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87-562: The Arabian Sea's surface area is about 3,862,000 km (1,491,130 sq mi). The maximum width of the sea is approximately 2,400 km (1,490 mi), and its maximum depth is 5,395 metres (17,700 ft). The biggest river flowing into the sea is the Indus River . The Arabian Sea has two important branches: the Gulf of Aden in the southwest, connecting with the Red Sea through

174-590: A few introduced species . As the altitude further declines the Indus basin becomes overall quite slow-flowing as it passes through the Punjab Plain . Major carp become common, and chameleonfish ( Badis ), mullet ( Sicamugil ) and swamp eel ( Monopterus ) appear. In some upland lakes and tributaries of the Punjab region snow trout and mahseer are still common, but once the Indus basin reaches its lower plain

261-552: A greater volume of water than the Indus itself before that point. An alternative reckoning begins the river around 300 km further upstream, at the confluence of the Sênggê Zangbo and Gar Tsangpo rivers, which drain the Nganglong Kangri and Gangdise Shan (Gang Rinpoche, Mt. Kailash) mountain ranges. The 2011 remeasurement suggested the source was a small lake northeast of Mount Kailash, rather than either of

348-565: A major role in earlier cultures of the region, including the ancient Indus Valley Civilisation where depictions of fish were frequent. The Indus script has a commonly used fish sign, which in its various forms may simply have meant "fish", or referred to stars or gods. In the uppermost, highest part of the Indus River basin there are relatively few genera and species: Diptychus , Ptychobarbus , Schizopyge , Schizopygopsis and Schizothorax snowtrout, Triplophysa loaches, and

435-643: A mountain spring and fed with glaciers and rivers in the Himalayan , Karakoram , and Hindu Kush ranges, the river supports the ecosystems of temperate forests , plains, and arid countryside. The northern part of the Indus Valley, with its tributaries, forms the Punjab region of South Asia, while the lower course of the river ends in a large delta in the southern Sindh province of Pakistan. The river has historically been important to many cultures of

522-597: A publication now in the public domain :  Chisholm, Hugh , ed. (1911). " Arabian Sea ". Encyclopædia Britannica (11th ed.). Cambridge University Press. Indus River This is an accepted version of this page The Indus ( / ˈ ɪ n d ə s / IN -dəs ) is a transboundary river of Asia and a trans- Himalayan river of South and Central Asia . The 3,180 km (1,980 mi) river rises in mountain springs northeast of Mount Kailash in Western Tibet , flows northwest through

609-677: A seminal work in cosmography. He is also the author of the geographical dictionary Āthār al-bilād wa-akhbār al-ʿibād (lit. 'Monuments of the Lands and Historical Traditions about Their Peoples'). Born in Qazvin , of either Persian or Arab ancestry, al-Qazwini served as a legal expert and judge in several localities in Iran. He traveled around in Mesopotamia and the Levant , and finally entered

696-566: Is "sindhu". In Sanskrit, its range of meanings includes: stream, river; Indus; flood; sea or ocean; region or country in the vicinity of the Indus, Sindh, people of Sindh." The modern name in Urdu is Sindh ( Urdu : سندھ ) or Daryā-i-Sindh ( Urdu : دریائے سندھ , lit.   'The River Sindh'), contrasting to the Province of Sindh ( Urdu : صوبہِ سندھ , romanized :  Sūba-i-sindh ). The Ladakhis and Tibetans call

783-610: Is a union territory and is governed by the Union Government of India . The islands form the smallest union territory of India with their total surface area being just 32 km (12 sq mi). Next to these islands are the Maldives islands. These islands are all part of the Lakshadweep-Maldives-Chagos group of islands. Zalzala Koh was an island which was around for only a few years. After

870-502: Is a fertile region and often called the "breadbasket" of the country; the damage and toll of the floods on the local agrarian economy was said to be extensive. At least 1.7 million acres (690,000 ha; 2,700 sq mi) of arable land were inundated. The flooding followed the previous year's floods, which devastated a large part of the country. Unprecedented torrential monsoon rains caused severe flooding in 16 districts of Sindh. In Pakistan currently there are six barrages on

957-401: Is derived from the Indus River. In ancient times, "India" initially referred to those regions immediately along the east bank of the Indus, where are Punjab and Sindh now but by 300 BC, Greek writers including Herodotus and Megasthenes were applying the term to the entire subcontinent that extends much farther eastward. The lower basin of the Indus forms a natural boundary between

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1044-683: Is especially critical since rainfall is meagre in the lower Indus valley. Irrigation canals were first built by the people of the Indus Valley civilisation , and later by the engineers of the Kushan Empire and the Mughal Empire . Modern irrigation was introduced by the British East India Company in 1850 – the construction of modern canals accompanied with the restoration of old canals. The British supervised

