Additional data were collected aboard the NOAA Ship Oscar Elton Sette, a 224'(68 m) United States National Oceanographic and Atmospheric Administration research ship. The NOAA Ship Sette's survey sensors included a 240-kHz pole- mounted Reson 8101ER sonar, which provides multibeam bathymetry and backscatter imagery data, a TSS/Applanix POS/MV Model 320, which measures position, velocity, attitude and heading, and a Seabird SBE19 CTD used to measure sound velocity profiles.
Specific equipment configurations are documented in metadata from cruises: AHI0702, SE1002.
These metadata can be accessed at: http://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/.
Online Links:
PIBHMC, CRED, PIFSC, NOAA and JIMAR
The GeoTIFFs and 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.
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 Reson 8101 backscatter files and bounding coordinates: galvez-8101-8-01 W/E/S/N: 144.42/144.49/13.10/13.12 galvez-8101-8-02 W/E/S/N: 144.41/144.48/13.01/13.07 galvez-8101-8-04 W/E/S/N: 144.37/144.44/12.97/13.03 galvez-8101-8-05 W/E/S/N: 144.42/144.50/13.20/13.26 in format GeoTIFF, .tif |
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Network links: |
ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/backscatter/Gal_1m_backscat.zip |