Dartnell, Peter, Erdey, Mercedes D., Kvitek, Rikk G., and Bretz, Carrie K., 2014, Backscatter D [7125]--Offshore of San Francisco, California:.This is part of the following larger work.
Cochrane, Guy R., Johnson, Samuel Y., Dartnell, Peter, Greene, H. Gary, Erdey, Mercedes D., Golden, Nadine E., Hartwell, Stephen R., Endris, Charles A., Mansion, Michael W., Sliter, Ray W., Kvitek, Rikk G., Watt, Janet T., Ross, Stephanie L., and Bruns, Terry R., 2015, California State Waters Map Series--Offshore of San Francisco Map Area, California: Open-File Report OFR 2015-1068, U.S. Geological Survey, Reston, VA.Online Links:
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 2.0
Ordinates (y-coordinates) are specified to the nearest 2.0
Planar coordinates are specified in Meters
The horizontal datum used is WGS84.
The ellipsoid used is WGS84.
The semi-major axis of the ellipsoid used is 6378137.00 meters.
The flattening of the ellipsoid used is 1/298.257223563.
Cell size = 2.0 Number of rows = 8845 Number of columns = 8850 Data type = floating point Boundary Xmin = 533700 Xmax = 551400 Ymin = 4172360 Ymax = 4190050 Statistics Minimum value = 2 Maximum value = 255 Mean = 152.87 Standard deviation = 24.94 Coordinate system description Projection UTM Zone 10 Datum WGS84 Units meterThe 2007 Reson 8101 acoustic-backscatter grid was originally archived as an ESRI grid with the following attributes:
Cell size = 2.0 Number of rows = 8845 Number of columns = 8850 Data type = floating point Boundary Xmin = 533700 Xmax = 551400 Ymin = 4172360 Ymax = 4190050 Statistics Minimum value = 39 Maximum value = 254 Mean = 108.43 Standard deviation = 22.19 Coordinate system description Projection UTM Zone 10 Datum WGS84 Units meterThe 2008 Reson 8101 acoustic-backscatter grid within San Francisco Bay was originally archived as an ESRI grid with the following attributes:
Cell size = 2.0 Number of rows = 8845 Number of columns = 8850 Data type = floating point Boundary Xmin = 533700 Xmax = 551400 Ymin = 4172360 Ymax = 4190050 Statistics Minimum value = 1 Maximum value = 254 Mean = 159.38 Standard deviation = 48.60 Coordinate system description Projection UTM Zone 10 Datum WGS84 Units meterThe 2006 Reson 7125 acoustic-backscatter grid was originally archived as an ESRI grid with the following attributes:
Cell size = 2.0 Number of rows = 8845 Number of columns = 8850 Data type = floating point Boundary Xmin = 533700 Xmax = 551400 Ymin = 4172360 Ymax = 4190050 Statistics Minimum value = 2 Maximum value = 254 Mean = 154.52 Standard deviation = 25.03 Coordinate system description Projection UTM Zone 10 Datum WGS84 Units meter
(831) 460-7415 (voice)
(831) 427-4709 (FAX)
pdartnell@usgs.gov
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. These data are not intended to be used for navigation.
Person who carried out this activity:
(831) 582-4197 (voice)
carrie_bretz@csumb.edu
Person who carried out this activity:
(831) 460-7415 (voice)
pdartnell@usgs.gov
Not applicable for raster data.
Estimated to be no less than 2 m, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
Not applicable to acoustic-backscatter imagery.
Complete
Unspecified
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Please recognize the U.S. Geological Survey (USGS) and California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB). USGS-authored or produced data and information are in the public domain. This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
(831) 460-7415 (voice)
(831) 427-4709 (FAX)
pdartnell@usgs.gov