1131-408: Is prone to moderate to severe flooding. In July 2010, following abnormally heavy monsoon rains, the Indus River rose above its banks and started flooding. The rain continued for the next two months, devastating large areas of Pakistan. In Sindh , the Indus burst its banks near Sukkur on 8 August, submerging the village of Mor Khan Jatoi. In early August, the heaviest flooding moved southward along

1218-458: Is protected from river flooding by constructing around 600 km long levees . The right bank side is also leveed from Guddu barrage to Lake Manchar . In response to the levees construction, the river has been aggrading rapidly over the last 20 years leading to breaches upstream of barrages and inundation of large areas. Tarbela Dam in Pakistan is constructed on the Indus River, while

1305-451: Is the "largest contiguous irrigation system developed over the past 140 years" anywhere in the world. This has reduced the flow of water and by 2018, the average annual flow of water below the Kotri barrage was 33 billion cubic metres (43 × 10 ^  cu yd), and annual amount of silt discharged was estimated at 100 million tonnes (98 × 10 ^ long tons). As a result,

1392-542: The 1819 Rann of Kutch earthquake . The Induan Age at the start of the Triassic Period of geological time is named for the Indus region. Accounts of the Indus valley from the times of Alexander's campaign indicate a healthy forest cover in the region. The Mughal Emperor Babur writes of encountering rhinoceroses along its bank in his memoirs (the Baburnama ). Extensive deforestation and human interference in

1479-433: The 2010 Pakistan floods were considered "good news" for the ecosystem and population of the river delta as they brought much-needed fresh water. Any further utilization of the river basin water is not economically feasible. Vegetation and wildlife of the Indus delta are threatened by the reduced inflow of fresh water, along with extensive deforestation, industrial pollution and global warming . Damming has also isolated

1566-750: The Horn of Africa and 380 km (240 mi) south of the Arabian Peninsula. Masirah and the five Khuriya Muriya Islands are islands off the southeastern coast of Oman. There are many major cities and towns in the coast of Arabian Sea. Some of the major cities are Mumbai , Muscat , Karachi , Aden , Salalah , Thiruvananthapuram , Kochi , Kozhikode , Alappuzha , Kollam , Mangalore , Bhavnagar , Jamnagar , Mogadishu , Gwadar , Abu Dhabi , Mundra , Dubai , Kannur , Panaji , Karwar , Udupi , Ratnagiri , Murdeshwar , Veraval , Colombo , Takamaka , and Dhiffushi . The Arabian Sea has one of

1653-761: The Iranian Plateau and the Indian subcontinent ; this region embraces all or parts of the Pakistani provinces Balochistan , Khyber Pakhtunkhwa , Punjab and Sindh and the countries Afghanistan and India. The first West Eurasian empire to annex the Indus Valley was the Persian Empire , during the reign of Darius the Great . During his reign, the Greek explorer Scylax of Caryanda was commissioned to explore

1740-671: The Jhelum River to Ropar on the upper Sutlej. The coastal settlements extended from Sutkagan Dor at the Pakistan- Iran border to Kutch in modern Gujarat , India. There is an Indus site on the Amu Darya at Shortughai in northern Afghanistan, and the Indus site Alamgirpur at the Hindon River is located only 28 km (17 mi) from Delhi. As of now, over 1,052 cities and settlements have been found, mainly in

1827-691: The Nanga Parbat massif . It flows swiftly across Hazara and is dammed at the Tarbela Reservoir . The Kabul River joins it near Attock . The remainder of its route to the sea is in the plains of the Punjab and Sindh, where the flow of the river becomes slow and highly braided. It is joined by the Panjnad at Mithankot . Beyond this confluence, the river, at one time, was named the Satnad River ( sat = "seven", nadī = "river"), as

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1914-732: The Port of Karachi , Port Qasim , and the Gwadar Port in Pakistan, Chabahar Port in Iran and the Port of Salalah in Salalah , Oman . The largest islands in the Arabian Sea include Socotra ( Yemen ), Masirah Island (Oman), Lakshadweep (India) and Astola Island (Pakistan). The countries with coastlines on the Arabian Sea are Yemen, Oman, Pakistan, Iran, India and the Maldives . The International Hydrographic Organization defines

2001-551: The Taunsa Barrage near Dera Ghazi Khan which also produces 100,000 kilowatts of electricity. The Kotri Barrage near Hyderabad is 915 metres (3,000 ft) long and provides additional water supplies for Karachi. The extensive linking of tributaries with the Indus has helped spread water resources to the valley of Peshawar , in the Khyber Pakhtunkhwa . The extensive irrigation and dam projects provide

