|Range of values|
|Units:||Floating point values representing intensity|
Cell size = 5.0 Number of rows = 3522 Number of columns = 3566 Data type = floating point Boundary Xmin = 588830 Xmax = 606660 Ymin = 4077950 Ymax = 4095560 Statistics Minimum value = -55 Maximum value = -8 Mean = -35.91 Standard deviation = 2.39 Coordinate system description Projection UTM Zone 10 Datum WGS84 Units meter
These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify seafloor features.
Are there legal restrictions on access or use of the data?
Use_Constraints:USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
|Data format:||The .zip file for the TIFF image includes the image (.tif), the world registration file (.tfw), .ovr and a color ramp file. The text (.txt), XML (.tif.xml), HTML, and FAQ versions of the metadata for the BackscatterB [EM300] data layer of Offshore Aptos, California are also included in the download. in format GeoTiff (version ArcMap (version 10.0, ESRI , 2011)) Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system with datum WGS84. Size: 0.48|
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF. Users should download the ArcGIS Project File, OffshoreAptosGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Offshore Aptos" and has all the data symbolized as on the data release map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS.