Field Activity 2007-007-FA

Identifier 2007-007-FA
Purpose Sea floor mapping along the offshore side of the southern part of the Chandeleur Islands, Gulf of Mexico.
Location Chandeleur Islands, Breton Sound, Louisiana, northern Gulf of Mexico, United States, North America, North Atlantic;
Summary This two-week cruise aboard the R/V ACADIANA collected bathymetric, sidescan sonar and chirp seismic data along the offshore side of the southern half of the Chandeleur Island chain of eastern Louisiana. The survey was coordinated with additional surveys conducted by the R/V GILBERT and a University of New Orleans vessel that collected bathymetric and seismic data near the islands and along the back side of the island chain. The purposes for collecting these data were (1) to provide a detailed post-Katrina bathymetry, (2) to study the processes that have shaped the sea floor in an effort to better understand the effects of Hurricane Katrina, and (3) to understand the influence of the underlying stratigraphy on the sea floor geology. The offshore geophysical dataset was collected on a grid of lines spaced 100 m apart in the shore parallel direction and 1000 m apart in the shore normal direction. Submetrix swath bathymetric data and Klein sidescan sonar imagery were collected along 2146 km of tracks and EdgeTech 512i chirp sub-bottom data were collected along 1654 km of tracks.
Comments Original Center People field contained: Electronics technicians - Chuck Worley and Emile Bergeron; sea floor mapping processors - Bill Danforth and Wayne Baldwin. Project = Northern Gulf Coast Ecosystem Change, Northern Gulf Coast Ecosystem Change
URL
Platform
Acadiana
Length 58 feet
Itinerary
Start Venice, LA 2007-06-10
End Venice, LA 2007-06-22
Days in the field 14
Bounds
West -89.31
East -88.81
North 29.73
South 29.36

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators David C Twichell
Crew members
William W Danforth
Scientist, Staff
Wayne E Baldwin
Scientist, Staff
Emile Bergeron
Scientist, Staff
Charles R Worley
Scientist, Staff
Information specialist(s)
Wayne E Baldwin
Specialist, Information

Data types and categories

Data category: Location-Elevation, Seismics, Sonar
Data type: Navigation, Sub Bottom Profiler, Sidescan, Interferometric, Multibeam

Equipment and datasets

Equipment or measuring device
DGPS
Navigation
(no data)
(No data records have been reported for this equipment)

Description and usage history of this equipment

Edgetech chirp subbottom profiler 512i
Sub Bottom Profiler
1
Chirp seismic data(37891)
Format SEGY
Digital location http://cmgds.marine.usgs.gov/data/2007_007_FA/
SD digital location http://woodshole.er.usgs.gov/operations/ia/DataHoldings_Detail.php?fa=07007,http://pubs.usgs.gov/of/2008/1195/
Supported? Yes
Public? Yes
Reviewed? Yes
Process? No
Public URL http://cmgds.marine.usgs.gov/data/2007_007_FA/
Metadata https://cmgds.marine.usgs.gov/metadata/whcmsc/segy/07007_segy.xml
Contact

Description and usage history of this equipment

Klein 3000
Sidescan
1
Sidescan mosaic(23133)
Format GeoTIFF
Digital location http://pubs.usgs.gov/of/2008/1195/html/gis.html
SD digital location http://pubs.usgs.gov/of/2008/1195/
Supported? Yes
Public? Yes
Reviewed? Yes
Process? No
Public URL http://pubs.usgs.gov/of/2008/1195/html/gis.html
Metadata https://cmgds.marine.usgs.gov/metadata/whcmsc/gomex/centgulf/ChandeleurIslands/mosaic_07007.tif.xml
Contact

Description and usage history of this equipment

SEA SWATHplus-M 234 kHz
Interferometric
1
Bathymetry GIS data(23132)
Format ESRI grid
Digital location http://pubs.usgs.gov/of/2008/1195/html/gis.html
SD digital location http://pubs.usgs.gov/of/2008/1195/
Supported? Yes
Public? Yes
Reviewed? Yes
Process? No
Public URL http://pubs.usgs.gov/of/2008/1195/html/gis.html
Metadata https://cmgds.marine.usgs.gov/metadata/whcmsc/gomex/centgulf/ChandeleurIslands/bathy_grd_asc.asc.xml
Contact

Description and usage history of this equipment

Publications

Samples collected during this field activity

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