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111-532: Official website This Maine -related article is a stub . You can help Misplaced Pages by expanding it . This article about a United States classical music orchestra is a stub . You can help Misplaced Pages by expanding it . Maine Maine ( / m eɪ n / MAYN ) is a state in the New England region of the United States , and the northeastern most state in

222-492: 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

333-484: A Native American dig site in 1954. The first European confirmed settlement in modern-day Maine was in 1604 on Saint Croix Island , led by French explorer Pierre Dugua, Sieur de Mons . His party included Samuel de Champlain , noted as an explorer. The French named the entire area Acadia , including the portion that later became the state of Maine. The Plymouth Company established the first English settlement in Maine at

444-506: 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

555-721: 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

666-513: A quarter of the population of Lewiston, Waterville , and Biddeford are Franco-American. Most of the residents of the Mid Coast and Down East sections are chiefly of British heritage. Smaller numbers of various other groups, including Irish , Italian , Swedish and Polish , have settled throughout the state since the late 19th and early 20th century immigration waves. Today there are four federally recognized tribes in Maine, including

777-416: 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

888-430: A yearly cycle. They would usually winter inland and head to the coasts by summer. European contact with what is now called Maine may have started around 1200 CE when Vikings are believed to have interacted with the native Penobscot in present-day Hancock County , most likely through trade. If confirmed, this would make Maine the site of the earliest European discovery in the entire US. About 200 years earlier, from

999-621: 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

1110-547: Is evident with migratory birds like piping plovers , American oystercatcher , and northern harrier , as well as resident species like black-capped chickadees , blue jays , and barred owls . Wetlands provide habitat for amphibians such as spotted salamanders , wood frogs , and toads. Freshwater habitats support fish species like brook trout , landlocked salmon , and multiple gamefish , while marine life in offshore waters includes Atlantic puffins , harbor seals , minke whales , and lobster . Maine's abundance of lobster makes

1221-467: 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

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1332-533: Is forested or unclaimed, the most forest cover of any U.S. state . In the wooded areas of the interior lies much uninhabited land, some of which does not have formal political organization into local units (a rarity in New England). The Northwest Aroostook unorganized territory in the northern part of the state, for example, has an area of 2,668 square miles (6,910 km ) and a population of 10, or one person for every 267 square miles (690 km ). Maine

1443-498: 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

1554-667: Is in the temperate broadleaf and mixed forests biome . The land near the southern and central Atlantic coast is covered by the mixed oaks of the Northeastern coastal forests . The remainder of the state, including the North Woods , is covered by the New England–Acadian forests . Maine has almost 230 miles (400 km) of ocean coastline (and 3,500 miles (5,600 km) of tidal coastline). West Quoddy Head in Lubec

1665-575: 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

1776-854: 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

1887-467: Is now Odanak . The other Abenaki tribes suffered several severe defeats, particularly during Dummer's War , with the capture of Norridgewock in 1724 and the defeat of the Pequawket in 1725, which significantly reduced their numbers. They finally withdrew to Canada , where they were settled at Bécancour and Sillery , and later at St. Francis, along with other refugee tribes from the south. Maine

1998-729: 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

2109-794: 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

2220-531: Is part of a cultural region known as Acadia that goes over the border into New Brunswick . Along with the Acadian population in the north, many French-Canadians came from Quebec as immigrants between 1840 and 1930. The upper Saint John River valley area was once part of the so-called Republic of Madawaska , before the frontier was decided in the Webster-Ashburton Treaty of 1842. Over

2331-537: Is the easternmost point of land in the 48 contiguous states. Along the famous rock-bound coast of Maine are lighthouses, beaches, fishing villages, and thousands of offshore islands, including the Isles of Shoals which straddle the New Hampshire border. There are jagged rocks and cliffs and many bays and inlets. Inland are lakes, rivers, forests, and mountains. This visual contrast of forested slopes sweeping down to

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2442-479: Is the most densely populated with nearly 40% of Maine's population. This area spans three counties and includes many farms and wooded areas; the 2016 population of Portland proper was 66,937. Maine has experienced a very slow rate of population growth since the 1990 census; its rate of growth (0.57%) since the 2010 census ranks 45th of the 50 states. In 2021 and 2022, however, Maine had the highest proportion of arriving residents to departing residents of any state in

