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91-821: Tripoli Campaign may refer to: Barbary Wars , in which the US, Sweden and Sicily fought against Tripoli, Algiers, Tunis and Morocco Italo-Turkish War#Opening maneuver , in which Italy captured Tripoli and the Tripolitania Villayet from the Ottoman Empire Fighting in and around Tripoli during the Second Libyan Civil War See also [ edit ] Siege of Tripoli (disambiguation) List of wars involving Libya List of wars involving Lebanon Topics referred to by

182-643: A U.S. Navy fleet to the Mediterranean to combat the Barbary pirates. The fleet bombarded numerous fortified cities in present-day Libya, Tunisia, and Algeria, ultimately extracting concessions of safe conduct from the Barbary states and ending the first war. During the War of 1812 , with the encouragement of the United Kingdom, the Barbary corsairs resumed their attacks on American vessels. Following

273-492: A World Heritage Site for their geological value, four of them are considered of "Outstanding Universal Value" based on their cultural and natural criteria: Þingvellir , Iceland; Landscape of the Pico Island Vineyard Culture , Portugal; Gough and Inaccessible Islands , United Kingdom; and Brazilian Atlantic Islands: Fernando de Noronha and Atol das Rocas Reserves, Brazil. Continental shelves in

364-506: A Navy Sonic Depth Finder to draw a continuous map across the bed of the Atlantic. This involved little guesswork because the idea of sonar is straightforward with pulses being sent from the vessel, which bounce off the ocean floor, then return to the vessel. The deep ocean floor is thought to be fairly flat with occasional deeps, abyssal plains , trenches , seamounts , basins , plateaus , canyons , and some guyots . Various shelves along

455-721: A branch of the Gulf Stream which flows northward from the Grand Banks ; and the Subpolar Front , an extension of the North Atlantic Current, a wide, vaguely defined region separating the subtropical gyre from the subpolar gyre. This system of currents transports warm water into the North Atlantic, without which temperatures in the North Atlantic and Europe would plunge dramatically. North of

546-582: A peace agreement in favor of America. The dey was forced to pay $ 10,000 in compensation and to renounce all that America had been paying him. When the United States military efforts of the early 19th century were successful against the pirates, partisans of the Democratic-Republicans contrasted their presidents' refusals to buy off the pirates by paying tribute with the failure of the preceding Federalist administration to suppress

637-619: A peace treaty with Algiers in 1785, the Algerian corsair captains entered the waters of the Atlantic and attacked American ships, refusing to release them except for large sums of money. Two American ships, the schooner Maria , and the Dauphin were captured by Algerian pirates in July 1785 and the survivors forced into slavery, their ransom set at $ 60,000. A rumor that Benjamin Franklin , who

728-614: A position of neutrality . Thus, the countries of Europe and the United States of America failed to ally against the countries of the Islamic Maghreb and Algiers in particular, and the matter so remained until the Napoleonic Wars ended in 1815. James Madison recommended that Congress declare the "existence of a state of war between the United States and the Dey and Regency of Algiers." While Congress did not formally declare

819-497: A state of war, they did pass legislation, enacted on March 3, 1815, that authorized the president to use the U.S. Navy, "as judged requisite by the President" to protect the "commerce and seamen" of the United States on the "Atlantic Ocean, the Mediterranean and adjoining seas." Congress also authorized the president to grant the U.S. Navy the ability to seize all vessels and goods belonging to Algiers. The legislation also authorized

910-416: A weak Intertropical Convergence Zone , South Atlantic tropical cyclones are rare. The Atlantic Ocean is underlain mostly by dense mafic oceanic crust made up of basalt and gabbro and overlain by fine clay, silt and siliceous ooze on the abyssal plain. The continental margins and continental shelf mark lower density, but greater thickness felsic continental rock that is often much older than that of

1001-621: Is a complex of four water masses, two that form by deep convection in the open ocean – classical and upper Labrador sea water – and two that form from the inflow of dense water across the Greenland-Iceland-Scotland sill – Denmark Strait and Iceland-Scotland overflow water. Along its path across Earth the composition of the NADW is affected by other water masses, especially Antarctic bottom water and Mediterranean overflow water. The NADW

