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Metadata
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ID
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J-3-94-SF
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Abstract
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Chief Scientist: John Chin. Geological and Geophysical data
(Kleinsidescan) of field activity J-3-94-SF in San Francisco
Bay from 06/07/1994 to 06/16/1994
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Chief Scientist
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John Chin
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Activity Type
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Geological and Geophysical
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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
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Location map
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Bounding Coordinates
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37.80467
-122.38233 -122.10750
37.49596
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Dates
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06/07/1994 (JD 158) to 06/16/1994 (JD 167)
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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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John Chin
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Chief Scientist, USGS Western Region
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Equipment Used
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Purpose
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The primary purpose of the cruise was to obtain high resolution side-scan sonar imagery, bathymetry, and box cores to supplement previously collected data with the aim of producing an interpretive map of bottom types for the South Bay.
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Summary
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The Klein and Mudseis systems were utilized to obtain digital imagery
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in three primary areas that had been previously mapped: 1) the main tidal
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channel with its sedimentary furrows; 2) the shallow area east of San Bruno
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Shoal with its variety of bottome types; and 3) the deep area east of Hunters
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Point running north to the Bay Bridge which has light and darktonal patches.
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Results from this cruise showed that the bottom morphologies had changed very
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little since previously mapped. In particular, the furrows observed nearly 10
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years ago in the main tidal channel are still present and are still aligned with
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their axes parallel to the channel axis. The dark tonal patches near Hunters
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Point appear to be due to the presence of scattered and discontinuous coarse
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debris disseminated in a matrix of mud and sand sediment.
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Publications
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Marlow, Michael S., Anima, Roberto J., Carlson, Paul R., Childs, P.R., Hart, P.E.,
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Jachens, P.E., Mann, R.C., and Sliter, R.W., 1995, San Leandro Basin; a filled sedimentary
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basin beneath South San Francisco Bay: American Association of Petroleum Geologists
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Bulletin, v. 79, no. 4, p. 592.
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Got Help?
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For J-3-94-SF, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, NGDC Info, notes, organization, owner, ports, project, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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