Seismic and acoustic signals detected at Lo`ihi Seamount by the Hawai`i Undersea Geo-Observatory
Abstract
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.
- Publication:
-
Geochemistry, Geophysics, Geosystems
- Pub Date:
- May 2001
- DOI:
- 10.1029/2000GC000113
- Bibcode:
- 2001GGG.....2.1024C
- Keywords:
-
- Lo`ihi seamount; Hawai`i; submarine observatory; hydroacoustic monitoring; marine instrumentation; earthquake location.;
- Lo'ihi seamount;
- Hawai'i;
- submarine observatory;
- hydroacoustic monitoring;
- marine instrumentation;
- earthquake location