2088-717: The 15th century Portuguese explorer Pero de Covilhăo , reaches depths of 4,400 metres (14,436 ft) and separates the Indus Fan region from the Oman Abyssal Plain, which eventually leads to the Gulf of Oman . The southern limits are dominated by the Arabian Basin , a deep basin reaching depths over 4,200 metres (13,780 ft). The northern sections of the Carlsberg Ridge flank the southern edge of

2175-487: The 1909 The Imperial Gazetteer of India gave it as "just over 1,800 miles". A shorter figure of 2,880 km (1,790 mi) has been widely used in modern sources, as has the one of 3,180 km (1,980 mi). The modern Encyclopedia Britannica was originally published in 1999 with the shorter measurement, but was updated in 2015 to use the longer measurement. Both lengths are commonly found in modern publications; in some cases, both measurements can be found within

2262-575: The 2013 earthquake in Pakistan, the mud island was formed. By 2016 the island had completely submerged. Astola Island, also known as Jezira Haft Talar in Balochi , or 'Island of the Seven Hills', is a small, uninhabited island in the northern tip of the Arabian Sea in Pakistan's territorial waters. Socotra, also spelled Soqotra , is the largest island, being part of a small archipelago of four islands. It lies some 240 km (150 mi) east of

2349-734: The 50 largest rivers in the world in terms of average annual flow . Its left-bank tributary in Ladakh is the Zanskar River , and its left-bank tributary in the plains is the Panjnad River which is formed by the successive confluences of the five Punjab rivers, namely the Chenab , Jhelum , Ravi , Beas , and Sutlej rivers. Its principal right-bank tributaries are the Shyok , Gilgit , Kabul , Kurram , and Gomal rivers. Beginning in

2436-795: The Akhdar (Green) Sea, Bahre Fars (Persian Sea), the Ocean Sea, the Hindu sea, the Makran Sea, the sea of Oman; among them Zakariya al-Qazwini , Al-Masudi , Ibn Hawqal and Hafiz-i Abru . They wrote: "The green sea and Indian sea and Persian sea are all one sea and in this sea there are strange creatures." in Iran and Turkey people call it Oman sea. In the Periplus of the Erythraean Sea , as well as in some ancient maps, Erythraean Sea refers to

2523-647: The Arabian Basin, which include a 5,358 metres (17,579 ft) deep point off the northern limit of Calrsberg Ridge. Prominent sea mounts off the Indian west coast include Raman Seamount named after C. V. Raman , Panikkar Seamount, named after N. K. Panikkar , and the Wadia Guyot , named after D. N. Wadia . Sind'Bad Seamount, named after the fictional explorer Sinbad the Sailor , Zheng He Seamount, and

2610-472: The Arabian Basin. The deepest parts of the Arabian Sea are in the Alula-Fartak Trough on the western edge of the Arabian Sea off the Gulf of Aden. The trough, reaching depths over 5,360 metres (17,585 ft), traverses the Gulf of Aden and the Arabian Sea. The deepest known point is in the Arabian Sea limits at a depth of 5,395 metres (17,700 ft). Other significant deep points are part of

2697-517: The Arabian Sea is warming monotonously; it possibly is due to global warming. The intensification and northward shift of the summer monsoon low-level jet over the Arabian Sea from 1979 to 2015, led to increased upper ocean heat content due to enhanced downwelling and reduced southward heat transport. Regional endonyms for the Arabian sea in languages of the coastal regions surrounding it. [REDACTED]   This article incorporates text from

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2784-521: The Arabian Sea, with the most important ones being Lakshadweep Islands (India), Socotra (Yemen), Masirah (Oman) and Astola Island (Pakistan). The Lakshadweep Islands (formerly known as the Laccadive, Minicoy, and Aminidivi Islands) is a group of islands in the Laccadive Sea region of Arabian Sea, 200 to 440 km (120 to 270 mi) off the southwestern coast of India. The archipelago

2871-555: The Himalayas and entrenched itself while they were rising. The Indus River feeds the Indus submarine fan , which is the second largest sediment body on Earth. It consists of around 5 million cubic kilometres of material eroded from the mountains. Studies of the sediment in the modern river indicate that the Karakoram Mountains in northern Pakistan and India are the single most important source of material, with

2958-473: The Himalayas providing the next largest contribution, mostly via the large rivers of the Punjab (Jhelum, Ravi, Chenab, Beas and Sutlej). Analysis of sediments from the Arabian Sea has demonstrated that before five million years ago the Indus was not connected to these Punjab rivers which instead flowed east into the Ganga and were captured after that time. Earlier work showed that sand and silt from western Tibet

