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News
Shishaldin volcano yesterday (image: AVO)
Thursday, Jun 25, 2020
The Alaska Volcano Observatory (AVO) reported that the seismicity at the volcano has decreased to background levels. Satellite views over the past few weeks suggest typical background surface temperatures and light steaming at the summit and no signs of new volcanic activity within the crater. ... [more]
Elevated surface temperature visible from satellite (image: Sentinel 2)
Wednesday, May 06, 2020
The Alaska Volcano Observatory (AVO) reported that unrest continues at the volcano. A satellite image shows gas-steam plume containing some amount of ash extending a short distance southeast from the summit. ... [more]
 

Shishaldin volcano

Stratovolcano 2857 m / 9,373 ft
Aleutian Islands, Alaska, 54.76°N / -163.97°W
Current status: normal or dormant (1 out of 5)
Shishaldin webcams / live data | Reports
Shishaldin volcano books
Last update: 25 Jun 2020 (decreased seismicity; Volcanic Alert Level lowered to Normal)
Typical eruption style: explosive
Shishaldin volcano eruptions: 2014-15, 2008 (?), 2004, 2002, 2000, 1999, 1997, 1995, 1993, 1986-87, 1981 (?), 1979, 1978, 1976, 1975, 1967, 1963, 1955, 1953, 1951, 1948, 1946-47, 1932, 1929, 1928, 1927, 1925, 1922, 1912 (?), 1901, 1899 (?), 1898, 1897 (?), 1883, 1880-81, 1865 (?), 1842, 1838, 1830, 1927-29, 1826, 1825, 1824, 1790 (?), 1775-78 No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

The beautifully symmetrical volcano of Shishaldin is the highest and one of the most active volcanoes of the Aleutian Islands. The 2857-m-high, glacier-covered volcano is the westernmost of three large stratovolcanoes along an E-W line in the eastern half of Unimak Island. The Aleuts named the volcano Sisquk, meaning "mountain which points the way when I am lost." A steady steam plume rises from its small summit crater. Constructed atop an older glacially dissected volcano, Shishaldin is Holocene in age and largely basaltic in composition. Remnants of an older ancestral volcano are exposed on the west and NE sides at 1500-1800 m elevation. Shishaldin contains over two dozen pyroclastic cones on its NW flank, which is blanketed by massive aa lava flows. Frequent explosive activity, primarily consisting of strombolian ash eruptions from the small summit crater, but sometimes producing lava flows, has been recorded since the 18th century.
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Smithsonian / GVP volcano information

Shishaldin Photos:




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See also: Sentinel hub | Landsat 8
 

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