Publication Date:
2022-05-26
Description:
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.
Description:
This work was carried out under NSF Grants No. OCE-91-18943 and
OCE No. OCE-95-05730: "A Broadband Borehole Seismometer for the Deep Ocean -
Development and Land Testing"
Keywords:
Seismology
;
Borehole gravity meters
;
Ocean bottom
;
Oceanographic instruments
Repository Name:
Woods Hole Open Access Server
Type:
Working Paper
