Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, 31 miles (50 km) behind the main Aleutian volcanic arc. It has a land area of 173 acres (0.70 km2) and is unpopulated. The peak elevation of the island is 490 feet (150 m). It last erupted in 1992. It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide.

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dbo:abstract
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, 31 miles (50 km) behind the main Aleutian volcanic arc. It has a land area of 173 acres (0.70 km2) and is unpopulated. The peak elevation of the island is 490 feet (150 m). It last erupted in 1992. It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome extruded in 1883 from the same stratovolcano emerges from the water as a stack rock known as Fire Island. At the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928 and 1992. The island is uninhabited by humans but is a breeding site for seabirds, seals and sea lions. About 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here, and there is an expanding rookery for fur seals while a sea lion rookery which once housed 5,000 individuals has reduced in size.In 1909 President Theodore Roosevelt designated Bogoslof and neighboring Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are now part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, the island was designated a National Natural Landmark by the National Park Service. The islands were added to the National Wilderness Preservation System in 1970. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, 31 miles (50 km) behind the main Aleutian volcanic arc. It has a land area of 173 acres (0.70 km2) and is unpopulated. The peak elevation of the island is 490 feet (150 m). It last erupted in 2016. It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome extruded in 1883 from the same stratovolcano emerges from the water as a stack rock known as Fire Island. At the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928,1992-1992, and 2016. The island is uninhabited by humans but is a breeding site for seabirds, seals and sea lions. About 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here, and there is an expanding rookery for fur seals while a sea lion rookery which once housed 5,000 individuals has reduced in size.In 1909 President Theodore Roosevelt designated Bogoslof and neighboring Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are now part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, the island was designated a National Natural Landmark by the National Park Service. The islands were added to the National Wilderness Preservation System in 1970. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The most recent erupted took place December 22, 2016. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The most recent erupted took place December 22, 2016. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The most recent volcanic eruption took place December 22, 2016. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970.A short series of volcanic eruptions took place December 20-22, 2016 producing towering clouds of debris and changing the geography of the island. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970.A short series of volcanic eruptions took place December 21-22, 2016 producing towering volcanic ash clouds and changing the geography of the island. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796 and is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970.A short series of volcanic eruptions took place December 21-23, 2016 producing towering volcanic ash clouds and changing the geography of the island. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 169 acres (0.68 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. The stratovolcano rises about 6,000 feet (1,800 m) from the seabed but the summit is the only part that projects above sea level.The first known emergence of the island above sea level was recorded during an underwater eruption in 1796. Since then, parts of the island have been successively added and eroded. About 2,000 feet (610 m) north west of Bogoslof a small volcanic dome emerged in 1883 from the same stratovolcano, this has become a stack rock formation known as Fire Island . On the southwest side of Bogoslof another dome erupted in 1796; it is now called Castle Rock. Other eruptions have occurred in 1796-1804, 1806-1823, 1883-1895, 1906, 1907, 1909-1910, 1926-1928, and 1992. The island is a breeding site for seabirds, seals, and sea lions. An estimated 90,000 tufted puffins, guillemots, red-legged kittiwakes and gulls nest here.In 1909, President Theodore Roosevelt designated Bogoslof and Fire Island a sanctuary for sea lions and nesting marine birds. Together, as the Bogoslof Wilderness, they are currently part of the Aleutian Islands unit of Alaska Maritime National Wildlife Refuge. In November 1967, Bogoslof Island was designated a National Natural Landmark by the National Park Service. The Bogoslof Island group was added to the National Wilderness Preservation System in 1970.A series of short volcanic eruptions on a nearly daily basis took place starting December 20, 2016, producing towering volcanic ash clouds and volcanic lightning, changing the geography of the island. As there are no cameras or monitoring stations on the island and the area is usually overcast details were uncertain. However when the weather became favorable, it was seen that a small vent slightly offshore of Bogoslof's northeast beach had erupted explosively, fracturing the original island in two, and forming a new, smaller island to the northeast. Analysis on 29 December found that the island had lost a net 15,300 square meters (3.77 acres, 1.53 hectares) of land from the eruption, or roughly 2% of its original land area (0.7 square kilometers or 173 acres). (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located at the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 319.3 acres (1.292 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1,040 meters (3,410 ft) long and 1,512 m (4,961 ft) wide. The stratovolcano rises about 6,000 ft (1,800 m) from the seabed, but the summit is the only part that projects above sea level. (en)
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  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, 31 miles (50 km) behind the main Aleutian volcanic arc. It has a land area of 173 acres (0.70 km2) and is unpopulated. The peak elevation of the island is 490 feet (150 m). It last erupted in 1992. It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a largely submarine stratovolcano located in the Bering Sea in the U.S. state of Alaska, 31 miles (50 km) behind the main Aleutian volcanic arc. It has a land area of 173 acres (0.70 km2) and is unpopulated. The peak elevation of the island is 490 feet (150 m). It last erupted in 2016. It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and 540 metres (0.34 mi) wide. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located along the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 173 acres (0.70 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1.76 kilometres (1.09 mi) long and .05 kilometres (0.031 mi) wide. (en)
  • Bogoslof Island or Agasagook Island (Aleut: Aĝasaaĝux̂) is the summit of a submarine stratovolcano located at the southern edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Island chain. It has a land area of 319.3 acres (1.292 km2) and is uninhabited by people. The peak elevation of the island is 490 feet (150 m). It is 1,040 meters (3,410 ft) long and 1,512 m (4,961 ft) wide. (en)
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