The Sea Scallop Recruitment Group
This project funded by the Northeast Consortium of Sea Grant institutions.
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Project Abstract
Electronics package schematic Sample image from first test
of camera off Puerto Rico.
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(Above left) SEABED Autonomous Underwater Vehicle (AUV) aboard
New Bedford scallop vessel Kathy Marie, January 2003
AUV being launched from R/V Oceanus, March 2003.
Strobe greatly facilitated spotting and retrieval during night operations
Processed SEABED AUV image on Stellwagen Bank. Note well concealed skate.
Processed SEABED AUV image of boulder pile in Stellwagen. Note small redfish.
These images processed by Ali Can.
Camera sled aboard R/V Oceanus, GS Channel, March 2003. Photo: Scott Gallager.
The first transect generated ~2500 images per hour in the Great South Channel.
Note scallops, cut scallop shells, and exposed glacial till.
Nearby area with experimental color postprocessing, Norman Vine, 5/9/2006
Accessing the images
Due to the large volume of images generated, several methods of access are being explored.
Since each full processed image in JPEG format is about 700k, they are somewhat slow to view
over a telephone modem.
One method that involves using a roughly registered strip of smaller images displayed within a browser window and formatted as an imagemap, that allows the viewer to see contiguous images and select any one for view at full resolution (only the first 4 are activated for this example).
1. Woods Hole Oceanographic GeoBrowser
2. National Ocean Survey Mapserver
3.
National Ocean Survey Caribbean habitat mapping project
Rationale
Here are graphics used in a presentation to the NIST Advanced Technology Program group at the MIT
meeting, November 2000, to describe the need for development of a continuous digital camera survey
system.
The first four items below concern scallop biomass estimations, in particular the need to improve their accuracy. The remainder are substrate related, what information is already available from existing sources. The collaborative project with the Deep Submergence Laboratory at WHOI was developed to address these issues and near future habitat related studies to answer questions related to ongoing offshore 'zoning' or 'Area Management' of fishing industry in Multispecies Amendment 13 and Scallop Amendment 10.
Use the 'BACK' button on your browser or 'Alt + back arrow' keys to return to this screen
1. Areal extent of the Atlantic offshore scallop fishing areas.
2. NMFS scallop survey stations (1998), exact tow locations vary within strata from year to year.
3. Stokesbury drop video sampling strategy from NEFMC Scallop PDT document.
4. Biomass calculations by various
methods used for the Fishery Management Council
decision making process. Red arrows highlight 95% confidence intervals.
5. Sediment sample collection sites, locations
from USGS Open File Report 00-358.
Screen shot of data from the CD plotted in ArcView. Note sparcity in offshore areas.
6. USGS sediment map of Georges Bank/Gulf of Maine region (data from USGS, Poppe, Polloni, CDROM, see item 5 above). Legend attached, gravel in light orange.
7. Higher resolution substrate map along the Northern Edge of Georges Bank. (Valentine, Lough 1990)
8. Multibeam backscatter from Jeffreys
Ledge area of SBNMS, included as an example of the
resolution of 95khz transducers used during a 10knot survey at these depths. (1994-97)
9. Dive locations from National Undersea Research
Center at University of Connecticut at Avery Point,
the largest publicly available
collection of seafloor video imagery. Check their new website.