2553-464: Is to the north and northeast, and the province of Quebec is to the northwest. Maine is the northernmost and largest state in New England, accounting for almost half of the region's entire land area. Maine is the only state to border exactly one other American state. Approximately half the area of Maine lies on each side of the 45th parallel north in latitude . Maine is the easternmost state in

2664-985: The Iliad and the Odyssey , this all-encompassing ocean was instead known as Oceanus , the gigantic river that encircled the world; in contrast to 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 ,

2775-452: The 9th-least populous , the 13th-least densely populated , and the most rural. Maine's capital is Augusta , and its most populous city is Portland , with a total population of 68,408, as of the 2020 census . The territory of Maine has been inhabited by Indigenous populations for about 12,000 years, after the glaciers retreated during the last ice age . At the time of European arrival, several Algonquian -speaking nations governed

2886-797: The Age of Discovery , it was known for separating the New World of the Americas ( North America and South America ) from 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

2997-564: 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

3108-654: The Colony of New Ireland , but returned to the United States following failed British offensives on the northern border, mid-Atlantic and south which produced a peace treaty that restored the pre-war boundaries. Maine was part of the Commonwealth of Massachusetts until 1820 when it voted to secede from Massachusetts to become a separate state. On March 15, 1820, under the Missouri Compromise , Maine

3219-547: The Columbian exchange while occasionally hosting naval battles. Such naval battles, as well as growing trade from regional American powers like 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

3330-645: The Confederate Army during the Battle of Gettysburg . Four U.S. Navy ships have been named USS Maine , most famously the armored cruiser USS  Maine  (ACR-1) , whose sinking by an explosion on February 15, 1898, precipitated the Spanish–American War . To the south and east is the Gulf of Maine , and to the west is the state of New Hampshire . The Canadian province of New Brunswick

3441-483: The Contiguous United States both in its extreme points and its geographic center. The town of Lubec is the easternmost organized settlement in the United States. Its Quoddy Head Lighthouse is also the closest place in the United States to Africa and Europe. Estcourt Station is Maine's northernmost point, as well as the northernmost point in New England. (For more information see extreme points of

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3552-493: The Eastern white pine . Coastal regions are characterized by hardy sea milkwort , sea-blight , bayberry , and the invasive rugosa rose . Maine's terrestrial fauna comprises mammals such as moose , black bears , and white-tailed deer , along with smaller species like red squirrels , snowshoe hares , and raccoons . Maine has the largest populations of moose and black bears in the contiguous United States. Avian diversity

3663-530: 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 , ' 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 '

3774-474: 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

3885-798: The Kennebec River and St. Croix River notionally became Cornwall County, Province of New York under a 1664 grant from Charles II of England to his brother James , at the time the Duke of York . Some of this land was claimed by New France as part of Acadia . All of the English settlements in the Massachusetts Bay Colony and the Province of New York became part of the Dominion of New England in 1686. All of present-day Maine

3996-527: The Lower 48 . It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and northwest, and shares a maritime border with Nova Scotia . Maine is the largest state in New England by total area, nearly larger than the combined area of the remaining five states. Of the 50 U.S. states , it is the 12th-smallest by area ,

4107-554: The Mahican of New York . Afterwards, many of these people were driven from their natural territories, but most of Maine's tribes continued, unchanged, until the American Revolution . Before this point, however, most of these people were considered separate nations. Many had adapted to living in permanent, Iroquois -inspired settlements, while those along the coast tended to move from summer villages to winter villages on

4218-470: The Mi'kmaq Nation . In 2020, 7,885 identified as being Native American alone, and 25,617 did in combination with one or more other races. 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

4329-684: 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

4440-616: 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

4551-514: 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,

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4662-536: The Popham Colony in 1607, the same year as the settlement at Jamestown, Virginia . The Popham colonists returned to Britain after 14 months. The French established two Jesuit missions: one on Penobscot Bay in 1609, and the other on Mount Desert Island in 1613. The same year, Claude de La Tour established Castine . In 1625, Charles de Saint-Étienne de la Tour erected Fort Pentagouet to protect Castine. The coastal areas of eastern Maine first became

