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Caplan-Auerbach & Duennebier 2001

Caplan-Auerbach, J. and Duennebier, F. (2001). Seismic and acoustic signals detected at Lo'ihi Seamount by the Hawai'i Undersea Geo- Observatory. Geochemistry Geophysics Geosystems 2. doi: 10.1029/2000GC000113. issn: 1525-2027.

The Hawai`i Undersea Geo-Observatory (HUGO) is an ocean bottom observatory located on the summit of Lo`ihi seamount, Hawai`i. An electro-optical cable connects the HUGO junction box to a shore station on the Big Island of Hawaii, thereby enabling the first real-time monitoring of a submarine volcano. HUGO was active for 3 months in 1998, collecting nearly continuous, real-time data on a high-rate hydrophone. Signals detected during that time include local as well as teleseismic earthquakes, T phases from Pacific-wide earthquakes, landslides on the submarine flank of Kilauea, and eruption sounds from the current Kilauea eruption. The data do not indicate a Lo`ihi eruption during the time that HUGO was active. The variety and quality of signals detected by the HUGO hydrophone confirms that a real-time observatory can serve a valuable role in studies of oceanic acoustics, local and teleseismic earthquakes, and submarine eruption mechanics.

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Keywords
Marine Geology and Geophysics, Marine Geology and Geophysics, Instruments and techniques, Oceanography, General, Ocean acoustics, Seismology, Volcano seismology

Journal
Geochemistry Geophysics Geosystems

Publisher
American Geophysical Union
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