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|Location||Pacific Ocean, Bering Sea|
|Major islands||Unalaska Island|
|Area||6,821 sq mi (17,666 km2)|
|Length||1,200 mi (1,900 km)|
|Largest city||Unalaska (pop. 4,283)|
|Population||8,162 (as of 2000)|
The Aleutian Islands (English pronunciation: /əˈl(j)uːʃən/; possibly from Chukchi aliat, "island") are a chain of 14 large volcanic islands and 57 smaller ones, forming part of the Aleutian Arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666 km²) and extending about 1,200 mi (1,900 km) westward from the Alaska Peninsula toward the Kamchatka Peninsula, marking a line between the Bering Sea and the Pacific Ocean. Crossing longitude 180°, they are the westernmost part of the United States (and by one definition the easternmost; see Extreme points of the United States). Nearly all the archipelago is part of Alaska and usually considered as being in the "Alaskan Bush", but at the extreme western end the small, geologically related, and remote Commander Islands are in Russia. The islands, with their 57 volcanoes, are in the northern part of the Pacific Ring of Fire. The Alaska Marine Highway (a ferry service) passes through the islands.
Physiographically, they are a distinct section of the larger Pacific Border province, which in turn is part of the larger Pacific Mountain System physiographic division.
The islands, known before 1867 as the Catherine Archipelago, comprise five groups (east to west): the Fox, Islands of Four Mountains, Andreanof, Rat, and Near island groups (with Buldir Island halfway between Favian and Diana Islands, but part of neither group). They are all located between 51° and 55° N latitude and 172° E and 163° W longitude. The largest islands in the Aleutians are Attu (the furthest from the mainland), and Unalaska, Umnak, and Akun in the Fox Islands.
The axis of the archipelago near the mainland of Alaska has a southwest trend, but near 179° its direction changes to the northwest. This change of direction corresponds to a curve in the line of volcanic fissures that have contributed their products to the building of the islands. Such curved chains are repeated about the Pacific Ocean in the Kuril Islands, the Japanese chain, and in the Philippines. All these island arcs are at the edge of the Pacific Plate and experience much seismic activity, but are still habitable; the Aleutians lie between the Pacific and North American tectonic plates. The general elevation is greatest in the eastern islands and least in the western. The island chain is a western continuation of the Aleutian Range on the mainland.
The great majority of the islands bear evident marks of volcanic origin, and there are numerous volcanic cones on the north side of the chain, some of them active; many of the islands, however, are not wholly volcanic, but contain crystalline or sedimentary rocks, and also amber and beds of lignite. The coasts are rocky and surf-worn, and the approaches are exceedingly dangerous, the land rising immediately from the coasts to steep, bold mountains.
These volcanic islands reach heights of 6,200 feet (1,900 m). Makushin Volcano (5,691 feet (1,735 m)) located on Unalaska Island, is not quite visible from within the town of Unalaska, though the steam rising from its cone is visible on a (rare) clear day. Residents of Unalaska need only to climb one of the smaller hills in the area, such as Pyramid Peak or Mt. Newhall, to get a good look at the snow-covered cone. The volcanic Bogoslof and Fire Islands, which rose from the sea in 1796 and 1883 respectively, lie about 30 miles (50 km) west of Unalaska Bay...
The climate of the islands is oceanic, with moderate and fairly uniform temperatures and heavy rainfall. Fogs are almost constant. Summer weather is much cooler than Southeast Alaska (around Sitka), but the winter temperature of the islands and of the Alaska Panhandle is very nearly the same. During the winter time the islands are the center for the semi-permanent low-pressure area called the Aleutian low.
The mean annual temperature for Unalaska, the most populated island of the group, is about 38°F (3°C), being about 30°F (−1°C) in January and about 52 °F (11 °C) in August. The highest and lowest temperatures recorded on the islands are 78°F (26°C) and 5°F (−15°C) respectively. The average annual rainfall is about 80 inches (2,000 mm), and Unalaska, with about 250 rainy days per year, is said to be one of the rainiest places within the United States.
The growing season lasts about 135 days, from early in May until late in September, but agriculture is limited to the raising of a few vegetables. With the exception of some stunted willows, the vast majority of the chain is destitute of native trees. On some of the islands, such as Adak and Amaknak, there are a few coniferous trees growing, remnants of the Russian period. While tall trees grow in many cold climates, Aleutian conifers—some of them estimated to be two hundred years old—rarely reach a height of even 10 feet (3 m), and many of them are still less than 5 feet (1.5 m) tall. This is because the islands, much like the Falklands and other islands of similar latitudes, experience such strong winds that taller trees are vulnerable to snapping off.
