Mount Okmok is a volcano on eastern Umnak Island, in the central-eastern Aleutian Islands of Alaska. Part of the Aleutian Volcanic Arc, it was formed by the subduction of the oceanic …

2020年6月26日 · Scientists have long suspected that a massive volcanic eruption caused the two-year-long cold snap. And now, researchers have identified the volcano responsible: Mount …

2021年12月10日 · The deposits, referred to as the Okmok Volcanics (Byers, 1959 [2] , p. 314), are mainly thick, non-sorted agglomerate at the caldera rim overlain by ash-flow tuffs, and …

2020年6月29日 · The new study combines evidence from ice cores, tree rings and historical records to identify an eruption of Alaska’s Okmok volcano in 43 B.C. as the cause of unusual …

Mount Okmok, situated in the Aleutian Islands of Alaska, is a prominent stratovolcano known for its spectacular eruptions, its unique geological features, and its impact on the surrounding …

Additional ash plumes observed on satellite imagery and spotted by pilots rose to altitudes of 4.6-6.1 km. On this day a photograph taken from an Alaska Airlines jet captured an impressive …

Mount Okmok is a volcano on eastern Umnak Island, in the central-eastern Aleutian Islands of Alaska. Part of the Aleutian Volcanic Arc, it was formed by the subduction of the oceanic …

Okmok is one of the most active volcanoes in the Aleutian island chain (Alaska). It consists of a complex of shields truncated by a caldera and several active vents inside the caldera, which …

Sea cliff exposures on the north, east, and south flanks of the volcano show where the pyroclastic flow advanced into the sea in these directions.

The highest point of the modern Okmok Caldera is along the caldera’s northern rim, 967 m in elevation, and formally named “Mount Okmok” (U.S. Board on Geographic Names, …