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1092-604: Is a maxim of the Barbary States, that 'The Christians who would be on good terms with them must fight well or pay well.'" America paid to Algiers during the presidency of George Washington and his successor, John Adams (1797-1801), $ 1,000,000, or a fifth of the government's annual budget, in tribute. The First Barbary War (1801–1805), also known as the Tripolitian War or the Barbary Coast War,

1183-501: Is different from Wikidata All article disambiguation pages All disambiguation pages Barbary Wars The wars were largely a reaction to piracy by the Barbary states . Since the 16th century, North African pirates had captured ships and even raided European coastal areas across the Mediterranean Sea . Originally starting out with the goal of capturing individuals for the domestic North African slave trade,

1274-467: Is fed by a flow of warm shallow water into the northern North Atlantic which is responsible for the anomalous warm climate in Europe. Changes in the formation of NADW have been linked to global climate changes in the past. Since human-made substances were introduced into the environment, the path of the NADW can be traced throughout its course by measuring tritium and radiocarbon from nuclear weapon tests in

1365-498: Is found off the eastern coast of Canada. Surface water temperatures, which vary with latitude, current systems, and season and reflect the latitudinal distribution of solar energy, range from below −2 °C (28 °F) to over 30 °C (86 °F). Maximum temperatures occur north of the equator, and minimum values are found in the polar regions. In the middle latitudes, the area of maximum temperature variations, values may vary by 7–8 °C (13–14 °F). From October to June

1456-575: Is interrupted by larger transform faults at two places: the Romanche Trench near the Equator and the Gibbs fracture zone at 53°N . The MAR is a barrier for bottom water, but at these two transform faults deep water currents can pass from one side to the other. The MAR rises 2–3 km (1.2–1.9 mi) above the surrounding ocean floor and its rift valley is the divergent boundary between

1547-854: Is intersected by two perpendicular ridges: the Azores–Gibraltar Transform Fault , the boundary between the Nubian and Eurasian plates , intersects the MAR at the Azores triple junction , on either side of the Azores microplate, near the 40°N . A much vaguer, nameless boundary, between the North American and South American plates, intersects the MAR near or just north of the Fifteen-Twenty fracture zone , approximately at 16°N . In

1638-729: Is now northern and central Brazil. The formation of the Central American Isthmus closed the Central American Seaway at the end of the Pliocene 2.8 Ma ago. The formation of the isthmus resulted in the migration and extinction of many land-living animals, known as the Great American Interchange , but the closure of the seaway resulted in a "Great American Schism" as it affected ocean currents, salinity, and temperatures in both

1729-794: Is now the Carpathian region, that were similar to the Sargasso Sea. It is possible that the population in the Sargasso Sea migrated to the Atlantic as the Tethys closed at the end of the Miocene around 17 Ma. The origin of the Sargasso fauna and flora remained enigmatic for centuries. The fossils found in the Carpathians in the mid-20th century often called the "quasi-Sargasso assemblage", finally showed that this assemblage originated in

1820-520: The Age of Discovery , the Atlantic was also known to English cartographers as the Great Western Ocean . The pond is a term often used by British and American speakers in reference to the northern Atlantic Ocean, as a form of meiosis , or ironic understatement. It is used mostly when referring to events or circumstances "on this side of the pond" or "on the other side of the pond" or "across

1911-564: The Carpathian Basin from where it migrated over Sicily to the central Atlantic where it evolved into modern species of the Sargasso Sea. The location of the spawning ground for European eels remained unknown for decades . In the early 19th century it was discovered that the southern Sargasso Sea is the spawning ground for both the European and American eel and that the former migrate more than 5,000 km (3,100 mi) and

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2002-474: The Icelandic Low produces frequent storms. Icebergs are common from early February to the end of July across the shipping lanes near the Grand Banks of Newfoundland . The ice season is longer in the polar regions, but there is little shipping in those areas. Hurricanes are a hazard in the western parts of the North Atlantic during the summer and autumn. Due to a consistently strong wind shear and

2093-684: The North American and Eurasian plates in the North Atlantic and the South American and African plates in the South Atlantic. The MAR produces basaltic volcanoes in Eyjafjallajökull , Iceland, and pillow lava on the ocean floor. The depth of water at the apex of the ridge is less than 2,700 m (1,500 fathoms ; 8,900  ft ) in most places, while the bottom of the ridge is three times as deep. The MAR

