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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 04/05/1998 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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Bounding Coordinates
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37.86158
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-122.37599 -122.33084 |
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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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04/05/1998 (JD 095) to 04/10/1998 (JD 100)
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Analog Materials
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list
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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
acoustic sources. Collect calibrated profiles over Oakland Bay Bridge
East span boreholes. Collect 36-channel multi-offset data w/ high-
frequency sources. Measure near-field source strength and
attenuation as a function of range and azimuth. Field test data
acquisition systems to be used on upcoming Gulf of Mexico
program.
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Notes
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J-2-98-SF System Calibration and Test Cruise
6-10 April, 1998
Monday, 4/6
Meet to discuss objectives for the week;
finish mobilization at Yerba Buena Island;
establish data acquisition signal strategy, including Lookout system;
acquire Geopulse profiles with 3-element and short ITI streamers;
calibrate (Corps of Engineers method) Geopulse system.
Tuesday, 4/7
Acquire Seistec and minisparker profiles;
calibrate Seistec and minisparker systems;
test multichannel acquisition with Geopulse.
Wednesday, 4/8
Exchange Uniboom and Geopulse sleds;
acquire Uniboom profile with 3-element and short ITI streamers;
calibrate Uniboom system;
acquire multi-offset data with Uniboom source;
test remote acquisition of Uniboom data with radio trigger.
Thursday, 4/9
Measure radiation and attenuation of Uniboom and minisparker systems;
return to Redwood City.
Friday, 4/10
Test watergun from Redwood City pier;
measure radiation and attenuation of watergun via remote acquisition;
demobilize.
Equipment notes: yonav dgps w/ shot control
2channel: mudseis 2-channel, 16-bit, 51.2 khz
48channel: geometrics 48-channel strataview w/ marine controller
4channel: lookout 4-channel,16-bit, 200 khz
geopulse: geopulse source (single-plate), geopulse amplifier/filter
uniboom: uniboom source (single plate)
seistec: ikb seistec source
minisparker: minisparker source, 1 kj power supply
receiver: 3-element streamer; 15-element streamer; 12-element iti
streamer;
48-meter, 36-channel iti streamer; model f42b calibrated hydrophone w/ 30 m
cable signal conditioning kron-hite bandpass filter; tektronix
amplifiers;
bandpass filter; _____ amplifier test equipment storage oscilloscope;
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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