3045-527: The Indian subcontinent, which increase winds blowing towards India, bringing up nutrients and reducing oxygen in the Arabian Sea's waters. In winter, phytoplankton suited to low-oxygen conditions turn the OMZ bright green. The wildlife of the Arabian sea is diverse, and entirely unique because of the geographic distribution. Recent studies by the Indian Institute of Tropical Meteorology confirmed that

3132-413: The Indus River "could very well precipitate World War III." Over the years factories on the banks of the Indus River have increased levels of water pollution in the river and the atmosphere around it. High levels of pollutants in the river have led to the deaths of endangered Indus river dolphin. The Sindh Environmental Protection Agency has ordered polluting factories around the river to shut down under

3219-701: The Indus River and its two tributaries the Jhelum River and the Chenab River independently of upstream control by India. The Indus Basin Project consisted primarily of the construction of two main dams, the Mangla Dam built on the Jhelum River and the Tarbela Dam constructed on the Indus River, together with their subsidiary dams. The Pakistan Water and Power Development Authority undertook

3306-552: The Indus River basin: the Eurasian otter in the northeastern highland sections and the smooth-coated otter elsewhere in the river basin. The smooth-coated otters in the Indus River represent a subspecies found nowhere else, the Sindh otter ( Lutrogale perspicillata sindica ). The Indus River basin has high diversity, being the home of more than 180 freshwater fish species, including 22 which are found nowhere else. Fish also played

3393-643: The Indus River from severely affected northern regions toward western Punjab , where at least 1,400,000 acres (570,000 ha) of cropland was destroyed, and the southern province of Sindh. As of September 2010 , over two thousand people had died and over a million homes had been destroyed since the flooding began. The 2011 Sindh floods began during the Pakistani monsoon season in mid-August 2011, resulting from heavy monsoon rains in Sindh, eastern Balochistan, and southern Punjab. The floods caused considerable damage; an estimated 434 civilians were killed, with 5.3 million people and 1,524,773 homes affected. Sindh

3480-587: The Indus River. It is a subspecies of the South Asian river dolphin . The Indus river dolphin formerly also occurred in the tributaries of the Indus river. According to the World Wildlife Fund it is one of the most threatened cetaceans with only about 1,816 still existing. It is threatened by habitat degradation from the construction of dams and canals, entanglement in fishing gear, and industrial water pollution. There are two otter species in

3567-481: The Indus river. Most scholars believe that settlements of Gandhara grave culture of the early Indo-Aryans flourished in Gandhara from 1700 BC to 600 BC, when Mohenjo-daro and Harappa had already been abandoned. The Rigveda describes several rivers , including one named "Sindhu". The Rigvedic "Sindhu" is thought to be the present-day Indus River. It is attested 176 times in its text, 94 times in

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3654-632: The Indus: Guddu Barrage , Sukkur Barrage , Kotri Barrage (also called Ghulam Muhammad barrage), Taunsa Barrage , Chashma Barrage and Jinnah Barrage . Another new barrage called " Sindh Barrage " is planned as a terminal barrage on the Indus River. There are some bridges on River Indus, such as Dadu Moro Bridge, Larkana Khairpur Indus River Bridge, Thatta-Sujawal bridge, Jhirk-Mula Katiar bridge and recently planned Kandhkot-Ghotki bridge. The entire left bank of Indus river in Sind province

3741-645: The Mount Error Guyot are some notable sea mounts in western Arabian Sea. Border and basin countries: The Arabian Sea historically and geographically has been referred to with different names by Arabian and European geographers and travelers, including Erythraean Sea , Indian Sea, Oman sea , Erythraean, Persian Sea in para No 34-35 of the Voyage. In Indian folklore, it is referred to as Darya, Sindhu Sagar, Arab Samudra. Arab geographers, sailors and nomads used to call this sea by different names, including

3828-605: The Pakistan Environmental Protection Act, 1997. Death of the Indus river dolphin has also been attributed to fishermen using poison to kill fish and scooping them up. As a result, the government banned fishing from Guddu Barrage to Sukkur . The Indus is second among a group of ten rivers responsible for about 90% of all the plastic that reaches the oceans. The Yangtze is the only river contributing more plastic. Frequently, Indus River

3915-405: The Rann of Kutch during its floods breaching flood banks . The major cities of the Indus Valley Civilisation , such as Harappa and Mohenjo-daro , date back to around 3300 BC, and represent some of the largest human habitations of the ancient world. The Indus Valley Civilisation extended from across northeast Afghanistan to Pakistan and northwest India , with an upward reach from east of