2184-616: The North Atlantic Drift is thought to have at least some influence on climate. For example, the Gulf Stream helps moderate winter temperatures along the coastline of southeastern North America, keeping it warmer in winter along the coast than inland areas. The Gulf Stream also keeps extreme temperatures from occurring on the Florida Peninsula. In the higher latitudes, the North Atlantic Drift, warms

2275-514: The North Atlantic oscillation , occurs. On average, the Atlantic is the saltiest major ocean; surface water salinity in the open ocean ranges from 33 to 37 parts per thousand (3.3–3.7%) by mass and varies with latitude and season. Evaporation, precipitation, river inflow and sea ice melting influence surface salinity values. Although the lowest salinity values are just north of the equator (because of heavy tropical rainfall), in general,

2366-629: The Old World of Afro-Eurasia ( Africa , Asia , and Europe ). Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be

2457-555: The Scotia Sea , and other tributary water bodies. Including these marginal seas the coast line of the Atlantic measures 111,866 km (69,510 mi) compared to 135,663 km (84,297 mi) for the Pacific. Including its marginal seas, the Atlantic covers an area of 106,460,000 km (41,100,000 sq mi) or 23.5% of the global ocean and has a volume of 310,410,900 km (74,471,500 cu mi) or 23.3% of

2548-619: The Titan in Greek mythology , who supported the heavens and who later appeared as a frontispiece in medieval maps and also lent his name to modern atlases . On the other hand, to early Greek sailors and in ancient Greek mythological literature such as the Iliad and the Odyssey , this all-encompassing ocean was instead known as Oceanus , the gigantic river that encircled the world; in contrast to

2639-505: The dey followed on April 12, 1815 informing him of America's decision to enter into war against him and giving him the choice between peace and war after reminding him of the horrors of war and the advantages of peace and understanding. In the year 1816, Dey Omar answered this letter and offered America the renewal of the previous treaty concluded during the reign of Hassan Pasha (1791-1798). Madison answered him on August 21 and asked him to resume negotiations. These were renewed and ended with

2730-432: The dey pledged to work with Tunisia and Tripoli , to also sign this treaty, and peace would be achieved for America in the entire Mediterranean basin. On September 5, 1795, American negotiator Joseph Donaldson signed a peace treaty with the dey of Algiers, with 22 articles that included an upfront payment of $ 642,500 in specie ( silver coinage ) for peace, the release of American captives, expenses, and various gifts for

2821-544: The dey's royal court and family. America suffered another humiliation when it sent tribute carried by the large armed frigate " USS George Washington (1798) " to Algiers; Dey Mustapha Pasha forced US commodore William Bainbridge to hoist an Ottoman Algerian flag over his warship before sailing to Constantinople carrying tribute to the Ottoman sultan in 1800. As Lieutenant and consul William Eaton informed newly appointed Secretary of State John Marshall in 1800, "It

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2912-638: The meridional overturning circulation (MOC), the northward heat transport of which is threatened by anthropogenic climate change. Large variations in the subpolar gyre on a decade-century scale, associated with the North Atlantic oscillation , are especially pronounced in Labrador Sea Water , the upper layers of the MOC. The South Atlantic is dominated by the anti-cyclonic southern subtropical gyre. The South Atlantic Central Water originates in this gyre, while Antarctic Intermediate Water originates in

3003-458: The thermocline of the subtropical gyre. The Sargasso Sea in the western North Atlantic can be defined as the area where two species of Sargassum ( S. fluitans and natans ) float, an area 4,000 km (2,500 mi) wide and encircled by the Gulf Stream , North Atlantic Drift , and North Equatorial Current . This population of seaweed probably originated from Tertiary ancestors on

3094-578: The " Naval Act of 1794 " on the need to establish a defensive naval fleet, but stipulated in one of its articles that the project be stopped if an agreement was reached with Algiers. During the presidency of George Washington (April 30, 1789 – 1797), and after America failed to form an American-European alliance against the Maghreb countries, the U.S. announced its desire to establish friendly relations with Algiers in February 1792, and reported this to

3185-578: The 1870s, the Challenger expedition discovered parts of what is now known as the Mid-Atlantic Ridge, or: An elevated ridge rising to an average height of about 1,900 fathoms [3,500 m; 11,400 ft] below the surface traverses the basins of the North and South Atlantic in a meridianal direction from Cape Farewell, probably its far south at least as Gough Island, following roughly

