|
|
|
|
Metadata
|
|
ID
|
07007
|
|
Also Known As
|
A-1-07-LA
07007
|
|
Abstract
|
United States Geological Survey, Woods Hole, Massachusetts.
Chief Scientist: David Twichell. Data (Navigation-DGPS,
Navigation-Hypack, Seismic reflection-Edgetech 512i,
Sidescan-Klein 3000, Swath bathymetry-SEA Submetrix 2000
interferometric sonar, operated at 234 kHz) of field activity
07007 (A-1-07-LA) in Chandeleur Islands, Louisiana, northern
Gulf of Mexico, United States, North America, North Atlantic
from 06/10/2007 to 06/22/2007
|
|
Organization
|
United States Geological Survey, Woods Hole, Massachusetts
|
|
Project/Theme
|
Northern Gulf Coast Ecosystem Change
|
|
Chief Scientist
|
David Twichell
|
|
Platform
|
Acadiana
|
|
Area of Operation
|
Chandeleur Islands, Louisiana, northern Gulf of Mexico, United States, North America, North Atlantic
|
|
Location map
|
|
|
Bounding Coordinates
|
29.75000
-89.25000 -88.75000
28.33333
|
|
Ports
|
LEAVE Venice, LA
ARRIVE Venice, LA
|
|
Dates
|
06/10/2007 (JD 161) to 06/22/2007 (JD 173)
|
|
Analog Materials
|
No analog holdings.
|
|
Index map
|
|
|
Information Specialist
|
|
|
Crew
|
|
David Twichell
|
Chief Scientist
|
|
Chuck Worley
|
|
Emile Bergeron
|
|
Bill Danforth
|
|
Wayne Baldwin
|
|
|
Equipment Used
|
|
Navigation-DGPS
|
|
Navigation-Hypack
|
|
Seismic reflection-Edgete
|
(ch 512i)
|
|
Sidescan-Klein 3000
|
|
Swath bathymetry-SEA Subm
|
(etrix 2000 interferometric sonar)
|
|
operated at 234 kHz
|
|
|
Purpose
|
|
Seafloor mapping along the offshore side of the southern
|
|
part of the Chandeleur Islands, Gulf of Mexico
|
|
|
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
|
|
subbottom data were collected along 1654 km of tracks.
|
|
|
Notes
|
Navigation technique: DGPS.
|
|
Project number and name: 2921-CNV77 Northern Gulf Coast Ecosystem Change
|
|
14 days at sea.
|
|
2146 kms. of continuous data.
|
|
0 stations occupied.
|
|
|
Funding
|
|
USGS and Louisiana Department of Natural Resources
|
|
|
Got Help?
|
For 07007, we would appreciate any information on -- activity type, crew, information to be derived, equipment used, information specialist, publications, purpose, summary.
|
|
