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     from Wikipedia

    Alaska

    From Wikipedia, the free encyclopedia

    Jump to: navigation, search
    State of Alaska
    Flag of Alaska State seal of Alaska
    Flag of Alaska Seal
    Nickname(s): The Last Frontier
    Motto(s): "North to the Future"
    Map with Alasaka highlighted
    Official language(s) none
    Spoken language(s) English 85.7%,
    Native North American 5.2%,
    Spanish 2.9%
    Capital Juneau
    Largest city Anchorage
    Area  Ranked 1st
     - Total 663,267 sq mi
    (1,717,855 km²)
     - Width 808 miles (1,300 km)
     - Length 1,479 miles (2,380 km)
     - % water 13.77
     - Latitude 51°20'N to 71°50'N
     - Longitude 130°W to 172°E
    Population  Ranked 47th
     - Total 626,932
     - Density 1.09/sq mi 
    0.42/km² (50th)
     - Median income  $54,627 (6th)
    Elevation  
     - Highest point Mount McKinley[1]
    20,320 ft  (6,193.7 m)
     - Mean 1900 ft  (580 m)
     - Lowest point Pacific Ocean[1]
    0 ft  (0 m)
    Admission to Union  January 3, 1959 (49th)
    Governor Sarah Palin (R)
    U.S. Senators Ted Stevens (R)
    Lisa Murkowski (R)
    Congressional Delegation List
    Time zones  
     - east of 169° 30' Alaska: UTC-9/DST-8
     - west of 169° 30' Aleutian: UTC-10/DST-9
    Abbreviations AK US-AK
    Web site www.alaska.gov

    Alaska (IPA: /əˈlæskə/, Russian: Аляска) is a state in the United States of America, in the extreme northwest portion of the North American continent. It is the largest U.S. state by area (by a substantial margin), and one of the wealthiest and most racially diverse.[2]

    The area that became Alaska was purchased from Russian interests on March 30, 1867. The land went through several administrative changes before becoming an organized territory in 1912 and the 49th state of the U.S. on January 3, 1959. The name "Alaska" is derived from the Aleut alaxsxaq, meaning "the mainland", or more literally "the object towards which the action of the sea is directed".[3]

    Geography

    Alaska is one of two U.S. states not bordered by another state, Hawaii being the other. Alaska has more coastline than all the other US states combined[4]. It is the only non-contiguous state in North America; about 500 miles (800 km) of Canadian territory separate Alaska from Washington State. Alaska is thus an exclave of the United States, part of the continental U.S. but is not part of the contiguous U.S.[5] Alaska is the only state whose capital city is inaccessible by land - no roads connect Juneau to the rest of the state.

    The state is bordered by Yukon and British Columbia, Canada to the east, the Gulf of Alaska and the Pacific Ocean to the south, the Bering Sea, Bering Strait, and Chukchi Sea to the west, and the Beaufort Sea and the Arctic Ocean to the north.

    Alaska is the largest state in the United States in land area at 570,380 square miles (1,477,277 km²), over twice as large as Texas, the next largest state. If the state's westernmost point were superimposed on San Francisco, California, its easternmost point would be in Jacksonville, Florida. It is larger than all but 18 sovereign nations.

    Near Little Port Walter in Southeast Alaska.
    Near Little Port Walter in Southeast Alaska.

    One scheme for describing the state's geography is by labeling the regions:

    The northeast corner of Alaska is covered by the Arctic National Wildlife Refuge, which covers 19,049,236 acres (77,090 km²). Much of the northwest is covered by the larger National Petroleum Reserve–Alaska, which covers around 23,000,000 acres (93,100 km²) million acres. The Arctic is Alaska's most remote wilderness. A location in the National Petroleum Reserve–Alaska is 120 miles (190 km) miles from any town or village, the geographic point most remote from permanent habitation in the USA.

    With its numerous islands, Alaska has nearly 34,000 miles (54,720 km) of tidal shoreline. The island chain extending west from the southern tip of the Alaska Peninsula is called the Aleutian Islands. Many active volcanoes are found in the Aleutians. For example, Unimak Island is home to Mount Shishaldin, a moderately active volcano that rises to 9,980 feet (3,042 m) above sea level. The chain of volcanoes extends to Mount Spurr, west of Anchorage on the mainland.

    One of North America's largest tides occurs in Turnagain Arm, just south of Anchorage - tidal differences can be more than 35 feet (10.7 m). (Many sources say Turnagain has the second-greatest tides in North America, but several areas in Canada have larger tides.[6])

    Alaska has 3.5 million lakes of 20 acres (8 ha) or larger [7]. Marshlands and wetland permafrost cover 188,320 square miles (487,747 km²) (mostly in northern, western and southwest flatlands). Frozen water, in the form of glacier ice, covers some 16,000 square miles (41,440 km²) of land and 1,200 square miles (3,110 km²) of tidal zone. The Bering Glacier complex near the southeastern border with Yukon, Canada, covers 2,250 square miles (5,827 km²) alone.