4002-502: The River Indus" from Achaemenian Old Persian "hindu," denoting an eastern province of the Achaemenid empire ( Persian language hind India), and Avestan hiṇdu , həṇdu "river," (natural) frontier; with same Proto Indo-Iranian language -root as Sanskrit sindhu (river), specifically the River Indus; hence also the region of the Indus, the province Sindh (which also developed into Hellenistic Greek Σίνθος ("the River Indus"). This river's traditional name in Sanskrit and Tibetan

4089-470: The Ror dynasty of Sauvīra . The Indus River came into the knowledge of the Western world early in the classical period , when King Darius of Persia sent his Greek subject Scylax of Caryanda to explore the river, c.  515 BC . Etymologically, English language word "Indus" comes from Late Latin Indus (1598), specifically a use of classical Latin Indus (inhabitant of India, Indian) from ancient Greek Ἰνδός "inhabitant of India, Indian,

4176-561: The basis for Pakistan's large production of crops such as cotton, sugarcane and wheat. The dams also generate electricity for heavy industries and urban centres. The Indus River is sacred to Hindus. The Sindhu Darshan Festival is held on every Guru Purnima on the banks of the Indus. The ethnicities of the Indus Valley (Pakistan and Northwest India) have a greater amount of ANI (or West Eurasian) admixture than other South Asians, including inputs from Western Steppe Herders , with evidence of more sustained and multi-layered migrations from

4263-1403: The catfish Glyptosternon reticulatum . Going downstream these are soon joined by the golden mahseer Tor putitora (alternatively T. macrolepis , although it often is regarded as a synonym of T. putitora ) and Schistura loaches. Downriver from around Thakot , Tarbela , the Kabul –Indus river confluence, Attock Khurd and Peshawar the diversity rises strongly, including many cyprinids ( Amblypharyngodon , Aspidoparia , Barilius , Chela , Cirrhinus , Crossocheilus , Cyprinion , Danio , Devario , Esomus , Garra , Labeo , Naziritor , Osteobrama , Pethia , Puntius , Rasbora , Salmophasia , Securicula and Systomus ), true loaches ( Botia and Lepidocephalus ), stone loaches ( Acanthocobitis and Nemacheilus ), ailiid catfish ( Clupisoma ), bagridae catfish ( Batasio , Mystus , Rita and Sperata ), airsac catfish ( Heteropneustes ), schilbid catfish ( Eutropiichthys ), silurid catfish ( Ompok and Wallago ), sisorid catfish ( Bagarius , Gagata , Glyptothorax and Sisor ), gouramis ( Trichogaster ), nandid leaffish ( Nandus ), snakeheads ( Channa ), spiny eel ( Macrognathus and Mastacembelus ), knifefish ( Notopterus ), glassfish ( Chanda and Parambassis ), clupeids ( Gudusia ), needlefish ( Xenentodon ) and gobies ( Glossogobius ), as well as

4350-426: The circle patronized by the Ilkhanid governor of Baghdad , Ata-Malik Juvayni (d. 1283 CE). It was to the latter that al-Qazwini dedicated his famous cosmography titled ʿAjāʾib al-makhlūqāt wa-gharāʾib al-mawjūdāt ( lit.   ' Wonders of the Creation and Unique [phenomena] of the Existence ' ). This treatise, frequently illustrated, was immensely popular and is preserved today in many copies. It

4437-399: The coast of the sea. It is located between the Karachi towns of Kiamari and Saddar . The Gwadar Port of Pakistan is a warm-water, deep-sea port situated at Gwadar in Balochistan at the apex of the Arabian Sea and at the entrance of the Persian Gulf, about 460 km west of Karachi and approximately 75 km (47 mi) east of Pakistan's border with Iran. The port is located on

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4524-422: The construction of one of the most complex irrigation networks in the world. The Guddu Barrage is 1,350 m (4,430 ft) long – irrigating Sukkur , Jacobabad , Larkana and Kalat . The Sukkur Barrage serves over 20,000 km (7,700 sq mi). After Pakistan came into existence, a water control treaty signed between India and Pakistan in 1960 guaranteed that Pakistan would receive water from

4611-457: The construction of the Chashma-Jhelum link canal – linking the waters of the Indus and Jhelum rivers – extending water supplies to the regions of Bahawalpur and Multan . Pakistan constructed the Tarbela Dam near Rawalpindi – standing 2,743 metres (9,000 ft) long and 143 metres (470 ft) high, with an 80-kilometre (50 mi) long reservoir. It supports the Chashma Barrage near Dera Ismail Khan for irrigation use and flood control and