Instead of trees, the islands are covered with a luxuriant, dense growth of herbage and shrubs, including crowberry, bluejoint, grasses, sedges, and many flowering plants. There are areas of peat bog near the coasts. Endemic plants include the endangered Aleutian Shield Fern.
The Aleutians are home to many large colonies of seabirds, including Buldir Island, with 21 breeding seabird species, including the Bering Sea-endemic Red-legged Kittiwake. Large seabird colonies are also present at Kiska, Gareloi, Semisopochnoi, Bogoslof, and others. The islands are also frequented by vagrant Asiatic birds, including the Common Rosefinch, Siberian Rubythroat, Bluethroat, Lanceolated Warbler, and the first North American record of the Intermediate Egret
The habitats of the Aleutians are largely unspoiled but wildlife is affected by competition from introduced species such as cattle, caribou, and foxes. Radioactivity is still present in the environment following nuclear weapon testing on Amchitka in 1971. Today almost all of the Aleutians are protected as part of the Alaska Maritime National Wildlife Refuge and the Aleutian Islands Wilderness.
On the less mountainous islands, the raising of sheep and reindeer was once believed to be practicable. There are bison on islands near Sand Point. Sheep raising seems to have died off with the advent of synthetic fibers which lowered the value of wool. During the 1980s, there were some llama being raised on Unalaska. Today, the economy is primarily based upon fishing, and, to a lesser extent, the presence of American military. The only crop is potato. Chickens are raised in barns under protection from cold.
The native people refer to themselves as Unangan, and are now generally known by most non-natives as the "Aleut".
The 2000 Census recorded a population of 8,162 on the islands, of whom 4,283 were living in the main settlement of Unalaska.
Because of the location of the islands, stretching like a broken bridge from Asia to America, many anthropologists believe they were a route of the first human occupants of the Americas. The earliest known evidence of human occupation in the Americas is much farther south; the early human sites in Alaska have probably been submerged by rising waters during the current interglacial period. People living in the Aleutian Islands developed fine skills in hunting, fishing, and basketry. Hunters made their weapons and watercraft. The baskets are noted for being finely woven with carefully shredded stalks of beach rye.
Russian period 
Explorers, traders and missionaries arrived from Russia beginning in 1741.
In 1741 the Russian government sent Vitus Bering, a Dane in the service of Russia, and Aleksei Chirikov, a Russian, in the ships Saint Peter and Saint Paul on a voyage of discovery in the Northern Pacific. After the ships were separated by a storm, Chirikov discovered several eastern islands of the Aleutian group, and Bering discovered several of the western islands, finally being wrecked and losing his life on the island of the Komandorskis (Commander Islands) that now bears his name (Bering Island). The survivors of Bering's party reached the Kamchatka Peninsula in a boat constructed from the wreckage of their ship, and reported that the islands were rich in fur-bearing animals.
Siberian fur hunters flocked to the Commander Islands and gradually moved eastward across the Aleutian Islands to the mainland. In this manner, Russia gained a foothold on the northwestern coast of North America. The Aleutian Islands consequently belonged to Russia, until that country transferred all its possessions in North America to the United States in 1867.
During the consolidation of the Russian-American Company there was sporadic conflict with the native population (frequently disastrous to the poorly armed and vastly outnumbered Russians). The colonies soon entered a relatively stable state based on cooperation, intermarriage, and official policies that provided social status, education, and professional training to children of mixed Aleut-Russian birth. Within a generation or two the day-to-day administration of the Russian-American colonies was largely in the hands of native-born Alaskans. Reversing the usual trend in colonization where indigenous technologies are replaced, the Russians adopted the Aleut kayak, or baidarka, sea otter hunting techniques, and the working of native copper deposits. The Russians instituted public education, preservation of the Aleut language through transliteration of religious and other texts into Aleut via an adaptation of the Cyrillic alphabet, vaccination of the native population against smallpox, and science-based sea mammal conservation policies that were far ahead of their time.
By 1760, the Russian merchant Andrian Tolstykh had made a detailed census in the vicinity of Adak and extended Russian citizenship to the Aleuts.