3276-618: The 1953 definition it extends south to Antarctica, while in later maps it is bounded at the 60° parallel by the Southern Ocean. The Atlantic has irregular coasts indented by numerous bays, gulfs and seas. These include the Baltic Sea , Black Sea , Caribbean Sea , Davis Strait , Denmark Strait , part of the Drake Passage , Gulf of Mexico , Labrador Sea , Mediterranean Sea , North Sea , Norwegian Sea , almost all of

3367-485: The 1960s and CFCs . The clockwise warm-water North Atlantic Gyre occupies the northern Atlantic, and the counter-clockwise warm-water South Atlantic Gyre appears in the southern Atlantic. In the North Atlantic, surface circulation is dominated by three inter-connected currents: the Gulf Stream which flows north-east from the North American coast at Cape Hatteras ; the North Atlantic Current ,

3458-537: The Atlantic are wide off Newfoundland, southernmost South America, and northeastern Europe. In the western Atlantic carbonate platforms dominate large areas, for example, the Blake Plateau and Bermuda Rise . The Atlantic is surrounded by passive margins except at a few locations where active margins form deep trenches : the Puerto Rico Trench (8,376 m or 27,480 ft maximum depth) in

3549-625: The Atlantic include the Challenger expedition and the German Meteor expedition ; as of 2001 , Columbia University 's Lamont–Doherty Earth Observatory and the United States Navy Hydrographic Office conduct research on the ocean. The MAR divides the Atlantic longitudinally into two halves, in each of which a series of basins are delimited by secondary, transverse ridges. The MAR reaches above 2,000 m (6,600 ft) along most of its length, but

3640-403: The Atlantic north of the equator. The coldest zones are in high latitudes, with the coldest regions corresponding to the areas covered by sea ice. Ocean currents influence the climate by transporting warm and cold waters to other regions. The winds that are cooled or warmed when blowing over these currents influence adjacent land areas. The Gulf Stream and its northern extension towards Europe,

3731-469: The Atlantic sea ' , etym . ' Sea of Atlas ' ) and in The Histories of Herodotus around 450 BC (Hdt. 1.202.4): Atlantis thalassa (Ancient Greek: Ἀτλαντὶς θάλασσα , ' Sea of Atlas ' or ' the Atlantic sea ' ) where the name refers to "the sea beyond the pillars of Heracles " which is said to be part of the sea that surrounds all land. In these uses, the name refers to Atlas ,

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3822-633: The Bahamas, while coarse river outwash sands and silt are common in shallow shelf areas like the Georges Bank . Coarse sand, boulders, and rocks were transported into some areas, such as off the coast of Nova Scotia or the Gulf of Maine during the Pleistocene ice ages. The break-up of Pangaea began in the central Atlantic, between North America and Northwest Africa, where rift basins opened during

3913-462: The Barbary states after its independence was recognized between 1786 and 1794 to pay tribute in exchange for leaving American merchantmen alone, and by 1797, the United States had paid out $ 1.25 million or a fifth of the government's annual budget in tribute. These demands for tribute imposed a heavy financial drain and by 1799 the U.S. was in arrears of $ 140,000 to Algiers and some $ 150,000 to Tripoli. Many Americans resented these payments, arguing that

4004-547: The Dey Hassan III Pasha, like how Great Britain bought peace and security for its ships. When the American government began negotiating with Algiers, the Dey asked for $ 2,435,000 as the price for the peace contract and the ransom of the prisoners, then reduced the amount to $ 642,500 and $ 21,000 in military equipment that is presented to Algiers every year. Reconciliation took place between the two parties, and

4095-516: The European shores of the former Tethys Ocean and has, if so, maintained itself by vegetative growth , floating in the ocean for millions of years. Other species endemic to the Sargasso Sea include the sargassum fish , a predator with algae-like appendages which hovers motionless among the Sargassum . Fossils of similar fishes have been found in fossil bays of the former Tethys Ocean, in what

4186-405: The Late Triassic and Early Jurassic. This period also saw the first stages of the uplift of the Atlas Mountains. The exact timing is controversial with estimates ranging from 200 to 170 Ma. The opening of the Atlantic Ocean coincided with the initial break-up of the supercontinent Pangaea , both of which were initiated by the eruption of the Central Atlantic Magmatic Province (CAMP), one of

