Aleutian Islands, chain of small islands that separate the Bering Sea (north) from the main portion of the Pacific Ocean (south) and extend in an arc southwest, then northwest, for about 1,100 miles (1,800 km) from the tip of the Alaska Peninsula to Attu Island, Alaska, U.S. The archipelago consists of 14 large islands, some 55 smaller islands, and innumerable islets, nearly all of which are part of the U.S. state of Alaska. The major island groups from east to west are the Fox Islands, the Islands of the Four Mountains, and the Andreanof, Rat, and Near islands. The Komandor (Commander) Islands near the Kamchatka Peninsula (Russia) are geographically part of the Aleutians. The Aleutians occupy a total area of 6,821 square miles (17,666 square km).
The Aleutian Islands form a segment of the circum-Pacific chain of volcanoes (often called the Ring of Fire) and represent a partially submerged continuation of Alaska’s Aleutian Range. Most of the islands bear marks of volcanic origin; some volcanoes—such as Shishaldin Volcano (9,372 feet [2,857 metres]), near the centre of Unimak Island—remain active. The shores are rocky and worn by the surf, and the approaches are dangerous; the land rises abruptly from the coasts to steep, bold mountains. The main navigational lanes through the chain are the Unimak, Umnak, Amukta, and Seguam passes.
Characterized by fairly uniform temperatures, high winds, heavy rainfall, and persistent fog, the Aleutians are practically devoid of trees but are covered with a luxuriant growth of grasses, sedges, and many flowering plants. The Aleutian Islands unit of the Alaska Maritime National Wildlife Refuge covers 4,250 square miles (11,000 square km) and extends between Unimak (east) and Attu (west) islands. The Aleutians provide a nesting habitat for some 15 to 30 million seabirds, including auklets, puffins, murres, and fulmars. By protecting the wildlife of the islands (notably sea otters and seals) and regulating kills, the refuge has preserved the way of life of the native Aleuts, who have always lived by fishing and hunting. The raising of blue foxes for the fur industry has furnished employment for many.
For some 8,000 years, Aleuts (who call themselves Unangan) were the sole inhabitants of the islands, and by the time of Russian exploration there were an estimated 25,000 Aleuts scattered throughout the islands. In 1741 the Russians sent the Dane Vitus Bering and the Russian Aleksey Chirikov on a voyage of discovery. After their ships parted in a storm, Chirikov discovered several of the eastern islands, while Bering discovered several of the western islands. Although Bering died during the voyage, several of the crew survived and returned to Russia with stories of the abundance of fur-bearing animals there. Siberian hunters subsequently flocked to the Komandor Islands and gradually moved eastward across the Aleutians to the mainland. Russia thus gained a foothold in North America but nearly caused the extinction of the Aleuts as a consequence of slaughter, forced relocation, and enslavement. Russia sold the islands, along with the rest of Alaska, to the United States in 1867.
The oldest and largest permanent settlement is that of Unalaska (Dutch Harbor) on Unalaska Island, where Russians built a village in the 1770s. Unalaska is the former headquarters of a large U.S. Coast Guard fleet that patrolled the sealing grounds of the Pribilof Islands to the north; the city’s Russian Orthodox Church of the Holy Ascension, one of the oldest Russian churches in the United States (the oldest parts date to 1825), has an extensive collection of religious artifacts and icons. Conflicts between the native Aleuts and Russian fur traders resulted in a massacre of Aleuts in the 1760s. Unalaska is now among the top fishing ports (particularly of walleye pollock [Theragra chalcogramma]) in the United States, with large fish-processing plants on land and factory ships offshore. Adak (formerly Adak Station) was the site of a naval station (1942–97); military installations were used during World War II as a base for mounting a campaign against Japanese-held islands. Before the closure of the naval station, Adak was once Alaska’s sixth-largest city, with some 6,000 people. In 2004 some nearly 50,000 acres (20,000 hectares) of land on Adak Island (including the former naval station) were transferred to the Aleut Corporation, a Native Alaskan organization established under the Alaska Native Claims Settlement Act of 1971.
On Dec. 8, 2004, a freighter broke apart near Unalaska Island, spilling about 350,000 gallons (1,320,000 litres) of fuel oil into the ocean. Several thousand birds and fish were killed by the resulting pollution. Cleanup efforts took more than one and a half years, and by 2009 more than $110 million in damage fees had been paid by the ship’s owners and operators to the state.
Articles from Britannica encyclopedias for elementary and high school students.
- Aleutian Islands - Student Encyclopedia (Ages 11 and up)
The chain of small islands that make up the Aleutian Islands separates the Bering Sea from the main part of the Pacific Ocean. They form part of the state of Alaska in the United States. The almost 70 islands form an arc that extends for about 1,100 miles (1,800 kilometers) from the tip of the Alaska Peninsula to Attu Island in the North Pacific. They occupy a land area of 6,821 square miles (17,666 square kilometers). Most of the islands were formed by volcanic eruptions.
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