U.S. Geological Survey (USGS), 2014, Acoustic Backscatter Data Collected in 2011 - Farallon Escarpment and Rittenburg Bank, Northern California:.This is part of the following larger work.Online Links:
Dartnell, Peter, Cochrane, Guy R., and Finlayson, David P., 2014, Bathymetry, Acoustic Backscatter, and Seafloor Character - Farallon Escarpment and Rittenburg Bank, Northern California: Open-File Report 2014-1234, 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 10.0, 2.0
Ordinates (y-coordinates) are specified to the nearest 10.0, 2.0
Planar coordinates are specified in Meters
The horizontal datum used is NAD83.
The ellipsoid used is GRS80.
The semi-major axis of the ellipsoid used is 6378137.00 meters.
The flattening of the ellipsoid used is 1/0.003352811.
Cell size = 10.0 Number of rows = 2873 Number of columns = 3131 Data type = floating point Boundary Xmin = 462385 Xmax = 493695 Ymin = 4167267 Ymax = 4195997 Statistics Minimum value = 184.26 Maximum value = 255 Mean = 228.64 Standard deviation = 14.85 Coordinate system description Projection UTM Zone 10 Datum NAD83 Units meterThe 2-m Rittenburg Bank backscatter imagery was originally archived as an ESRI grid with the following attributes:
Cell size = 2.0 Number of rows = 3959 Number of columns = 2656 Data type = floating point Boundary Xmin = 468217 Xmax = 473529 Ymin = 4188068 Ymax = 4195986 Statistics Minimum value = 175.66 Maximum value = 231.20 Mean = 313.88 Standard deviation = 3.88 Coordinate system description Projection UTM Zone 10 Datum NAD83 Units meter
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gcochrane@usgs.gov
These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to identify bathymetric features. These data are not intended for navigational purposes.
Person who carried out this activity:
(831) 460-7415 (voice)
pdartnell@usgs.gov
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
Complete
Unspecified
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
USGS-authored or produced data and information are in the public domain. 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 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. 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.
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This database, identified as acoustic backscatter of the Farallon Escarpment and Rittenburg Bank, northern California has been approved for release and publication by the U.S. Geological Survey (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 these data have been processed successfully on a computer system at 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. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. These data are not intended for navigational use.
| Data format: | ASCIIRASTER and geoTIFF |
|---|---|
| Network links: |
https://pubs.usgs.gov/of/2014/1234/ |
(831) 460-7415 (voice)
(831) 427-4709 (FAX)
pdartnell@usgs.gov