4698-931: The controversial Kalabagh dam is also being constructed on Indus river. Pakistan is also building Munda Dam . Many Buddhist monasteries in Ladakh , Indus-Sarasvati Valley Civilisation sites along the banks of Indus and Sarasvati River ( Ghaggar-Hakra River ) and in Indus Sagar Doab , Indus River Delta , various dams such as Baglihar Dam , Sindhu Darshan Festival held every year at Leh , Sindhu Pushkaram festival held every 12 years at confluence of Indus and Zanskar River at Nimoo once every 12 years for 12 days starting from when Jupiter enter into Kumbha rasi (Aquarius), etc. are tourism opportunities. Zakariya al-Qazwini Zakariyya' al-Qazwini ( full name: Abū Yaḥyā Zakariyyāʾ ibn Muḥammad ibn Maḥmūd al-Qazwīnī , Arabic : أبو يحيى زكرياء بن محمد بن محمود القزويني ), also known as Qazvini ( Persian : قزوینی ), (born c.  1203 in Qazvin , Iran, and died 1283),

4785-405: The course of the Indus. It was crossed by the invading armies of Alexander . Still, after his Macedonians conquered the west bank—joining it to the Hellenic world, they elected to retreat along the southern course of the river, ending Alexander's Asian campaign. Alexander's admiral Nearchus set out from the Indus Delta to explore the Persian Gulf , until reaching the Tigris . The Indus Valley

4872-459: The delta population of Indus River dolphins from those further upstream. Large-scale diversion of the river's water for irrigation has raised far-reaching issues. Sediment clogging from poor maintenance of canals has affected agricultural production and vegetation on numerous occasions. Irrigation itself is increasing soil salinization, reducing crop yields and in some cases rendering farmland useless for cultivation. The Tibetan Plateau contains

4959-401: The disputed region of Kashmir , bends sharply to the left after the Nanga Parbat massif , and flows south-by-southwest through Pakistan , before emptying into the Arabian Sea near the port city of Karachi . The river has a total drainage area of circa 1,120,000 km (430,000 sq mi). Its estimated annual flow is around 175 km /a (5,500 m /s), making it one of

5046-442: The eastern bay of a natural hammerhead-shaped peninsula jutting out into the Arabian Sea from the coastline. Port of Salalah in Salalah, Oman is also a major port in the area. The International Task Force often uses the port as a base. There is a significant number of warships of all nations coming in and out of the port, which makes it a very safe bubble. The port handled just under 3.5m teu in 2009. There are several islands in

5133-399: The ecology of the Shivalik Hills has led to a marked deterioration in vegetation and growing conditions. The Indus valley regions are arid with poor vegetation. Agriculture is sustained largely due to irrigation works. The Indus river and its watershed have a rich biodiversity. It is home to around 25 amphibian species. The Indus river dolphin ( Platanista indicus minor ) is found only in

5220-418: The five rivers are Jhelum , Chenab , Ravi , Beas and Sutlej , all of which finally flow into the Indus. The Indus also supports many heavy industries and provides the main supply of potable water in Pakistan. The total length of the river varies in different sources. The length used in this article is 3,180 km (1,980 mi), taken from the Himalayan Climate and Water Atlas (2015). Historically,

5307-517: The flows of the Indus could be severely, severely affected by glacier melt as a consequence of climate change ," and reduced by perhaps as much as 50 per cent. "Now what does that mean to a population that lives in a desert [where], without the river, there would be no life? I don't know the answer to that question," he says. "But we need to be concerned about that. Deeply, deeply concerned." U.S. diplomat Richard Holbrooke said, shortly before he died in 2010, that he believed that falling water levels in

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5394-452: The former group is absent and the latter are rare. Many of the species of the middle sections of the Indus basin are also present in the lower. Notable examples of genera that are present in the lower plain but generally not elsewhere in the Indus River basin are the Aphanius pupfish, Aplocheilus killifish, palla fish ( Tenualosa ilisha ), catla ( Labeo catla ), rohu ( Labeo rohita ) and Cirrhinus mrigala . The lowermost part of

5481-421: The general region of the Ghaggar-Hakra River and its tributaries. Among the settlements were the major urban centres of Harappa and Mohenjo-daro, as well as Lothal , Dholavira , Ganeriwala , and Rakhigarhi . Only 40 Indus Valley sites have been discovered on the Indus and its tributaries. However, it is notable that majority of the Indus script seals and inscribed objects discovered were found at sites along

5568-415: The limits of the Arabian Sea as follows: The International Indian Ocean Expedition in 1959 was among the first to perform hydrographic surveys of the Arabian Sea. Significant bathymetric surveys were also conducted by the Soviet Union during the 1960s. Significant features in the northern Arabian Sea include the Indus Fan , the second largest fan system in the world. The De Covilhao Trough, named after