4773-624: The Province of Maine in a 1622 land patent. The part of western Maine north of the Kennebec River was more sparsely settled and was known in the 17th century as the Territory of Sagadahock . A second settlement was attempted in 1623 by English explorer and naval Captain Christopher Levett at a place called York , where he had been granted 6,000 acres (24 km ) by King Charles I of England. It also failed. The 1622 patent of

4884-442: 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

4995-521: 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

5106-399: 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

5217-400: 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

5328-434: 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

5439-411: 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 ,

5550-418: The American Revolution and the War of 1812, with the British occupying eastern Maine in both conflicts via the Colony of New Ireland . The territory of Maine was confirmed as part of Massachusetts when the United States was formed following the Treaty of Paris ending the revolution, although the final border with British North America was not established until the Webster–Ashburton Treaty of 1842. Maine

5661-407: 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

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5772-468: 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

5883-403: 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,

5994-455: 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 , 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

6105-409: 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

6216-404: 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

6327-405: 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

6438-468: 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

6549-443: The Province of Maine was split at the Piscataqua River into the Province of New Hampshire to the south and New Somersetshire to the north. A disputed 1630 patent split off the area around present-day Saco as Lygonia . Justifying its actions with a 1652 geographic survey that showed an overlapping patent, the Massachusetts Bay Colony had seized New Somersetshire and Lygonia by force by 1658. The Territory of Sagadahock between

6660-437: 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

6771-415: The United States ) Maine's Moosehead Lake is the largest lake wholly in New England, since Lake Champlain is located between Vermont , New York , and Quebec . A number of other Maine lakes, such as South Twin Lake , are described by Thoreau in The Maine Woods (1864). Mount Katahdin is the northern terminus of the Appalachian Trail , which extends southerly to Springer Mountain , Georgia , and

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6882-452: The United States. According to the 2010 census , Maine has the highest percentage of non-Hispanic White of any state, at 94.4% of the total population. In 2011, 89.0% of all births in the state were to non-Hispanic White parents. Maine also has the second-highest residential senior population. According to HUD 's 2022 Annual Homeless Assessment Report , there were an estimated 4,411 homeless people in Maine. The table below shows

6993-416: The area and these nations are now known as the Wabanaki Confederacy . The first European settlement in the area was by the French in 1604 on Saint Croix Island , founded by Pierre Dugua, Sieur de Mons . The first English settlement was the short-lived Popham Colony , established by the Plymouth Company in 1607. A number of English settlements were established along the coast of Maine in the 1620s, although

7104-412: 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,

7215-412: The city and its metropolitan area. The earliest known inhabitants of the territory that is now Maine were Algonquian-speaking Wabanaki peoples, including the Passamaquoddy , Maliseet , Penobscot , Androscoggin , and Kennebec. During the later King Philip's War , many of these peoples would merge in one form or another to become the Wabanaki Confederacy , aiding the Wampanoag of Massachusetts and

7326-412: The country, with 1.8 arrivals for every departure. The modest population growth in the state has been concentrated in the southern coastal counties; with more diverse populations slowly moving into these areas of the state. However, the northern, more rural areas of the state have experienced a slight decline in population from 2010 to 2016. As of 2020, Maine has the highest population age 65 or older in

7437-410: The disputed areas containing land. Also in this easternmost area in the Bay of Fundy is the Old Sow , the largest tidal whirlpool in the Western Hemisphere . Maine is the least densely populated state east of the Mississippi River . It is called the Pine Tree State due to its largest distribution and presence of pine , including Pinus strobus and Pinus resinosa . Over 80% of its total area

7548-505: The early 1700s to Kahnewake , a Catholic Mohawk village near Montreal , where some were adopted and others ransomed. After the British defeated the French in Acadia in the 1740s, the territory from the Penobscot River east fell under the nominal authority of the Province of Nova Scotia , and together with present-day New Brunswick formed the Nova Scotia county of Sunbury , with its court of general sessions at Campobello. American and British forces contended for Maine's territory during

7659-425: The east, and the Americas to the west. As one component of 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

7770-431: 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

7881-544: 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

7992-526: The entire length of the sound. These features also have made it attractive for boat builders, such as the prestigious Hinckley Yachts . Bubble Rock, a glacial erratic , is a large boulder perched on the edge of Bubble Mountain in Acadia National Park . By analyzing the type of granite, geologists discovered that glaciers carried Bubble Rock to its present location from near Lucerne , 30 miles (48 km) away. The Iapetus Suture runs through

