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ALASKA VOLCANO OBSERVATORY
CURRENT STATUS REPORT
Tuesday, January 11, 2005 3:30 PM AST (January 12, 0030 UTC)
ALASKA VOLCANOES WITH ELEVATED COLOR CODES:
MOUNT VENIAMINOF VOLCANO (CAVW #1102-07)
56°10'N 159°23'W, Summit Cone Elevation 7,073 ft (2,156 m)
Current Level of Concern Color Code: ORANGE
Previous Level of Concern Color Code: YELLOW
Web camera views show that small ash emissions from the intracaldera cone
of Mount Veniaminof, some reaching nearly 13,000 ft (3692 m) above sea
level, have occurred more or less continuously over the last 72 hours.
Seismicity remains at elevated levels, though the amplitude has diminished
slightly in the last 24 hours. Satellite images continue toshow a thermal
anomaly in the vicinity of the cone.
A field crew from AVO today reports no evidence of lava flows or large
ballistics from the cone.
Very weak volcanic tremor was observed starting on January 1, 2005. Since
then, the magnitude of the volcanic tremor has increased significantly and
there have been frequent (> 1 per minute) small volcanic earthquakes. As
of this writing, seismic activity is nearly continuous; the frequency of
seismic events exceeds that recorded during steam emissions and ash
emissions from April to October, 2004, however the overall amplitude
remains about the same. We expect that steam and ash emissions may continue
and could pose a hazard to people and low- to medium-flying aircraft in the
vicinity of the active cone. Small ash falls outside of the summit caldera
MOUNT SPURR VOLCANO (CAVW#1103-04)
61°18' N 152°15' W, Summit Elevation 11,070 ft (3,374 m)
Current Level of Concern Color Code: YELLOW
Elevated levels of seismicity continue to be recorded beneath Mount Spurr.
No activity was visible in clear views of the volcano by satellite and web
camera today. There are no indications that an eruption is imminent.
VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
Tom Murray, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
John Eichelberger, Coordinating Scientist, UAF-GI
email@example.com (907) 474-5530
The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.