4277-404: The Mediterranean and along the coast. The Moroccan-American Treaty of Friendship stands as America's oldest unbroken friendship treaty with a foreign power. In 1787, Morocco became one of the first nations to recognize the United States. Starting in the 1780s, realizing that American vessels were no longer under the protection of the British navy , the Barbary pirates seized American ships in

4368-479: The Mediterranean. In 1785, the U.S. had disbanded its Continental Navy and therefore had no seagoing military force, its government agreed in 1786 to pay tribute to stop the attacks. On March 20, 1794, at the urging of President George Washington, Congress voted to authorize the building of six heavy frigates and establish the United States Navy , in order to stop these attacks and the demands for more and more money. The United States had signed treaties with all of

4459-468: The North Atlantic Gyre, the cyclonic North Atlantic Subpolar Gyre plays a key role in climate variability. It is governed by ocean currents from marginal seas and regional topography, rather than being steered by wind, both in the deep ocean and at sea level. The subpolar gyre forms an important part of the global thermohaline circulation . Its eastern portion includes eddying branches of the North Atlantic Current which transport warm, saline waters from

4550-409: The Roman Catholic Church. The British became familiar with captivity narratives written by Barbary pirates' prisoners and slaves. During the American Revolutionary War , the pirates attacked American ships. On December 20, 1777, Morocco's sultan Mohammed III declared that merchant ships of the new American nation would be under the protection of the sultanate and could thus enjoy safe passage into

4641-437: The South Atlantic, and the "Atmospheric Bridge", which evaporates subtropical Atlantic waters and exports it to the Pacific. The Atlantic Ocean consists of four major, upper water masses with distinct temperature and salinity. The Atlantic subarctic upper water in the northernmost North Atlantic is the source for subarctic intermediate water and North Atlantic intermediate water. North Atlantic central water can be divided into

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4732-404: The United States and Brazil , both increased in degree during the early 20th century, and while no major military conflicts have taken place in the Atlantic recently, the ocean remains a core component of trade around the world. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and the Americas to the west. As one component of

4823-412: The atmosphere over the oceans, keeping the British Isles and northwestern Europe mild and cloudy, and not severely cold in winter, like other locations at the same high latitude. The cold water currents contribute to heavy fog off the coast of eastern Canada (the Grand Banks of Newfoundland area) and Africa's northwestern coast. In general, winds transport moisture and air over land areas. Every winter,

4914-441: The call for security. North Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceanic divisions , with an area of about 85,133,000 km (32,870,000 sq mi). It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery , it was known for separating the New World of the Americas ( North America and South America ) from

5005-413: The coasts of Ireland and western Britain, and going as far north as Iceland, but they primarily operated in the western Mediterranean. In addition to seizing ships, they engaged in razzias , raids on European coastal towns and villages, mainly in Italy, France, Spain , and Portugal, but also in England , Scotland , the Netherlands , Ireland, and as far away as Iceland. The main purpose of their attacks

5096-405: The conclusion of the War of 1812 and America's peace with Britain, James Madison , Jefferson's successor, directed military forces against the Barbary states in the Second Barbary War. Lasting only three days, the second conflict ended the need for further tribute from the United States, granted the U.S. full shipping rights in the Mediterranean Sea, and significantly reduced incidents of piracy in

5187-431: The east, the boundaries of the ocean proper are Europe: the Strait of Gibraltar (where it connects with the Mediterranean Sea  – one of its marginal seas  – and, in turn, the Black Sea , both of which also touch upon Asia) and Africa. In the southeast, the Atlantic merges into the Indian Ocean. The 20° East meridian , running south from Cape Agulhas to Antarctica defines its border. In

5278-544: The eastern and western North Atlantic central water since the western part is strongly affected by the Gulf Stream and therefore the upper layer is closer to underlying fresher subpolar intermediate water. The eastern water is saltier because of its proximity to Mediterranean water. North Atlantic central water flows into South Atlantic central water at 15°N . There are five intermediate waters: four low-salinity waters formed at subpolar latitudes and one high-salinity formed through evaporation. Arctic intermediate water flows from

