U.S. Geological Survey, 2008, SeaBossTracklines (Shapefile)- Tracklines for bottom video collected with the SEABOSS Sampler in the Cape Ann - Salisbury Beach survey area.: Open-File Report 2007-1373, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, Massachusetts.This is part of the following larger work.Online Links:
Barnhardt, Walter A. , Andrews, Brian D. , Ackerman, Seth D. , Baldwin, Wayne E. , and Hein, Christopher J. , 2008, High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts.: Open-File Report 2007-1373, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, Massachusetts.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is D_WGS_1984.
The ellipsoid used is WGS_1984.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257224.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
508-548-8700 x2348 (voice)
508-457-2310 (FAX)
bandrews@usgs.gov
This data set includes the tracklines (the linear extent) of bottom video acquired with the large SEABed Observation and Sampling System (SEABOSS) during USGS survey 05005, conducted September 18-20, 2005 aboard the R/V Connecticut. This data set was collected to ground-truth (verify) the geophysical data sets that were acquired immediately preceding this sampling survey (September 8-16, 2005). High resolution digital photographs were also taken along these tracklines (see shapefile BottomPhotos.shp)
Person who carried out this activity:
(508) 548-8700 x2348 (voice)
(508) 457-2310 (FAX)
bandrews@usgs.gov
Person who carried out this activity:
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
Data sources produced in this process:
Person who carried out this activity:
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
Data sources produced in this process:
Person who carried out this activity:
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
Data sources produced in this process:
Person who carried out this activity:
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
Data sources produced in this process:
Person who carried out this activity:
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
Data sources produced in this process:
Blackwood, D., and Parolski, K., 2001, Seabed observation and sampling system: Sea Technology v. 42, no. 2, p. 39-43.
Barnhardt, Walter A. , Andrews, Brian D. , and Butman, Bradford, 2006, High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts: Open-File Report 2005-1293, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
Ackerman, Seth D. , Butman, Bradford, Barnhardt, Walter A. , Danforth, William W. , and Crocker, James M. , 2006, High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts: Open-File Report 2006-1008, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
Navigation for survey 05005 used Real Time Kinematic (RTK) GPS from a base station established by USGS for this survey. RTK-GPS provides horizontal positional accuracies on the decimeter scale. The recorded position of each sediment sample is actually the position of the GPS antenna on the survey vessel, not the SEABOSS sampler. No layback or offset was applied to the recorded position. The SEABOSS was deployed approximately 10 meters astern of the GPS antenna and may drift additionally away from the survey vessel when deployed to the seafloor. Based on the various sources for horizontal offsets, a conservative estimate the horizontal accuracy of the SEABOSS location is 30-40 meters.
The length of the trackline represents the distance along the drift that that bottom was in view on the video. It does not include video of the water column during deployment or retrieval.
Trackline data from all video transects are included in this shapefile.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- The intended scale of these data is 1:25,000. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.
508-548-8700 x2348 (voice)
bandrews@usgs.gov
Downloadable Data
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
| Data format: | tracklines of video collected with the SEABOSS sampler in format SHP (version ArcGIS 9.2) ESRI polyline shapefile Size: 0.3 Mb |
|---|---|
| Network links: |
<https://pubs.usgs.gov/of/2007/1373/GIS/shapefile/SeaBossTracklines.zip> |
| Media you can order: |
DVD-ROM
(Density 4.75
Gbytes)
(format UDF)
|
These data are available as a shapefile in Environmental Systems Research Institute (ESRI) format. To utilize these data, the user must have software capable of viewing ESRI shapefiles. The shapefile is also distributed in compressed format as one WinZip (ver 9.0) file. To utilize these data, the user must be able to uncompress the WinZip file.
508-548-8700 x2315 (voice)
508-457-2310 (FAX)
seth.ackerman@state.ma.us
