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This backscatter intensity mosaic was created as a single image of the acoustic reflectivity of the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. Generally, higher backscatter values (light tones) represent rock, boulders, cobbles, gravel, and coarse sand. Lower values (dark tones) usually represent fine sand and muddy sediment. In this final form and at the input resolutions, these data helped define the sediment texture and distribution maps presented as interpretive data layers in USGS OFR 2018-1181.
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Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
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 U.S. Geological Survey 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: | Backscatter mosaic (8-bit unsigned integer) in GeoTIFF image format at 5 meter resolution, with world file and the associated metadata. in format GeoTIFF (version ArcGIS v. 10.5.1 GeoTIFF) 8-bit gray-scale GeoTIFF Size: 7.78 |
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Network links: |
https://www.sciencebase.gov/catalog/item/5bfd6022e4b0815414ca39cf https://www.sciencebase.gov/catalog/file/get/5bfd6022e4b0815414ca39cf https://doi.org/10.5066/P9E9EFNE |
Data format: | 8-bit GeoTIFF Backscatter mosaic provided through a WCS (web coverage service). in format WCS |
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Network links: |
https://www.sciencebase.gov/catalogMaps/mapping/ows/5aff069be4b0da30c1bfcdcc?service=wcs&request=getcapabilities&version=1.0.0 https://www.sciencebase.gov/catalog/item/5aff069be4b0da30c1bfcdcc https://doi.org/10.5066/P9E9EFNE |
Data format: | 8-bit GeoTIFF backscatter mosaic provided through a WMS (web mapping service). in format WMS |
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Network links: |
https://www.sciencebase.gov/catalogMaps/mapping/ows/5aff069be4b0da30c1bfcdcc?service=wms&request=getcapabilities&version=1.3.0 https://www.sciencebase.gov/catalog/item/5aff069be4b0da30c1bfcdcc https://doi.org/10.5066/P9E9EFNE |
The image is available as a LZW compressed GeoTIFF with a world file. To utilize this data, the user must have an image viewer, or an image processing or GIS software package capable of importing a TIFF image.