Online Links:
PIBHMC, CRED, PIFSC, NOAA and JIMAR
The GeoTIFFs 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: | TIFF is a format for storage, transfer, display, and printing of raster images. The TIFF file structure allows both the tag and the image data to be encoded into the same file. GeoTIFF refers to a TIFF file that has geographic data embedded as tags within the TIFF file. The geographic data can be used to position the image in the correct location and geometry on the screen of a geographic information display. Any GIS, CAD, Image Processing, Desktop Mapping and other types of systems using geographic images can read any GeoTiff file. More specifically, files of this type can be added to ArcInfo and ArcView 8.x or higher and may be viewed in the Table of Contents as a new raster layer. Image visualization software that does not use geography as a basis for image placement can view a GeoTIFF image as if there were no geographic information in the TIFF file. For example, GeoTIFF files can be viewed using Windows Picture and Fax viewer. The GeoTIFF format is public domain, non-proprietary. List of Tutuila 8101 backscatter GeoTIFF files and bounding coordinates: tutuila-8101-8-01.01.00m.ss.tif W/E/S/N -170.917/-170.473/-14.3833/-14.2076 tutuila-8101-8-02.01.00m.ss.tif W/E/S/N -170.817/-170.473/-14.3167/-14.191 tutuila-8101-8-03.01.00m.ss.tif W/E/S/N -170.917/-170.473/-14.3165/-14.1909 tutuila-8101-8-04.01.00m.ss.tif W/E/S/N -170.883/-170.533/-14.3916/-14.191 tutuila-8101-8-05.01.00m.ss.tif W/E/S/N -170.917/-170.562/-14.3833/-14.1993 tutuila-8101-8-06.01.00m.ss.tif W/E/S/N -170.883/-170.496/-14.3223/-14.1909 tutuila-8101-8-07.01.00m.ss.tif W/E/S/N -170.817/-170.473/-14.3499/-14.1909 tutuila-8101-8-08.01.00m.ss.tif W/E/S/N -170.817/-170.523/-14.3167/-14.2076 tutuila-8101-8-09.01.00m.ss.tif W/E/S/N -170.856/-170.496/-14.3833/-14.1909 tutuila-8101-8-10.01.00m.ss.tif W/E/S/N -170.917/-170.562/-14.375/-14.191 tutuila-8101-8-11.01.00m.ss.tif W/E/S/N -170.746/-170.523/-14.35/-14.2472 tutuila-8101-8-12.01.00m.ss.tif W/E/S/N -170.833/-170.473/-14.3916/-14.2472 tutuila-8101-8-13.01.00m.ss.tif W/E/S/N -170.883/-170.473/-14.3917/-14.1994 tutuila-8101-8-14.01.00m.ss.tif W/E/S/N -170.917/-170.473/-14.3917/-14.1909 tutuila-8101-8-15.01.00m.ss.tif W/E/S/N -170.917/-170.523/-14.3833/-14.2472 in format GeoTIFF, .tif |
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Network links: |
http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_backscat.htm |