5655-398: The plural, and most often used in the generic sense of "river". In the Rigveda, notably in the later hymns, the meaning of the word is narrowed to refer to the Indus river in particular; for example, in the list of rivers mentioned in the hymn of Nadistuti sukta . The Rigvedic hymns apply a feminine gender to all the rivers mentioned therein, except for the Brahmaputra . The word "India"

5742-400: The region. The 3rd millennium BC saw the rise of Indus Valley Civilisation , a major urban civilization of the Bronze Age. During the 2nd millennium BC, the Punjab region was mentioned in the Rigveda hymns as Sapta Sindhu and in the Avesta religious texts as Hapta Həndu (both terms meaning " seven rivers "). Early historical kingdoms that arose in the Indus Valley include Gandhāra , and

5829-461: The river Senge Tsangpo (སེང་གེ་གཙང་པོ།), Baltis call it Gemtsuh and Tsuh-Fo , Pashtuns call it Nilab , Sher Darya and Abbasin , while Sindhis call it Sindhu , Mehran , Purali and Samundar . The Indus River provides key water resources for Pakistan's economy – especially the breadbasket of Punjab province , which accounts for most of the nation's agricultural production, and Sindh. The word Punjab means "land of five rivers" and

5916-412: The river and its delta are home to freshwater fish, but also several brackish and marine species. This includes pomfret and prawns . The large delta has been recognized by conservationists as an important ecological region. Here, the river turns into many marshes, streams and creeks and meets the sea at shallow levels. Palla fish ( Tenualosa ilisha ) of the river is a delicacy for people living along

6003-407: The river is also determined by the seasons – it diminishes greatly in the winter while flooding its banks in the monsoon months from July to September. There is also evidence of a steady shift in the course of the river since prehistoric times – it deviated westwards from flowing into the Rann of Kutch and adjoining Banni grasslands after the 1816 earthquake. As of 2011 , Indus water flows in to

6090-399: The river is the Sênggê Kanbab ( Sênggê Zangbo ) or "Lion's Mouth", a perennial spring not far from the sacred Mount Kailash , marked by a long low line of Tibetan chortens . There are several other tributaries nearby, which may form a longer stream than Sênggê Kanbab, but unlike the Sênggê Kanbab, are all dependent on snowmelt . The Zanskar River , which flows into the Indus in Ladakh, has

6177-411: The river now carried the waters of the Kabul River, the Indus River and the five Punjab rivers. Passing by Jamshoro , it ends in a large delta to the South of Thatta in the Sindh province of Pakistan. The Indus is one of the few rivers in the world to exhibit a tidal bore . The Indus system is largely fed by the snow and glaciers of the Himalayas , Karakoram and the Hindu Kush ranges. The flow of

6264-436: The river. The population of fish in the river is moderately high, with Sukkur , Thatta , and Kotri being the major fishing centres – all in the lower Sindh course. As a result, damming and irrigation have made fish farming an important economic activity. The Indus is the most important supplier of water resources to the Punjab and Sindh plains – it forms the backbone of agriculture and food production in Pakistan. The river

6351-603: The rough country in the southern Arabian Peninsula was significant, and the Egyptian Pharaohs built several shallow canals to service the trade, one more or less along the route of today's Suez Canal , and another from the Red Sea to the Nile River , both shallow works that were swallowed up by huge sand storms in antiquity. Later the kingdom of Axum arose in Ethiopia to rule a mercantile empire rooted in

6438-479: The same work. An extended figure of circa 3,600 km (2,200 mi) was announced by a Chinese research group in 2011, based on a comprehensive remeasurement from satellite imagery, and a ground expedition to identify an alternative source point, but detailed analysis has not yet been published. The ultimate source of the Indus is in Tibet , but there is some debate about the exact source. The traditional source of

6525-694: The sea around the rough inland terrain features to its north. These routes usually began in the Far East or down river from Madhya Pradesh , India with transshipment via historic Bharuch (Bharakuccha), traversed past the inhospitable coast of modern-day Iran, then split around Hadhramaut , Yemen into two streams north into the Gulf of Aden and thence into the Levant , or south into Alexandria via Red Sea ports such as Axum . Each major route involved transhipping to pack animal caravan , travel through desert country and risk of bandits and extortionate tolls by local potentates. This southern coastal route past

