Tests of the broadband borehole seismic system (B³S²) at Scripps IGPP and the Pinon Flat Observatory : October 1994 to June 1995

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1997-08Author
Stephen, Ralph A.
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Orcutt, John
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Peal, Kenneth R.
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Vernon, Frank L.
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Austin, Gary
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Bolmer, S. Thompson
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Gould, Matthew R.
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Koelsch, Donald E.
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Hollinshead, C. B.
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Offield, Glen
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Willoughby, David F.
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https://hdl.handle.net/1912/8085DOI
10.1575/1912/8085Abstract
The broadband borehole seismic system (B3S2) is being developed as one
component of the Ocean Seismic Network (OSN) Pilot Experiment which will be carried
out at the OSN-1 Site off Hawaii in Winter 1998. The other major instruments being
developed for the experiment are a Broadband Ocean Bottom Seismometer and a Shallow
Buried Broadband Ocean Bottom Seismometer.
B3S2 consists of four major components: 1) a borehole sonde with a re-entry
guide, Teledyne 54000 broadband seismometer, and REFTEK digitizing system, 2) a
seafloor acquisition and recording system (SEABASS), 3) a control vehicle for deploying
the sonde in a borehole, and 4) shipboard command and control electronics. The
deployment system is very similar to the SEABASS configuration used on LFASE
(Stephen eta!, 1994). The purposes of the tests at Pinon Flat were: 1) to integrate the
borehole sonde and seafloor and shipboard electronics which had been constructed by
different groups: WHOI and SIO/IGPP; 2) test the combined subsystem in a wet borehole
environment using actual cables and simulating seafloor conditions; and 3) acquire seismic
ambient noise and earthquake data over approximately a three month period for comparison
with known stations at the Pinon Flat Observatory.
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Working Paper: Stephen, Ralph A., Orcutt, John, Peal, Kenneth R., Vernon, Frank L., Austin, Gary, Bolmer, S. Thompson, Gould, Matthew R., Koelsch, Donald E., Hollinshead, C. B., Offield, Glen, Willoughby, David F., "Tests of the broadband borehole seismic system (B³S²) at Scripps IGPP and the Pinon Flat Observatory : October 1994 to June 1995", 1997-08, DOI:10.1575/1912/8085, https://hdl.handle.net/1912/8085Related items
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Ambient noise analysis and finite difference modelling of VLF borehole seismic data
Stephen, Ralph A.; Swift, Stephen A.; Bolmer, S. Thompson (Woods Hole Oceanographic Institution, 1987-03)This report describes a preliminary analysis of borehole seismic data to determine VLF/Sub-bottom Seismic Noise in the Atlantic and the preliminary results of finite difference modelling for a Cape Fear environment. Noise ... -
Seafloor borehole array seismic system (SEABASS)
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A sea floor winch system for wire line re-entry of deep sea boreholes
Berteaux, Henri O.; Bocconcelli, Alessandro; Koelsch, Donald E.; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 1990-12)The following report describes the scientific motivations for the use of a Sea Floor Winch System for Wireline Re-entry of Deep Sea Boreholes and presents a conceptual design for the winch system.