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ID
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2010-012-FA
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Also Known As
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M-12-10-GM
2010-012-FA
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Abstract
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United States Geological Survey, Woods Hole, Massachusetts.
Chief Scientist: Dave Twichell. Sea floor mapping; data of
field activity 2010-012-FA (M-12-10-GM) in Gulf of Mexico,
North America, North Atlantic; from 03/01/2010 to 03/17/2010
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Organization |
United States Geological Survey, Woods Hole, Massachusetts
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Chief Scientist
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Dave Twichell
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Activity Type
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Sea floor mapping;
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Platform
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Tommy Munro
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Area of Operation
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Gulf of Mexico, North America, North Atlantic;, Gulf of Mexico
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Bounding Coordinates
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30.75000
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-99.75000 -80.25000 |
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17.25000 |
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Ports
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LEAVE Biloxi, MS
ARRIVE Biloxi, MS
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Dates
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03/01/2010 (JD 060) to 03/17/2010 (JD 076)
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Analog Materials
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No analog holdings.
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Information Specialist
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Crew
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Purpose
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High-resolution seismic, swath bathymetry, and sidescan sonar mapping
of the inner shelf off the Mississippi Barrier islands to map the geologic
framework and assess the extent of offshore sand deposits.
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Information to be Derived
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Sea floor map;Bathymetric maps;Morphology;Stratigraphy
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Summary
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A cruise aboard the R/V Tommy Munro was conducted March 1-17, 2010 by
the Woods Hole Science Center. The purpose of the cruise was to collect
swath bathymetry, sidescan sonar imagery and high-resolution chirp seismic
profiles to define the sea floor morphology and the shallow stratigraphy
of the inner shelf offshore of a string of barrier islands in the northern
Gulf of Mexico along the Mississippi coast. The scientific goals of the
project were twofold: 1) to better understand the geologic evolution of
this coastal region, and 2) to provide stratigraphic information to the
U.S. Army Corps of Engineers for an assessment of sand resources that they
are compiling for the region.
The cruise was hampered by less-than-ideal weather conditions. Data were
collected during the following days: 3-9 March, 11-12 March, 14-16 March.
During the cruise seismic data were collected along 1778 km of survey
tracklines, swath bathymetry along 1418 km of survey tracklines, and
sidescan imagery along 1332 km of survey tracklines. Preliminary
processing was completed in the field on all three data types. The
quality of the chirp and bathymetry data was excellent. During the
initial part of the cruise, the sidescan imagery was of inferior quality
because of ship noise. The location of the sidescan vehicle was moved
from the port side to the stern of the ship during the first port call,
and the quality improved significantly. For the lower quality imagery,
processing procedures were modified to minimize the ship noise.
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Notes
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Platform Owner: University of Southern Mississippi
Days at Sea: 14
Navigation technique: dgps;
Degree of Certainty: 100
Science Strategy: Ecosystems;Hazards;Resources;
Submitted by: Dave Twichell
Report Date: 2010-04-19
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Project Number
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Funding
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US Army Corps of Engineers
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Got Help?
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For 2010-012-FA, we would appreciate any information on -- analog materials, contract, days at sea, dive count, equipment used, kms of navigation, national plan, NGDC Info, owner, project, publications, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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