Online Links:
PIBHMC, CRED, PIFSC, NOAA and JIMAR
The netCDF grids of backscatter imagery were created using data gathered from multibeam soundings for use as a planning and reference document. The data are also being used for benthic habitat mapping, for locating Essential Fish Habitat, and for studying geologic features of the area. Refer to supplemental information for description of instrument and survey.
In addition to the standard processing routines applied to Reson 8101 backscatter data, a gain correction was applied to 2006 data to address the larger range of intensity values recorded in 2004 compared to 2006. A scaling value for the 2006 data was empirically derived and applied to all the 2006 data.
For more information on the backscatter processing technique see <http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm>. Software_Used: SAIC ISS-2000 Acquisition Software, v 3.4 SAIC SABER Processing Software, v 3.3.15 Hawaii Mapping Research Group (HMRG) Processing Software GMT Generic Mapping Tools, v 4.1 MB System, v 5.0.7
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 purposes. Please acknowledge NOAA and the Joint Institute for Marine and Atmospheric Research (JIMAR) University of Hawaii as the sources of this information.
These data are not to be used for navigational purposes. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Data format: | Binary netCDF Grid: This file is formatted as a 2-D binary netCDF grid file. This is the default grid file format used by GMT (Generic Mapping Tools). The file was created by the HMRG sofware program bsovl. More information about netCDF files can be found at at http://www.soest.hawaii.edu/gmt/ and http://www.unidata.ucar.edu/software/netcdf/. in format netCDF, .grd |
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Network links: |
http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_backscat.htm |