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Metadata
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ID
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A-1-00-SC
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Abstract
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United States Geological Survey, Menlo Park, California.
Chief Scientists: Chris Gutmacher, Stephanie Ross, Brian
Edwards. Geophysical data (12khz, Huntec, uniboom, Geopulse,
minisparker, minisparker, GPS, YoNav, 24channel, sparker) of
field activity A-1-00-SC in Southern California from Port
Hueneme to Mexican Border from 06/05/2000 to 06/29/2000
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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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Southern California Seismic Hazards Project
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Chief Scientist
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Chris Gutmacher
Stephanie Ross
Brian Edwards
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Activity Type
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Geophysical
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Platform
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Auriga
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Area of Operation
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Southern California from Port Hueneme to Mexican Border
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Location map
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Bounding Coordinates
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34.22868
-119.79080 -117.13802
32.58602
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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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06/05/2000 (JD 157) to 06/29/2000 (JD 181)
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Analog Materials
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list
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Index map
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Information Specialist
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Crew
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Chris Gutmacher
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Chief Scientist, Watchstander, USGS Western Region
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Stephanie Ross
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Chief Scientist, Watchstander, USGS Western Region
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Brian Edwards
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Chief Scientist, USGS Western Region
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Larry Kooker
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Electronics Technician, USGS Western Region
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Kevin O'Toole
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Mechanical Technician, USGS Western Region
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Ray Sliter
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Multi-channel Seismic Watchstander, USGS Western Region
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Becky Cooper
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Watchstander Navigation, USGS Western Region
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Pat Hart
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Multi-channel Seismic Watchstander, USGS Western Region
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Jon Childs
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Multi-channel Seismic Watchstander, USGS Western Region
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Dave Gonzales
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Electronics Technician, USGS Western Region
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Jane Reid
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Watchstander, USGS Western Region
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Dave Hogg
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Electronics Technician, USGS Western Region
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Tim Elfers
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Mechanical Technician, USGS Western Region
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Walt Olson
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Mechanical Technician, USGS Western Region
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Martin Uyesugi
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Huntec Engineer Watchstander, Geoforce Consultants
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Annie Douglas
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Mammal Observer, Cascadia Research
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Lisa Baraff
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Mammal Observer, Cascadia Research
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Dave Ellifrit
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Mammal Observer, Cascadia Research
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Todd Chandler
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Mammal Observer Team Leader, Cascadia Research
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Jr Veldink
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Mammal Observer, Cascadia Research
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Dick Corrigan
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Captain, Northwind Shipyards
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Ted Blinkers
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Captain, Northwind Shipyards
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Jeff Stringer
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Mate, Northwind Shipyards
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James Stacey
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Engineer, Northwind Shipyards
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Ricky Labrador
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Cook, Northwind Shipyards
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Rich Soderblom
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Deck Hand, Northwind Shipyards
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Brad Scarrott
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Minisparker Technician, Applied Acoustic Engineering
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Equipment Used
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12khz
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Huntec
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uniboom
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Geopulse
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minisparker
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minisparker
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GPS
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YoNav
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24channel
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sparker
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Purpose
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leg 1: identify fault and landslide hazards in the offshore
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area of Southern California. The study areas were selected to
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(a) obtain multichannel and high-resolution seismic-reflection data
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inside the 3-mile limit between Port Hueneme and the Mexican border; and
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(b) extend data coverage within a relatively unsurveyed segment of the
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margin seaward of the shelf between Dana Point and San Diego,
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California.
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leg 2: to obtain multichannel and high-resolution data in
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Los Angeles/Long Beach harbor and adjacent shelf for study of
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salt-water intrusion in local aquifers.
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Information to be Derived
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Identify and map active and potentially active faults, folds,
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and submarine slide-prone areas that may threaten densely populated
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areas of Southern California. Map pathways of salt-water intrusion
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into local aquifers critical to the large population of the greater
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Los Angeles metropolitan area.
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Summary
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Extensive high-resolution geopulse and huntec data were
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collected within the 3-mile limit and farther seaward in areas
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sparsely surveyed during previous operations, as well as in the
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Los Angeles / Long Beach harbor and adjacent shelf. Problems with
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the minisparker power supplies prevented its use during much of
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the cruise, despite unflagging efforts by the shipboard engineering
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and electronic technicians. In the end, only 36 hours of multichannel
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minisparker data were collected in the harbor/shelf area and an
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additional 10 hours in the shelf and slope area east of Port Hueneme.
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1200 line-km geopulse (960 hazards, 240 aquifers)
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1400 line-km huntec (1300 hazards, 100 aquifers)
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470 line-km minisparker (100 hazards, 370 aquifers)
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Publications
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Gutmacher, Christina E., Normark, William R., Ross, Stephanie L., Edwards,
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Brian, Sliter, Ray, Hart, Patrick, Cooper, Becky, Childs, Jon, and Reid,
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Jane, 2000, Cruise report for A1-00-SC Southern California earthquake hazards
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project, Part A: U.S. Geological Survey Open-File Report 00-516:
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HREF="http://geopubs.wr.usgs.gov/open-file/of00-516">walrus.wr.usgs.gov/reports
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of00-516
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Fisher, Michael, Normark, William, Langenheim, Victoria, Calvert, Andrew
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and Sliter, Ray, 2004, Marine geology and earthquake hazards of the San Pedro
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shelf region, Southern California: U.S. Geological Survey Professional Paper
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1687.
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Got Help?
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For A-1-00-SC, we would appreciate any information on -- contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, notes, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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