LFASE borehole array data acquisition and reduction summary
Bolmer, S. Thompson
Swift, Stephen A.
Stephen, Ralph A.
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On the Low Frequency Acoustic - Seismic Experiment (LFASE), carried out at DSDP hole 534A in August, 1989, WHOI was responsible for acquiring data from a twelve channel borehole seismic array. Data were acquired both on-board while tethered to the array and autonomously in a seafloor package. Seismic source data (explosives and airguns) and ambient noise data were recorded. This report describes the nature of data acquired, reviews the data reduction procedure from field format to ROSE data format, and includes examples of the data. A total of918.6 Mbytes of data were acquired (769 Mbytes in the shipboard recording mode and 149.6 Mbytes in the seafloor recording mode). Approximately 85 explosive shots, 2000 airgun shots, and 10 hours of ambient noise data were recorded.
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Stephen, Ralph A.; Koelsch, Donald E.; Berteaux, Henri O.; Bocconcelli, Alessandro; Bolmer, S. Thompson; Cretin, J.; Etourmy, N.; Fabre, A.; Goldsborough, Robert G.; Gould, Matthew R.; Kery, Sean M.; Laurent, J.; Omnes, G.; Peal, Kenneth R.; Swift, Stephen A.; Turpening, R.; Zani, A. Cleo (Woods Hole Oceanographic Institution, 1993-01)The Seafloor Borehole Array Seismic System (SEABASS) has been developed to measure the pressure and three dimensional particle velocity of the VLF sound field (2-50HZ) below the seafloor in the deep ocean (water depths ...
Progress report on the development of the seafloor borehole array seismic system (phase II) : July 14, 1992 to January 31, 1996 Stephen, Ralph A.; Peal, Kenneth R.; Bolmer, S. Thompson; Gould, Matthew R.; Koelsch, Donald E.; Orcutt, John A.; Vernon, Frank L.; Offield, G.; Willoughby, David F.; Hollinshead, C. B.; Spiess, Fred N.; Hildebrand, John A.; Zimmerman, Richard; Austin, Gary (Woods Hole Oceanographic Institution, 1996-06)The Seafloor Borehole Array Seismic System (SEABASS) was originally developed to record autonomously on the seafloor the signals received on a four-sonde three-component borehole geophone array in the VLF band (2-50Hz)(Stephen ...
Bocconcelli, Alessandro; Berteaux, Henri O.; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 1991-10)The Low Frequency Acoustic Seismic Experiment (LFASE) was conducted to measure sound propagation and ambient noise above, at and below the sea floor. To this end an array consisting of four geophone nodes was introduced ...