Multibeam data were collected aboard the NOAA Ship Hi'ialakai, a 218' United States National Oceanographic and Atmospheric Administration research ship. The NOAA Ship Hi'ialakai's survey sensors include a 30 kHz Simrad EM300 sonar and a 300 kHz Simrad EM3002d sonar, which provide bathymetry and imagery data, a TSS/Applanix POS/MV Model 320, which measures position, velocity, attitude and heading, and a Seabird SBE 9/11 plus CTD used to measure sound velocity profiles.
Multibeam data were collected aboard the R/V AHI (Acoustic Habitat Investigator), a 25' survey launch owned and operated by the NOAA Pacific Islands Fisheries Science Center in Honolulu, HI. The R/V AHI's survey sensors include a 240 kHz RESON 8101-ER sonar providing bathymetry and imagery data, a TSS/Applanix POS/MV Model 320 which measures position, velocity, attitude and heading, and a Seabird SBE 19 CTD used to measure sound velocity profiles.
Multibeam data were also collected by the Hawaii Underseas Research Laboratory (HURL) aboard the R/V Kaimikai-o-Kanalao (KOK). More information about HURL and the KOK can be found at www.soest.hawaii.edu/hurl.
IKONOS estimated depths were produced using rule-based, semi-automated image analysis of high-resolution satellite imagery for nine locations in the Northwestern Hawaiian Islands.For more information about the estimated depth data see the following online link: http://mercury.ornl.gov/metadata/nbii/html/nos/est%5Fdepth%5Fnwhi.html
Specific equipment configurations are documented in cruise metadata from IKONOS estimated depths and cruises KM0206, HI0501, AHI0501, HI0503, HI0612, AHI0612, HI0804, and AHI0804.
These metadata can be accessed at: http://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/.
Online Links:
Benthic Habitat Mapping Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA and the Joint Institute for Marine and Atmospheric Research (JIMAR), and Hawaii Mapping Research Group (HMRG) University of Hawaii as the sources of this information.
This netCDF was created using data gathered from multibeam soundings and IKONOS estimated depths for use as a planning and reference document. The data were collected to provide information on the 25, 50, and 100 fm contours in the NWHI, which are important for establishing management boundaries for the NWHI Coral Reef Ecosystem Reserve. 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 (Office of Ocean Exploration and the Pacific Islands Fisheries Science Center), the Joint Institute for Marine and Atmospheric Research (JIMAR) University of Hawaii, and Hawaii Mapping Research Group (HMRG) 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, the default grid file format used by GMT (Generic Mapping Tools). More information can found at www.soest.hawaii.edu/gmt and www.unidata.ucar.edu/software/netcdf. in format netCDF, .grd |
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Network links: |
https://www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/zone3/ |