Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia

Journal of Volcanology and Geothermal Research
By: , and 

Links

Abstract

We examine an eruptive sequence in late 2007 at Bezymianny Volcano to characterize the magmatic plumbing system and eruption-related seismicity. Earthquake locations reveal seismicity below and offset to the north of the volcano along a tectonic fault. Based on historical seismicity, the magma chamber is postulated to have a top at about 6 km depth. Minor dome explosions, large sub-plinian eruptions and dome collapses are analyzed using an automated event classification scheme. Low-frequency tremor, interpreted as gas escape, and low-frequency earthquakes are a dominant proportion of the energy released. We also examine multiplet earthquakes whose behavior during the study period changed significantly and systematically before the largest eruption, demonstrating the potential of tracking multiplets to assess changing conditions with the conduit.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia
Series title Journal of Volcanology and Geothermal Research
DOI 10.1016/j.jvolgeores.2010.05.010
Volume 194
Issue 4
Year Published 2010
Language English
Publisher Elsevier
Contributing office(s) Volcano Science Center
Description 13 p.
First page 201
Last page 213
Country Russia
Other Geospatial Bezymianny Volcano