Anatahan Volcano Update
Anatahan Volcano Update for April 25, 2004
Submitted Sunday, April 25, 2004 at 0900 local Anatahan time
Anatahan seismic activity increased abruptly at 0052 4/24 UTC
(1052 4/24 CNMI) to a high level unseen since summer 2003, marking a
significant increase in Anatahan's eruptive activity from quiet effusion
of small amounts of lava to a more energetic eruption. The eruptive
activity now appears to be as energetic as some of the eruptions of
mid-June 2003. Seismic activity
continues to increase steadily at the time of this report. Reports
from a local helicopter about 0600 4/24 UTC (1600 4/24 CNMI) indicated a
plume below an altitude of 4000 ft (1200 m) extending north-northwest of
the island.
The next seismic update will be at 0300 4/25 UTC, 1600 4/25 CNMI.
Contact persons:
Juan Takai Camacho, Geophysical Seismic Technician, EMO Saipan; tel:
(670) 322-9528, fax: (670) 322-7743, email: juantcamacho@hotmail.com
Ramon Chong, Geophysical Instrument Specialist, EMO Saipan; tel: (670)
322-9528, fax: (670) 322-7743, email: rcchongemo@hotmail.com
Frank Trusdell, Geologist, USGS; tel: (808) 967-8812, fax: (808) 967-8890,
email: trusdell@usgs.gov
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