6612-676: The strait of Bab-el-Mandeb ; and the Gulf of Oman to the northwest, connecting with the Persian Gulf. There are also the gulfs of Khambhat and Kutch on the Indian Coast . The Arabian Sea has been crossed by many important marine trade routes since the 3rd or 2nd millennium BCE. Major seaports include Kandla Port , Mundra Port , Pipavav Port , Dahej Port , Hazira Port , Mumbai Port , Nhava Sheva Port (Navi Mumbai) , Mormugão Port (Goa) , New Mangalore Port and Kochi Port in India,

6699-561: The surface. In November 2011, satellite images showed that the Indus river had re-entered India and was feeding the Great Rann of Kutch , Little Rann of Kutch and a lake near Ahmedabad known as Nal Sarovar . Heavy rains had left the river basin along with the Lake Manchar , Lake Hemal and Kalri Lake (all in modern-day Pakistan) inundated. This happened two centuries after the Indus river shifted its course westwards following

6786-464: The trade with Europe via Alexandria. Jawaharlal Nehru Port in Mumbai is the largest port in the Arabian Sea, and the largest container port in India. Major Indian ports in the Arabian Sea are Mundra Port , Kandla Port , Nava Sheva , Kochi Port , Mumbai Port , Vizhinjam International Seaport Thiruvananthapuram and Mormugão . The Port of Karachi , Pakistan's largest and busiest seaport lies on

6873-530: The two points previously used. The Indus then flows northwest through Ladakh (Indian-administered Kashmir) and Baltistan and Gilgit (Pakistan-administered Kashmir), just south of the Karakoram range. The Shyok , Shigar and Gilgit rivers carry glacial waters into the main river. It gradually bends to the south and descends into the Punjab plains at Kalabagh , Pakistan. The Indus passes gigantic gorges 4,500–5,200 metres (15,000–17,000 ft) deep near

6960-480: The west. Originally, the delta used to receive almost all of the water from the Indus River, which has an annual flow of approximately 180 billion cubic metres (240 × 10 ^  cu yd), and is accompanied by 400 million tonnes (390 × 10 ^ long tons) of silt. Since the 1940s, dams, barrages and irrigation works have been constructed on the river. The Indus Basin Irrigation System

7047-500: The whole area of the northwestern Indian Ocean, including the Arabian Sea. The Arabian Sea has been an important marine trade route since the era of the coastal sailing vessels from possibly as early as the 3rd millennium BCE, certainly the late 2nd millennium BCE through the later days known as the Age of Sail . By the time of Julius Caesar , several well-established combined land-sea trade routes depended upon water transport through

7134-662: The world's third-largest store of ice. Qin Dahe, the former head of the China Meteorological Administration, said the recent fast pace of melting and warmer temperatures will be good for agriculture and tourism in the short term, but issued a strong warning: Temperatures are rising four times faster than elsewhere in China, and the Tibetan glaciers are retreating at a higher speed than in any other part of

7221-446: The world's three largest oceanic oxygen minimum zones (OMZ), or “dead zones,” along with the eastern tropical North Pacific and the eastern tropical South Pacific. OMZs have very low levels of oxygen , sometimes so low as to be undetectable by standard equipment. The Arabian Sea's OMZ has the lowest levels of oxygen in the world, especially in the Gulf of Oman. Causes of the OMZ may include untreated sewage as well as high temperatures on

7308-525: The world... In the short term, this will cause lakes to expand and bring floods and mudflows... In the long run, the glaciers are vital lifelines of the Indus River. Once they vanish, water supplies in Pakistan will be in peril. "There is insufficient data to say what will happen to the Indus," says David Grey, the World Bank's senior water advisor in South Asia. "But we all have very nasty fears that

7395-687: Was a cosmographer and geographer . He belonged to a family of jurists originally descended from Anas bin Malik (a companion of the Islamic prophet Muhammad) which had been well established in Qazvin long before al-Qazwini was born. His most famous work is the ʿAjāʾib al-makhlūqāt wa-gharāʾib al-mawjūdāt ( lit.   ' Wonders of the Creation and Unique [phenomena] of the Existence ' ),

7482-459: Was later dominated by the Mauryan and Kushan Empires , Indo-Greek Kingdoms , Indo-Scythians and Hepthalites . Over several centuries Muslim armies of Muhammad ibn al-Qasim , Mahmud of Ghazni , Muhammad of Ghor , Timur and Babur crossed the river to invade Sindh and Punjab , providing a gateway to the Indian subcontinent. Indus is an antecedent river , meaning that it existed before

7569-564: Was reaching the Arabian Sea by 45 million years ago, implying the existence of an ancient Indus River by that time. The delta of this proto-Indus river has subsequently been found in the Katawaz Basin , on the Afghan-Pakistan border . In the Nanga Parbat region, the massive amounts of erosion due to the Indus river following the capture and rerouting through that area are thought to bring middle and lower crustal rocks to

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