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Friday, Oct 24, 2014
AVO reported that, although cloud cover often obscured views of Shishaldin during 15-21 October, seismicity indicated that a low-level eruption was likely continuing. ... [more]
Thursday, Oct 16, 2014
Low-level eruptive activity likely continues at the volcano, AVO writes: "Elevated surface temperatures were detected in satellite data from this morning. Sound waves coupling into the ground (ground-coupled air waves) from small explosions as well as small pulses of tremor are occasionally detected in seismic data." (AVO) [more]

Shishaldin volcano

Stratovolcano 2857 m / 9,373 ft
United States, Aleutian Islands, 54.76°N / -163.97°W
Current status: minor activity or eruption warning (3 out of 5)
Shishaldin webcams / live data
Last update: 24 Oct 2014
Typical eruption style: explosive
Shishaldin volcano eruptions: 2014, 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
TimeMag. / DepthDistanceLocation
Mon, 20 Oct
Mon, 20 Oct 03:17 UTCM 2.4 / 75.7 km39 km48km SSW of False Pass, Alaska
Thu, 25 Sep
Thu, 25 Sep 00:26 UTCM 1.7 / 19.1 km39 km48km SSW of False Pass, Alaska

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

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