5369-400: The enclosed seas well known to the Greeks: the Mediterranean and the Black Sea. In contrast, the term "Atlantic" originally referred specifically to the Atlas Mountains in Morocco and the sea off the Strait of Gibraltar and the West African coast. The term " Aethiopian Ocean ", derived from Ancient Ethiopia , was applied to the southern Atlantic as late as the mid-19th century. During

5460-406: The focus later shifted to kidnapping for ransom. By the 19th century, pirate activity had declined, but Barbary pirates continued to demand tribute from American merchant vessels in the Mediterranean. Refusal to pay would result in the capture of American ships and goods, and often the enslavement or ransoming of crew members. After Thomas Jefferson became president of the US in March 1801, he sent

5551-568: The interconnected World Ocean , it is connected in the north to the Arctic Ocean , to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south. Other definitions describe the Atlantic as extending southward to Antarctica . The Atlantic Ocean is divided in two parts, the northern and southern Atlantic, by the Equator . The oldest known mentions of an "Atlantic" sea come from Stesichorus around mid-sixth century BC (Sch. A. R. 1. 211): Atlantikôi pelágei (Ancient Greek: Ἀτλαντικῷ πελάγει , '

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5642-454: The latter 2,000 km (1,200 mi). Ocean currents such as the Gulf Stream transport eel larvae from the Sargasso Sea to foraging areas in North America, Europe, and northern Africa. Recent but disputed research suggests that eels possibly use Earth's magnetic field to navigate through the ocean both as larvae and as adults. The climate is influenced by the temperatures of the surface waters and water currents as well as winds. Because of

5733-474: The limits of the oceans and seas in 1953, but some of these definitions have been revised since then and some are not recognized by various authorities, institutions, and countries, for example the CIA World Factbook . Correspondingly, the extent and number of oceans and seas vary. The Atlantic Ocean is bounded on the west by North and South America. It connects to the Arctic Ocean through the Denmark Strait , Greenland Sea , Norwegian Sea and Barents Sea . To

5824-429: The lowest values are in the high latitudes and along coasts where large rivers enter. Maximum salinity values occur at about 25° north and south , in subtropical regions with low rainfall and high evaporation. The high surface salinity in the Atlantic, on which the Atlantic thermohaline circulation is dependent, is maintained by two processes: the Agulhas Leakage/Rings , which brings salty Indian Ocean waters into

5915-454: The margins of the continents constitute about 11% of the bottom topography with few deep channels cut across the continental rise. The mean depth between 60°N and 60°S is 3,730 m (12,240 ft), or close to the average for the global ocean, with a modal depth between 4,000 and 5,000 m (13,000 and 16,000 ft). In the South Atlantic the Walvis Ridge and Rio Grande Rise form barriers to ocean currents. The Laurentian Abyss

6006-407: The maximum depth, the Milwaukee Deep in the Puerto Rico Trench , is 8,376 m (27,480 ft). Top large seas: The bathymetry of the Atlantic is dominated by a submarine mountain range called the Mid-Atlantic Ridge (MAR). It runs from 87°N or 300 km (190 mi) south of the North Pole to the subantarctic Bouvet Island at 54°S . Expeditions to explore the bathymertry of

6097-448: The money would be better spent on a navy that would protect American ships from the attacks of the Barbary pirates, and in the 1800 United States presidential election , Thomas Jefferson won against incumbent second President John Adams in part by noting that the United States was "subjected to the spoliations of foreign cruisers" and was humiliated by paying "an enormous tribute to the petty tyrant of Algiers". After Spain concluded

6188-457: The most consequential. Columbus' expedition ushered in an age of exploration and colonization of the Americas by European powers , most notably Portugal , Spain , France , and the United Kingdom . From the 16th to 19th centuries, the Atlantic Ocean was the center of both an eponymous slave trade and the Columbian exchange while occasionally hosting naval battles. Such naval battles, as well as growing trade from regional American powers like

6279-510: The most extensive and voluminous large igneous provinces in Earth's history associated with the Triassic–Jurassic extinction event , one of Earth's major extinction events . Theoliitic dikes , sills , and lava flows from the CAMP eruption at 200 Ma have been found in West Africa, eastern North America, and northern South America. The extent of the volcanism has been estimated to 4.5 × 10  km (1.7 × 10  sq mi) of which 2.5 × 10  km (9.7 × 10  sq mi) covered what

