March 30, 2007

• Sheveluch Erupted Yesterday

  
  Dramatic umbrella cloud rising to an estimated 10,000 m (33,000 ft)
  above sea level over Sheveluch Volcano on the Kamchatka Peninsula
  during the explosive dome collapse event of March 29, 2007. According
  to observers, a pyroclastic flow accompanied the formation of this
  eruption column and cloud. Photograph taken in the nearby community of
  Klyuchi by Yuri Demyanchuk, Director of the Levinson-Lessing Kamchatkan
  Volcanological Station at Klyuchi (Institute of Volcanology and
  Seismology) and Engineer for the Kamchatkan Branch of Geophysical
  Surveys. — Photo from avo.alaska.edu

  Don’t ask me why, but a few days ago, I started occasionally checking the Alaska Volcano Observatory’s website, expecting something, not sure what.  Yesterday, I was gone to Wasilla all day, so I didn’t find this until this morning.  There is also an impressive overhead image on the site from the Aqua satellite.

  Strong seismicity related to this explosive dome collapse lasted from
  about 0150 to 0215 UTC, according to scientists at the Research
  Laboratory of Seismic and Volcanic Activity, Kamchatkan Branch of
  Geophysical Surveys. Based on information from several sources, the
  cloud eventually reached an altitude well in excess of 10 km (33,000
  ft) and traveled at least 400 km (250 mi) northeast of the volcano.

  AVO is responsible for monitoring Alaskan volcanoes, and also reports on activity on the nearby areas of the Pacific Ring of Fire.  We have four volcanoes currently undergoing “episodes of unrest” in yellow advisory status:  Fourpeaked, Veniaminoff, Cleveland, and Korovin.

  • 2:17 pm
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