tektites are often found in archaeological sites of various ages in Vietnam. Homo erectus fossils dating to around 500,000 BC have been found in caves in Lạng Sơn and Nghệ An provinces in northern Vietnam. The oldest Homo sapiens fossils from mainland Southeast Asia are of Middle Pleistocene provenance, and include isolated tooth fragments from Tham Om and Hang Hum. Teeth attributed to Homo sapiens from
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