Online Links:
Online Links:
This backscatter imagery layer represents approximately 185 square kilometers of interferometric sonar (Systems Engineering and Assessment Ltd. SWATHPlus-M) backscatter data collected by the U.S. Geological Survey during USGS survey 2013-003-FA in 2013 offshore of Massachusetts, south of Martha's Vineyard and north of Nantucket. These data can be used in conjunction with other geophysical and sample data to identify sea-floor morphology and sediment texture.
JD143 15:20 - JD146 20:06 (no data were collected on JD144 or JD145) JD149 15:40 - JD151 18:59 (no data were collected on JD150) JD153 00:01 - JD153 14:32 JD155 18:16 - JD156 02:06 JD158 06:12 - JD160 19:15 (no data were collected on JD159)
Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:These data are NOT to be used for navigation. Mariners should refer to the appropriate nautical chart. 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 originator of the dataset.
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: | The zip file contains a folder with an 8-bit GeoTIFF image at 1-meter resolution and the associated metadata and world file. in format GeoTIFF (version Global Mapper v17 GeoTIFF) 8-bit GeoTIFF image Size: 106 |
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Network links: |
https://pubs.usgs.gov/of/2016/1168/GIS_catalog/raster/backscatter/2013-003-FA_Backscatter1m.zip https://pubs.usgs.gov/of/2016/1168/ofr2016-1168-data_catalog.html https://doi.org/10.3133/ofr20161168 |
The ZIP file contains an 8-bit GeoTIFF image compressed using the Packbits compression format with a world file. To utilize these data an image processing or GIS software package capable of viewing an 8-bit GeoTIFF image with Packbits compression.