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Anatahan Volcano Update, July 7-11
July 11, 2003
08:00 A.M. Pacific/Saipan (GMT+10 hours)
The eruption continues to wane, as shown by decreasing amplitudes of
volcanic tremor and our close observations on July 9. On that day,
two passes in the helicopter about 9 hours apart revealed only white
steam low in the east crater and a low amount of light brown fume without
ash emission.
An EMO crew installed a seismic station on Sarigan
Island, about 25 km (22 miles) north of Anatahan, to help with the monitoring
of Anatahan and, ultimately, transmission of seismic data through the
entire length of the arc.
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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