During his third and last voyage, in 1778, Captain James Cook surveyed the eastern portion of the Aleutian archipelago, accurately determined the position of some of the more important islands, and corrected many errors of former navigators.
Orthodox Christian Heritage 
Among the first Christian missionaries to arrive in the Aleutian Islands was a party of ten Russian Orthodox monks and priests, who arrived in 1793. Within two years, a monk named Herman was the only survivor of that party. He settled on Spruce Island, near Kodiak Island, and often defended the rights of the Aleuts against the Russian trading companies. He is now known in the Orthodox Church as Saint Herman of Alaska.
Another early Christian missionary of the Russian Orthodox Church was Father Veniaminov who arrived in Unalaska in 1824. He was named Bishop Innokentii in 1840 and moved to Sitka. He is now known in the Orthodox Church as Saint Innocent of Alaska.
The principal settlements were on Unalaska Island. The oldest was Iliuliuk (also called Unalaska), settled in 1760-1775, with a customs house and an Orthodox church.
U.S. possession 
After the American purchase of Alaska from Russia in 1867, further development took place. New buildings included a Methodist mission and orphanage, and the headquarters for a considerable fleet of United States revenue cutters which patrolled the sealing grounds of the Pribilof Islands. The first public school in Unalaska opened in 1883.
The U.S. Congress extended American citizenship to all Natives (and this law has been held to include the indigenous peoples of Alaska) in 1924.
A hospital was built in Unalaska in 1933 by the U.S. Bureau of Indian Affairs.
World War II 
During World War II, small parts of the Aleutian islands were occupied by Japanese forces, when Attu and Kiska were invaded in order to divert American forces away from the main Japanese attack at Midway Atoll. The U.S. Navy, having broken the Japanese naval codes, knew that this was just a diversion, and it did not expend large amounts of effort in defending the islands. More than 90 Americans were taken to Japan as prisoners of war. Most of the civilian population (over 800) of the Aleutians and Pribilovians were interned by the United States in camps in the Alaska Panhandle. During the Aleutian Islands Campaign, American and Canadian forces invaded Japanese-held Attu and defeated the Japanese, and subsequently regained control of all the islands. The islands were also a stopping point for hundreds of aircraft sent from California to Russia as part of the war effort.[dubious ]
Monday, June 3, 2002 was celebrated as Dutch Harbor Remembrance Day. The governor of Alaska ordered state flags lowered to half-staff to honor the 78 soldiers who died during the two-day Japanese air attack in 1942. The Aleutian World War II National Historic Area Visitors Center opened in June 2002.
Recent and miscellaneous developments 
The Alaska Native Claims Settlement Act became law in 1971. In 1977, the Ounalashka Corporation (from Unalaska) declared a dividend. This was the first village corporation to declare and pay a dividend to its shareholders.
In 1906 a new volcanic cone rose between the islets of Bogoslof and Grewingk, near Unalaska, followed by another in 1907. These cones were nearly demolished by an explosive eruption on September 1, 1907.
Nuclear Testing on Amchitka 
The United States conducted underground tests of nuclear weapons on Amchitka Island from 1965 to 1971 as part of the Vela Uniform program. The final detonation, the Cannikin, was the largest underground nuclear explosion by the United States.
See also 
- 1946 Aleutian Islands earthquake
- Aleutian Islands Campaign
- Aleutians East Borough, Alaska
- Aleutians West Census Area, Alaska
- List of Aleutian Island volcanoes
- List of Aleutian Islands
- List of birds of Aleutian Islands
- List of islands
- Maritime Fur Trade
- Military history of the Aleutian Islands
- Peter the Aleut
Western Aleutian Islands, from a 1916 map of the Alaska Territory
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
Total area of 6,821 sq mi (17,670 km2) from Encyclopædia Britannica Online
Further reading 
- Gibson, Daniel D., and G. Vernon Byrd. Birds of the Aleutian Islands, Alaska. Cambridge, Mass: Nuttall Ornthological Club, 2007. ISBN 978-0-943610-73-3
- Ivanov, Viacheslav Vsevolodovich. The Russian Orthodox Church of Alaska and the Aleutian Islands and Its Relation to Native American Traditions—An Attempt at a Multicultural Society, 1794-1912. Washington, DC: Library of Congress, 1997. ISBN 0-16-048781-1
- Jochelson, Waldemar. Archaeological Investigations in the Aleutian Islands. Washington: Carnegie Institution of Washington, 1925.
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