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Metadata
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ID
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J-2-98-SF
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Abstract
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Chief Scientist: Jon Childs. High-Resolution Seismic data
(YoNav, 48channel, 200khz, Geopulse, uniboom,
Seistecprofiler, minisparker) of field activity J-2-98-SF in
San Francisco Bay, CA from 04/06/1998 to 04/10/1998
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Project/Theme
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High-resolution Source Calibration
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National Plan
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Information
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Chief Scientist
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Jon Childs
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Activity Type
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High-Resolution Seismic
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Platform
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David Johnston
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Area of Operation
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San Francisco Bay, CA
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Location map
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Bounding Coordinates
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37.86158
-122.37599 -122.33084
37.73403
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Ports
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leave Redwood City, CA
arrive Redwood City, CA
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Dates
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04/06/1998 (JD 096) to 04/10/1998 (JD 100)
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Analog Materials
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list
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Index map
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Crew
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Jon Childs
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Chief Scientist, USGS Western Region
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Alan Cooper
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Unspecified, USGS Western Region
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Pat Hart
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Unspecified, USGS Western Region
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Larry Kooker
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Unspecified, USGS Western Region
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Tom McGee
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Unspecified, MMS
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Vaughn Goebel
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Unspecified, Lookout Geophysical
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Craig Lippus
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Unspecified, Geometrics
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Gordon Smith
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Captain
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Equipment Used
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YoNav
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48channel
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200khz
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Geopulse
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uniboom
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Seistecprofiler
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minisparker
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Purpose
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Develop calibration methods for high-frequency
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acoustic sources. Collect calibrated profiles over Oakland Bay Bridge
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East span boreholes. Collect 36-channel multi-offset data w/ high-
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frequency sources. Measure near-field source strength and
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attenuation as a function of range and azimuth. Field test data
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acquisition systems to be used on upcoming Gulf of Mexico
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program.
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Notes
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J-2-98-SF System Calibration and Test Cruise
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6-10 April, 1998
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Monday, 4/6
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Meet to discuss objectives for the week;
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finish mobilization at Yerba Buena Island;
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establish data acquisition signal strategy, including Lookout system;
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acquire Geopulse profiles with 3-element and short ITI streamers;
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calibrate (Corps of Engineers method) Geopulse system.
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Tuesday, 4/7
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Acquire Seistec and minisparker profiles;
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calibrate Seistec and minisparker systems;
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test multichannel acquisition with Geopulse.
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Wednesday, 4/8
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Exchange Uniboom and Geopulse sleds;
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acquire Uniboom profile with 3-element and short ITI streamers;
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calibrate Uniboom system;
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acquire multi-offset data with Uniboom source;
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test remote acquisition of Uniboom data with radio trigger.
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Thursday, 4/9
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Measure radiation and attenuation of Uniboom and minisparker systems;
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return to Redwood City.
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Friday, 4/10
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Test watergun from Redwood City pier;
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measure radiation and attenuation of watergun via remote acquisition;
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demobilize.
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Equipment notes: yonav dgps w/ shot control
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2channel: mudseis 2-channel, 16-bit, 51.2 khz
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48channel: geometrics 48-channel strataview w/ marine controller
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4channel: lookout 4-channel,16-bit, 200 khz
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geopulse: geopulse source (single-plate), geopulse amplifier/filter
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uniboom: uniboom source (single plate)
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seistec: ikb seistec source
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minisparker: minisparker source, 1 kj power supply
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receiver: 3-element streamer; 15-element streamer; 12-element iti streamer;
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48-meter, 36-channel iti streamer; model f42b calibrated hydrophone w/ 30 m
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cable signal conditioning kron-hite bandpass filter; tektronix amplifiers;
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bandpass filter; _____ amplifier test equipment storage oscilloscope;
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precision voltmeters (2); hp spectrum analyzer
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Got Help?
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For J-2-98-SF, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, NGDC Info, organization, owner, project number, publications, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
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