6370-502: The north to become the source for North Atlantic deep water, south of the Greenland-Scotland sill. These two intermediate waters have different salinity in the western and eastern basins. The wide range of salinities in the North Atlantic is caused by the asymmetry of the northern subtropical gyre and a large number of contributions from a wide range of sources: Labrador Sea, Norwegian-Greenland Sea, Mediterranean, and South Atlantic Intermediate Water. The North Atlantic deep water (NADW)

6461-425: The ocean's great capacity to store and release heat, maritime climates are more moderate and have less extreme seasonal variations than inland climates. Precipitation can be approximated from coastal weather data and air temperature from water temperatures. The oceans are the major source of atmospheric moisture that is obtained through evaporation. Climatic zones vary with latitude; the warmest zones stretch across

6552-565: The outlines of the coasts of the Old and the New Worlds. The remainder of the ridge was discovered in the 1920s by the German Meteor expedition using echo-sounding equipment. The exploration of the MAR in the 1950s led to the general acceptance of seafloor spreading and plate tectonics . Most of the MAR runs under water but where it reaches the surfaces it has produced volcanic islands. While nine of these have collectively been nominated

6643-407: The piracy. The Federalist Party had adopted the slogan, "Millions for defense, but not one cent for tribute," but had failed to end the attacks on merchant ships. From 1796 to 1797 French raiders seized some 316 merchant ships flying American colors. To counter this ongoing advent, three frigates, USS  United States , USS  Constitution and USS  Constellation , were built to answer

6734-595: The pond", rather than to discuss the ocean itself. The term dates to 1640, first appearing in print in a pamphlet released during the reign of Charles I , and reproduced in 1869 in Nehemiah Wallington 's Historical Notices of Events Occurring Chiefly in The Reign of Charles I , where "great Pond" is used in reference to the Atlantic Ocean by Francis Windebank , Charles I's Secretary of State . The International Hydrographic Organization (IHO) defined

6825-539: The powers subject to habitual depredations from them. A proposal was made to put up a coalition of naval warships from nations at war with the Barbary states , provided that naval operations would be directed against Algerian vessels in particular, and then impose a maritime blockade on North Africa. When this proposal was presented to the concerned countries, France refused, and Spain apologized for not accepting it, because of its recent treaty with Algiers. The proposal

6916-592: The president to commission privateers for the same purpose. During the reign of the Dey Omar Pasha (1815-1817), American-Algerian relations worsened when the Dey began to demand an increase in the annual tribute. The Americans went to Algiers to fight under Commodore Stephen Decatur , which culminated in the Battle off Cape Gata and the death of the famous corsair captain Raïs Hamidou . A letter to

7007-670: The prisoners, and agreed to continue sending gifts to the dey and replace its consul with another one, then withdrew its fleet from the Mediterranean in 1807. When the war broke out between America and Britain in 1812, the regent on the British throne, George IV , sent a letter to Dey Haji Ali Pasha (1809-1815) confirming to him the bonds of friendship that united the two countries and declaring his country's readiness to defend Algiers against every aggressor as long as these ties remained. By that he intended to win over Algiers to Britain against America, or at least convince Algiers to adopt

7098-615: The region. The Barbary corsairs were pirates and privateers who operated out of North Africa, based primarily in the ports of Tunis, Tripoli, and Algiers. This area was known in Europe as the Barbary Coast , in reference to the Berbers . The corsairs predation covered the Mediterranean, and extended south along West Africa 's Atlantic, even to the eastern coast of Brazil, into the North Atlantic Ocean raiding

7189-429: The same term [REDACTED] This disambiguation page lists articles associated with the title Tripoli Campaign . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Tripoli_Campaign&oldid=1086379324 " Category : Disambiguation pages Hidden categories: Short description

7280-438: The seafloor. The oldest oceanic crust in the Atlantic is up to 145 million years and is situated off the west coast of Africa and the east coast of North America, or on either side of the South Atlantic. In many places, the continental shelf and continental slope are covered in thick sedimentary layers. For instance, on the North American side of the ocean, large carbonate deposits formed in warm shallow waters such as Florida and