8103-493: The first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be 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

8214-653: The following year, keeping a balance between slave and free states. Maine's original state capital was Portland, Maine's largest city, until it was moved to the more central Augusta in 1832. The principal office of the Maine Supreme Judicial Court remains in Portland. The 20th Maine Volunteer Infantry Regiment , under the command of Colonel Joshua Lawrence Chamberlain , prevented the Union Army from being flanked at Little Round Top by

8325-542: The late spring and summer months are usually driest—a rarity across the Eastern United States. Maine has fewer days of thunderstorms than any other state east of the Rockies , with most of the state averaging fewer than twenty days of thunderstorms a year. Tornadoes are rare in Maine, with the state averaging two per year, although this number is increasing. Most severe thunderstorms and tornadoes occur in

8436-517: 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

8547-666: 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

8658-501: 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

8769-514: 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

8880-664: 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

8991-597: The melting of heavy glacier ice caused a slight rebounding effect of underlying rock; this land rise, however, was not enough to eliminate all the effect of the rising sea level and its invasion of former land features. Much of Maine's geomorphology was created by extended glacial activity at the end of the last ice age . Prominent glacial features include Somes Sound and Bubble Rock, both part of Acadia National Park on Mount Desert Island. Carved by glaciers, Somes Sound reaches depths of 175 feet (50 m). The extreme depth and steep drop-off allow large ships to navigate almost

9102-732: 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

9213-671: The north and west of the state, being underlain by the ancient Laurentian terrane , and the south and east underlain by the Avalonian terrane . Acadia National Park is the only national park in New England. Areas under the protection and management of the National Park Service include: Lands under the control of the state of Maine include: Maine has a humid continental climate ( Köppen climate classification Dfb ), with warm and sometimes humid summers, and long, cold and very snowy winters. Winters are especially severe in

9324-571: 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)

9435-541: The northern and western parts of Maine, while coastal areas are moderated slightly by the Atlantic Ocean , resulting in marginally milder winters and cooler summers than inland regions. Daytime highs are generally in the 75–85 °F (24–29 °C) range throughout the state in July, with overnight lows in the high 50s   °F (around 15   °C). January temperatures range from highs near 30 °F (−1 °C) on

9546-425: 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

9657-627: 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

9768-651: The pond" or "on the other side of the pond" or "across 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

9879-562: The racial composition of Maine's population as of 2016. According to the 2016 American Community Survey , 1.5% of Maine's population were of Hispanic or Latino origin (of any race): Mexican (0.4%), Puerto Rican (0.4%), Cuban (0.1%), and other Hispanic or Latino origin (0.6%). The six largest ancestry groups were: English (20.7%), Irish (17.3%), French (15.7%), German (8.1%), American (7.8%) and French Canadian (7.7%). People citing that they are American are of overwhelmingly English descent, but have ancestry that has been in

9990-557: The region for so long (often since the 17th century) that they choose to identify simply as Americans. Maine has the highest percentage of French Americans of any state. Most of them are of Canadian origin, but in some cases have been living there since prior to the American Revolutionary War . There are particularly high concentrations in the northern part of Maine in Aroostook County , which

10101-470: The rugged climate and conflict with the local Indigenous people caused many to fail. As Maine entered the 18th century, only a half dozen European settlements had survived. Loyalist and Patriot forces contended for Maine's territory during the American Revolution . During the War of 1812 , the largely undefended eastern region of Maine was occupied by British forces with the goal of annexing it to Canada via

10212-484: The sea has been summed up by American poet Edna St. Vincent Millay of Rockland and Camden , in "Renascence": All I could see from where I stood Was three long mountains and a wood; I turned and looked the other way, And saw three islands in a bay. Geologists describe this type of landscape as a "drowned coast", where a rising sea level has invaded former land features, creating bays out of valleys and islands out of mountain tops. A rise in land elevation due to

10323-438: 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

10434-672: The settlements in Iceland and Greenland , the Norse first identified America and attempted to settle areas such as Newfoundland , but failed to establish a permanent settlement. Archeological evidence suggests that Vikings in Greenland returned to North America for several centuries after the initial discovery to trade and collect timber, with the most relevant evidence being the Maine Penny , an 11th-century Norwegian coin found at

