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Alaska features some of the most prominent continental shelves in the world, extending over 400 nautical miles from the tip of Alaska, near Utqiagvik. At a depth of less than 200 meters, the Chukchi Shelf is the preeminent shelf in the arctic, barely engulfed by the Arctic Ocean .
The Alaska Heritage Resources Survey (AHRS) is a restricted inventory of all reported historic and prehistoric sites within the U.S. state of Alaska; it is maintained by the Office of History and Archaeology. The survey's inventory of cultural resources includes objects, structures, buildings, sites, districts, and travel ways, with a general ...
Intrigued by the Alaska Peninsula's volcanoes, he first visited the Aniakchak region in 1930. Hubbard and four companions arrived at the mouth of the Aniakchak River in June 1930. They used a 15-foot (4.6 m) open motorboat to boat up the river, then explored the caldera, finding fumaroles in the crater.
The wildlife of Alaska is both diverse and abundant. The Alaskan Peninsula provides an important habitat for fish, mammals, reptiles, and birds. At the top of the food chain are the bears. Alaska contains about 70% of the total North American brown bear population and the majority of the grizzly bears, as well as black bears and Kodiak bears.
The Chukchi Shelf or Chukchi Sea Shelf is the westernmost part of the continental shelf of the United States and the easternmost part of the continental shelf of Russia. In the west it merges with the Russian Siberian Shelf. Within this shelf, the 50-mile Chukchi Corridor acts as a passageway for one of the largest marine mammal migrations in ...
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At its eastern end the Cordilleran ice sheet merged with the Laurentide Ice Sheet at the Continental Divide, forming an area of ice that contained one and a half times as much water as the Antarctic ice sheet does today. The ice sheet faded north of the Alaska Range because the climate was too dry to form glaciers. [citation needed]
The first federal lease sale offshore Alaska was held in 1976. Alaska produces oil and gas from offshore areas in the Cook Inlet and the Arctic Ocean. [7] Endicott Island is an artificial island built to produce oil from beneath the Beaufort Sea. There are currently four artificial islands being used for drilling.