7371-551: The subtropics to the northeastern Atlantic. There this water is cooled during winter and forms return currents that merge along the eastern continental slope of Greenland where they form an intense (40–50  Sv ) current which flows around the continental margins of the Labrador Sea . A third of this water becomes part of the deep portion of the North Atlantic Deep Water (NADW). The NADW, in turn, feeds

7462-421: The surface is usually covered with sea ice in the Labrador Sea , Denmark Strait , and Baltic Sea. The Coriolis effect circulates North Atlantic water in a clockwise direction, whereas South Atlantic water circulates counter-clockwise. The south tides in the Atlantic Ocean are semi-diurnal; that is, two high tides occur every 24 lunar hours. In latitudes above 40° North some east–west oscillation, known as

7553-480: The total volume of the Earth's oceans. Excluding its marginal seas, the Atlantic covers 81,760,000 km (31,570,000 sq mi) and has a volume of 305,811,900 km (73,368,200 cu mi). The North Atlantic covers 41,490,000 km (16,020,000 sq mi) (11.5%) and the South Atlantic 40,270,000 km (15,550,000 sq mi) (11.1%). The average depth is 3,646 m (11,962 ft) and

7644-636: The upper layers of the circumpolar region, near the Drake Passage and the Falkland Islands. Both these currents receive some contribution from the Indian Ocean. On the African east coast, the small cyclonic Angola Gyre lies embedded in the large subtropical gyre. The southern subtropical gyre is partly masked by a wind-induced Ekman layer . The residence time of the gyre is 4.4–8.5 years. North Atlantic Deep Water flows southward below

7735-424: The western Atlantic and South Sandwich Trench (8,264 m or 27,113 ft) in the South Atlantic. There are numerous submarine canyons off northeastern North America, western Europe, and northwestern Africa. Some of these canyons extend along the continental rises and farther into the abyssal plains as deep-sea channels. In 1922, a historic moment in cartography and oceanography occurred. The USS Stewart used

7826-454: Was en route from France to Philadelphia about that time, had been captured by Barbary pirates, caused considerable upset in the U.S. Thomas Jefferson , who was elected to the presidency twice, was inclined to the idea of confronting Algiers with force. He wrote in his autobiography: I was very unwilling that we should acquiesce in the European humiliation of paying a tribute to those lawless pirates and endeavored to form an association of

7917-411: Was eventually captured and the crew taken prisoners and enslaved. To prevent this powerful warship from being used by the Barbary pirates, the ship was later destroyed by a raiding party of American Marines and soldiers and allied sailors from the armed forces of King Ferdinand of Sicily, led by Stephen Decatur. A treaty was reached on June 30, 1805, under which America paid Algiers $ 60,000 ransom for

8008-625: Was favored by Portugal , Malta , Naples , Venice , Denmark and Sweden . But the project failed when the US Congress objected to it for fear of its high financial costs, and more Algerian ships attacked American ships because of their lack of association with Algiers by any treaty in this period. Thus, in February 1, 1791, the US Congress was forced to allocate $ 40,000 to free American captives in Algiers. But two years later, it passed

8099-717: Was sent on May 13, 1801, under the command of Commodore Richard Dale . Other notable officers in the fleet included Stephen Decatur , assigned to the frigate USS  Essex and William Bainbridge in command of Essex which was attached to Commodore Richard Dale 's squadron which also included Philadelphia , President and Enterprise . The ship Philadelphia was blockading Tripoli's harbor when she ran aground on an uncharted reef. Under fire from shore batteries and Tripolitan gunboats , Captain William Bainbridge tried to refloat her by casting off all of her guns and other objects that weighed her down. The ship

8190-637: Was the first of two wars fought by the alliance of the United States and several European countries against the Northwest African Muslim states known collectively as the Barbary states. These were Tripoli and Algiers, quasi-independent entities nominally belonging to the Ottoman Empire, and (briefly) the independent Sultanate of Morocco . This war began during Thomas Jefferson's term when he refused to pay an amount that greatly increased when he became president. A U.S. naval fleet

8281-662: Was to capture Europeans for the slave market in North Africa. The Barbary states were nominally part of the Ottoman Empire , but in practice they were operating independently and the Ottoman government in Constantinople was not involved. Since the 1600s, the Barbary pirates had attacked British shipping along the northern coast of Africa, holding captives for ransom or enslaving them. Ransoms were generally raised by families and local church groups, including

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