cred_1m_backscatter_rose_netcdf eng; USA utf8 dataset Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) 808 725-5360 808 725-5429 NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu HI 96818 nmfs.pic.credinfo@noaa.gov e-mail preferred pointOfContact 2024-12-15 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 row 6520 column 7668 vertical 1 area World Geodetic System 1984 WGS 84 2007-08-27 revision https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information resourceProvider European Petroleum Survey Group https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search publisher urn:ogc:def:crs:EPSG::4326 CRED Reson 8101 multibeam backscatter data from the lagoon environment at Rose Island, American Samoa, South Pacific with 1 meter resolution in netCDF format 2007-05-01 publication Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) originator DIGITAL DATA Multibeam backscatter imagery extracted from gridded bathymetry of Rose Island, American Samoa, South Pacific These data provide coverage between 20 and 5000 meters. The backscatter dataset includes data collected using Simrad EM300 and Reson 8101 multibeam sonars. The sonars frequencies are 30 kHz and 240 kHz respectively and the backscatter data from each sonar are processed and gridded separately. These metadata are for the 1 m grid cell size Reson 8101 multibeam backscatter data only. 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. PIBHMC, CRED, PIFSC, NOAA and JIMAR completed Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) 808 725-5360 808 725-5429 NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu HI 96818 nmfs.pic.credinfo@noaa.gov e-mail preferred pointOfContact asNeeded https://www.soest.hawaii.edu/pibhmc/amsamoa_images/rose-bs_440.jpg Multibeam Backscatter Acoustic Imagery JPEG https://www.soest.hawaii.edu/pibhmc/amsamoa_images/rose-8101-bs_440.jpg Multibeam Backscatter Acoustic Imagery JPEG CoRIS_Metadata theme NCEI Geoportal Filter Benthic Habitat Mapping and Characterization - American Samoa and PRIA 1084 project CRCP Project Geographic Information > Backscatter theme CoRIS Discovery Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Backscatter theme CoRIS Theme Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > Rose Atoll (14S168W0001) COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Atoll (14S168W0001) place CoRIS Place Thesaurus AmSam place CoRIS Region 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. otherRestrictions 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. otherRestrictions Access Constraints: None unclassified Not applicable Not applicable grid eng; USA oceans imageryBaseMapsEarthCover Native Dataset Environment: netCDF file created using HMRG software in a LINUX environment -168.176635 -168.131605 -14.563367 -14.525078 2006-03-05 2006-03-08 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 multibeam bathymetry and backscatter 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. Specific equipment configurations are documented in metadata from cruises: AHI0602. These metadata can be accessd at: https://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/. Entity and Attribute Overview: Sidescan data within a GSF file are arranged as small sequences of intensity values, one sequence per beam per ping. The intensity values represent the amplitude of echo returns to the sensor and can be related to seabed roughness. Entity and Attribute Detail Citation: none netCDF, .grd none Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) 808 725-5360 808 725-5429 NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu HI 96818 nmfs.pic.credinfo@noaa.gov e-mail preferred distributor None http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_rose_backscat.htm download dataset Horizontal Positional Accuracy Report Horizontal positioning system: GPS (SPS) Horizontal position accuracy: 25 meters Vertical Positional Accuracy Report 1 m Range resolution of sonar ~1.25 cm Raw sounding resolution: Variable Vertical accuracy of gridded product: 1% of water depth Complete These data are believed to be logically consistent though no tests were performed Science Applications International Corporation_s (SAIC) ISS-2000 acquires, processes and records data, provides survey control and underway quality control displays. SAIC_s SABER processing software is used to process the raw soundings, analyze the results, manually edit the sounding data to remove outliers and derive average gridded data values. Additional data acquisition and processing information can be found in the metadata for cruises AHI0602. Hawaii Mapping Research Group (HMRG) processing software was then used to extract values of acoustic intensity from the soundings. HMRG is an organization of scientists, engineers and technicians whose mission is to design, build, and operate tools for mapping the seafloor. HMRG is a group within the School of Ocean and Earth Science and Technology at the University of Hawaii at Manoa. The gsf2bs program (July, 2005) converts the swath bathymetry ping records contained within a GSF (Generic Sensor Format) version 2.02 dataset into bs file format. This is done as follows: (i) position each beam's bottom detect intensity sample at the across-track location of that beam's bathymetry value; (ii) assuming a flat bottom in the near neighborhood of the beam, compute across-track distances for all of the beam's remaining intensity samples based on their temporal relation to the bottom detect sample and the computed average sound velocity for that beam as derived from its range and travel time; (iii) after all of the intensity samples from all beams of a ping have been located in across-track distance, fill the gaps between them as necessary by comparing travel times of beams adjacent to the gap, assigning the position using the adjacent sample closest to nadir, and averaging the interpolated values that fall within a cell. The conversion described above is necessary in order to run HMRG backscatter processing operations on the data, such as filtering to remove noise, and to create netCDF grids, raster images and GeoTIFF's. 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 2007-04-11T00:00:00 otherRestrictions Metadata Access Constraints: None otherRestrictions Metadata Use Constraints: None annually This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2016-01-11 version of the FGDC RSE to ISO 19115-2 transform. Translated from FGDC 2025-03-24T13:32:51.842Z Last Metadata Review Date: 2009-01-12 Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) 808 725-5360 808 725-5429 NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu HI 96818 nmfs.pic.credinfo@noaa.gov e-mail preferred pointOfContact