10545-469: The southern coast to overnight lows averaging below 0 °F (−18 °C) in the far north. The state's record high temperature is 105 °F (41 °C), set in July 1911, at North Bridgton. Precipitation in Maine is evenly distributed year-round, but with a slight summer maximum in northern/northwestern Maine and a slight late-fall or early-winter maximum along the coast due to " nor'easters " or intense cold-season rain and snowstorms. In coastal Maine,

10656-404: The southern terminus of the new International Appalachian Trail which, when complete, will run to Belle Isle , Newfoundland and Labrador . Machias Seal Island and North Rock , off the state's Downeast coast, are claimed by both Canada and the Maine town of Cutler , and are within one of four areas between the two countries whose sovereignty is still in dispute , but it is the only one of

10767-403: The southwestern interior portion of the state, where summer temperatures are often the warmest and the atmosphere is thus more unstable compared to northern and coastal areas. Maine rarely sees the direct landfall of tropical cyclones , as they tend to recurve out to sea or are rapidly weakening by the time they reach the cooler waters of Maine. In January 2009, a new record low temperature for

10878-505: The state the largest producer of lobster in the United States. The U.S. Census Bureau estimates that the population of Maine was 1,344,212 on July 1, 2019, a 1.19% increase since the 2010 United States census . At the 2020 census , 1,362,359 people lived in the state. The state's population density is 41.3 people per square mile, making it the least densely populated state east of the Mississippi River . As of 2010, Maine

10989-620: The state was set at Big Black River of −50 °F (−46 °C), tying the New England record. Annual precipitation varies from 35.8 in (909 mm) in Presque Isle to 56.7 in (1,441 mm) in Acadia National Park. Maine exhibits a diverse range of flora and fauna across its varied landscapes, including forests, coastline, and wetlands. Forested areas consist primarily of coniferous and deciduous trees, such as balsam fir , sugar maple , and its state tree,

11100-551: 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

11211-421: 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

11322-428: 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

11433-698: 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

11544-436: The war and refused to defend Maine from British invaders. In 1819, Massachusetts agreed to permit secession, sanctioned by voters of the rapidly growing region the following year. Formal secession from Massachusetts and admission of Maine as the 23rd state occurred on March 15, 1820, as part of the Missouri Compromise , which geographically restricted the spread of slavery and enabled the admission to statehood of Missouri

11655-424: 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

11766-507: Was admitted to the Union as the 23rd state. Today, Maine is known for its jagged, rocky Atlantic Ocean and bay-shore coastlines, mountains, heavily forested interior, and its cuisine, particularly wild lowbush blueberries and seafood such as lobster and clams . Coastal and Down East Maine have emerged as important centers for the creative economy , especially in the vicinity of Portland , which has also brought gentrification to

11877-555: Was also the most rural state in the Union, with only 38.7% of the state's population living within urban areas. As explained in detail under "Geography", there are large tracts of uninhabited land in some remote parts of the interior of the state, particularly in the North Maine Woods . The mean population center of Maine is located in Kennebec County , just east of Augusta. The Greater Portland metropolitan area

11988-494: Was applied to the southern Atlantic as late as the mid-19th century. During 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

12099-612: Was much fought over by the French , English, and allied natives during the 17th and 18th centuries. These natives conducted raids against settlers and each other, taking captives for ransom or, in some cases, kidnapped for adoption by Native American tribes. A notable example was the early 1692 Abenaki raid on York , where about 100 English settlers were killed and another estimated 80 taken hostage. The Abenaki took captives taken during raids of Massachusetts in Queen Anne's War of

12210-538: Was physically separate from the rest of Massachusetts. Longstanding disagreements over land speculation and settlements led to Maine residents and their allies in Massachusetts proper forcing an 1807 vote in the Massachusetts Assembly on permitting Maine to secede; the vote failed. Secessionist sentiment in Maine was stoked during the War of 1812 when Massachusetts pro-British merchants opposed

12321-516: Was unified as York County, Massachusetts under a 1691 royal patent for the Province of Massachusetts Bay . Central Maine was formerly inhabited by the Androscoggin tribe of the Abenaki nation , also known as Arosaguntacook. They were driven out of the area in 1690 during King William's War . They were relocated to St. Francis , Canada, which was destroyed by Rogers' Rangers in 1759, and

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