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SI/USGS Weekly Volcano Activity Report for 7/1-7/2009

The latest round-up of volcano news, including the potential spotting of a dome growing at Sarychev Peak, rumblings in El Salvador and small ash plumes at Anak Krakatau.
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All the volcano news that is fit to print, all thanks to the USGS/Smithsonian GVP!

Highlights (not include Manda Hararo, Kilauea and Mayon) include

  • San Miguel in El Salvador has been experiencing increased seismicity. The last time the volcano erupted was in 2002.
  • A pilot spotted a ~10,000 foot / 3 km ash plume emanating from Anak Krakatau in Indonesia.
  • Another ash plume, this time at Ubinas, Peru, was spotted by pilots rising to ~6.7-9.1 km / 20-30,000 feet.
  • Explosions were heard from Suwanose-jima in Japan, but no associated ash plumes were spotted.
  • It sounds like a lava dome has been spotted at Sarychev Peak in the Kuril Islands of Russia. An “intense thermal anomaly” was noted at the summit in satellite images and gas/steam plumes have been seen each day. However, no new ash plumes have been noticed since June 16.
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