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Metadata
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ID
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00070
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Also Known As
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00070
ASTR00070
A-70-00-CD
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Abstract
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United States Geological Survey, Woods Hole, Massachusetts.
Chief Scientist: Mike Bothner. Geological data (slowcore,
VanVeengrab, GPS, underwatercamera) of field activity 00070
(A-70-00-CD) in Massachusetts Cape Cod Bay from 08/17/2000 to
08/18/2000
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Organization
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United States Geological Survey, Woods Hole, Massachusetts
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Project/Theme
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Massachusetts Bay Experiment
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Chief Scientist
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Mike Bothner
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Activity Type
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Geological
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Platform
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Asterias
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Area of Operation
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Massachusetts Cape Cod Bay
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Location map
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Bounding Coordinates
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42.43040
-70.40335 -70.00013
41.89833
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Ports
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leave Woods Hole, MA
arrive Woods Hole, MA
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Dates
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08/17/2000 (JD 230) to 08/18/2000 (JD 231)
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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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Mike Bothner
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Chief Scientist, USGS Woods Hole
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Dave Olmstead
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Captain, Asterias
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Mike Casso
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Unspecified, USGS Woods Hole
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Rick Rendigs
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Unspecified, USGS Woods Hole
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M. Santos
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Unspecified, USGS Woods Hole
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Equipment Used
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slowcore
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VanVeengrab
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GPS
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underwatercamera
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Purpose
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Collect cores at long term monitoring stations in Cape Cod Bay. This
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work supports the Outfall Monitoring Program and is scheduled on short notice to
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collect samples before the outfall begins on September 6, 2000.
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Information to be Derived
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Summary
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Collected cores at the stations 6 and 7. Collected 3 Van-Veen grab
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samples at station 8. Samples from all 3 stations were gamma counted for
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radio-isotopes.
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Notes
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Hydro wire (3/16 inch) was used at station 8 where water depth is 200m.
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This wire parted on the second deployment of the slow corer. Although the wire
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looked good and was tested (at the bitter end) and found to be of rated strength
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(3500 ?), it parted on the return trip from the bottom on the second cast. No
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evidence for a kink or a problem with the shieve. I learned later that the wire
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was at least 10 years old (predated Olmstead) so perhaps there was hidden
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corrosion. Next time, insist on a safety factor of 5 when lowering equipment to
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the bottom.
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Got Help?
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For 00070, we would appreciate any information on -- analog materials, contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, owner, project number, publications, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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