    The Aleutian Islands cross longitude 180°, so Alaska can be considered the easternmost state as well as the westernmost. Alaska, and especially the Aleutians, are one of the extreme points of the United States. The International Date Line jogs west of 180° to keep the whole state, and thus the entire continental United States, within the same legal day.

    According to an October 1998 report by the United States Bureau of Land Management, approximately 65% of Alaska is owned and managed by the U.S. federal government as public lands, including a multitude of national forests, national parks, and national wildlife refuges. Of these, the Bureau of Land Management manages 87 million acres (350,000 km²), or 23.8% of the state. The Arctic National Wildlife Refuge is managed by the United States Fish and Wildlife Service.

    Of the remaining land area, the State of Alaska owns 24.5%; another 10% is managed by 13 regional and dozens of local Native corporations created under the Alaska Native Claims Settlement Act. Various private interests own the remaining land, totaling less than 1%.

    Map of Alaska - PDF
    Map of Alaska - PDF

    Alaska is administratively divided into "boroughs", as opposed to "counties." The function is the same, but whereas some states use a three-tiered system of decentralization — state/county/township — most of Alaska uses only two tiers — state/borough. Owing to the low population density, most of the land is located in the Unorganized Borough which, as the name implies, has no intermediate borough government of its own, but is administered directly by the state government. Currently (2000 census) 57.71% of Alaska's area has this status, with 13.05% of the population. For statistical purposes the United States Census Bureau divides this territory into census areas. Anchorage merged the city government with the Greater Anchorage Area Borough in 1971 to form the Municipality of Anchorage, containing the city proper and the bedroom communities of Eagle River, Chugiak, Peters Creek, Girdwood, Bird, and Indian. Fairbanks has a separate borough (the Fairbanks North Star Borough) and municipality (the City of Fairbanks).

    Climate

    The climate in Juneau and the southeast panhandle is best described as a cooler version of Seattle. It is a mid-latitude oceanic climate (Köppen climate classification Cfb) in the southern sections and a subarctic oceanic climate (Köppen Cfc) in the northern parts. On an annual basis, this is both the wettest and warmest part of Alaska with milder temperatures in the winter and high precipitation throughout the year. Juneau averages over 50 inches (1,270 mm) of precipitation a year, while other areas receive over 275 inches (6,990 mm).[8] This is also the only region in Alaska in which the average daytime high temperature is above freezing during the winter months.

    The climate in south central Alaska, with Anchorage as a city, is mild by Alaskan standards. This is due in large part to its proximity to the coast. While it does not get nearly as much rain as the southeast of Alaska, it does get more snow, although days tend to be clearer here. On average, Anchorage receives 16 inches (406 mm) of precipitation a year, with around 75 inches (1,905 mm) of snow, although there are areas in the south central which receive far more snow. It is a subarctic climate (Köppen Dfc) due to its short, cool summers though.

    Barrow, Alaska is the northernmost city in the United States.
    Barrow, Alaska is the northernmost city in the United States.

    The climate of Western Alaska is determined in large part by the Bering Sea and the Gulf of Alaska. It is a subarctic oceanic climate in the southwest and a continental subarctic climate farther north. The temperature is somewhat moderate considering how far north the area is. This area has a tremendous amount of variety, especially when considering precipitation. The northern side of the Seward Peninsula is technically a desert with less than 10 inches (250 mm) of precipitation annually, while some locations between Dillingham and Bethel average around 100 inches (2,540 mm) of precipitation.[8]

    The climate of the interior of Alaska is best described as extreme and is the best example of a true subarctic climate. Some of the hottest and coldest temperatures in Alaska occur around the area near Fairbanks. The summers can have temperatures reaching into the 80s°F (near 30 °C), while in the winter, the temperature can fall below −60 °F (-52 °C). Precipitation is not much in the Interior, often less than 10 inches (250 mm) a year, but what precipitation falls in the winter tends to stay the entire winter.

    The highest and lowest recorded temperatures in Alaska are both in the Interior. The highest is 100 °F (38 °C) in Fort Yukon on June 27, 1915,[9][10] tied with Pahala, Hawaii as the lowest high temperature in the United States.[11][12] The lowest Alaska temperature is −80 °F (-64 °C) in Prospect Creek on January 23, 1971,[9][10] one degree above the lowest temperature recorded in North America (in Snag, Yukon, Canada).[13]

    The climate in the extreme north of Alaska is as expected for an area north of the Arctic Circle. It is an Arctic climate (Köppen ET) with long, very cold winters and short, cool summers. Even in July, the average low temperature is barely above freezing in Barrow, at 34 °F (2 °C).[14] Precipitation is light in this part of Alaska, with many places averaging less than 10 inches (250 mm) per year, mostly in the form of snow which stays on the ground almost the entire year.

    History

    Main article: History of Alaska
    Miners and prospectors climb the Chilkoot Trail during the Klondike Gold Rush.
    Miners and prospectors climb the Chilkoot Trail during the Klondike Gold Rush.

    At the end of the Upper Paleolithic Period (around 12,000 BCE), Asiatic groups crossed the Bering Land Bridge into what is now western Alaska. At the time of European contact by the Russian explorers, the area was populated by Alaska Native groups.

    The first European contact with Alaska occurred in the 1741, when