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Metadata
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ID
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F-1-04-TB
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Abstract
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United States Geological Survey, Menlo Park, California.
Chief Scientists: John Chin, USGS Menlo Park, Roberto Anima,
USGS Menlo Park. Geophysical data (234khz, YoNav) of field
activity F-1-04-TB in Tomales Bay, CA from 11/15/2004 to
11/19/2004
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Organization
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United States Geological Survey, Menlo Park, California
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Project/Theme
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Tomales Bay, Habitat Mapping
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Chief Scientist
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John Chin
Roberto Anima
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Activity Type
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Geophysical
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Platform
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Frontier
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Area of Operation
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Tomales Bay, CA
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Location map
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Bounding Coordinates
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38.19268
-122.93189 -122.86112
38.10784
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Dates
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11/15/2004 (JD 320) to 11/19/2004 (JD 324)
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Analog Materials
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No analog holdings.
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Index map
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Information Specialist
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Crew
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John Chin
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USGS, Co Chief Scientist
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Roberto Anima
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USGS, Co Chief Scientist
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Andy Stevenson
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USGS, Information Specialist
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Ellen Phillips
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FACS Coordinator
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Mike Boyle
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USGS, Electronic Technician
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Larry Kooker
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USGS, Electronic Technician
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Gerry O'Brien
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USGS, Small boat handler
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Equipment Used
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Purpose
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Bathymetric, bay floor imaging.
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Conduct sonar surveys in Tomales Bay
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to establish bay and seafloor morphology.
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Establish a baseline of bay floor morphology
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which is essential in determining
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any future changes on the bay bathymetry
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in response to the watersheds that flow into the bay.
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Information to be Derived
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Swath bathymetry, bay floor backscatter image.
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Information from this study will be used to produce a habitat map.
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Notes
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Interferometric swath bathymetry
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[http://woodshole.er.usgs.gov/operations/sfmapping/swath.htm],
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brand SEA Model SWATHplus-M, media digital, code SUBX, 234 khz.
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Yonav GPS nav, media digital, comment WAAS DGPS correction.
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The Tomales Bay Watershed Council
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has voiced a need to begin looking
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at the environmental impacts of human input to the watersheds
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and feels it important to establish an ecological database
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that can be used to make comparisons in the future.
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Surveying would create a framework and this database.
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Tomales Bay marks the trace of the San Andreas Fault and
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is the culmination point of tributaries
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from the Inverness Ridge to the west and the watershed to the east.
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Geologic and anthropogenic changes are occuring
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in the Bays and the impact on habitats is unknown.
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In response to a request from the National Park Service, and
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the Tomales Bay Watershed Council
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[http://www.tomalesbaywatershed.org/]
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to determine the overall morphology of the floor of Tomales Bay,
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the Coastal and Marine Geology Team proposes to map the bathymetry and
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produce a detailed geologic and habitat map of Tomales and Bodega Bays.
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This task is necessary to establish a baseline
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of the bay floor morphology to compare future geologic and
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anthropogenic changes that might occur due to changes
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in land use or development in the surrounding watershed.
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This task will also be of importance
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in determining the possible pathways of pollutants entering the bays
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from the surrounding watersheds.
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Publications
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Anima, R.J., Chin, J.L., Finlayson, D.P., McGann, M.L., and Wong,
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F.L., 2008, Interferometric sidescan bathymetry, sediment and foraminiferal analyses: a new look at Tomales Bay, California, 2007, United States Geological Survey Open File Report 2007-1237, Available on line at:
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http://pubs.usgs.gov/of/2008/1237/
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Got Help?
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For F-1-04-TB, we would appreciate any information on -- analog materials, contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, owner, ports, project number, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
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