|boulders||Rocky area of the sea floor where avarage gravel exceed 256 mm in diameter|
|bedforms||Large bedforms (sand waves and megaripples) whose relief exceeds 20 cm|
|shell beds||Densely packed, grain-supported, bioclastic layers composed largely of mollusk shells and shell fragments|
To release interpretations of bottom features based on sidescan-sonar and bathymetry data collected during NOAA survey H11346 and sediment samples and bottom photography collected during USGS survey RAFA08012 in Edgartown Harbor, Massachusetts, in a geographic, WGS84 coordinate system.
Are there legal restrictions on access or use of the data?
Use_Constraints:The interpretation was completed at map scales less than 1:10,000, and is not intended for use smaller map scales. 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 the National Oceanic and Atmospheric Administration (NOAA), 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 or NOAA 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:||A zip file containing the geospatial data, metadata, and browse graphic. in format SHP (version ArcGIS 9.2) ESRI polygon shapefile Size: 0.179|
|Media you can order:||DVD-ROM (Density 4.75 Gbytes) (format UDF)|
The user must be capable of uncompressing WinZip files. Also, these data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.