as_pibhmc_swa_40m_hardsoft Pacific Islands Benthic Habitat Mapping Center (PIBHMC) 20160125 Preliminary hard and soft seafloor substrate map derived from an unsupervised classification of multibeam backscatter and bathymetry derivatives at Swains Island, American Samoa. The dataset was created from gridded (40 m cell size) multibeam bathymetry derivatives collected aboard R/V AHI, and NOAA ship Hi'ialakai; two scales of bathymetric variance and bathymetric rugosity. Backscatter data were from a 300 kHz Simrad EM300 and a 240 kHz Reson 8101 sonar, gridded at 5 m. Very limited seafloor photographs for groundtruthing are available for Swains Island and therefore no supervised classification was performed and we are unable to visually or empirically evaluate the accuracy of the unsupervised classification seafloor substrate map. However, in locations such French Frigate Shoals, NWHI, and Tutuila, American Samoa, where ground truth data are available, the unsupervised classification method is a robust predictor of substrate type in similar depth ranges and seafloor environments. Since groundtruthing was not used to validate the unsupervised classification at Swains Island extreme caution should be used when examining these data to locate habitat of biological significance. The map should be used in conjunction with bathymetric derivatives such as rugosity, slope, and Bathymetric Position Index (BPI). PacIOOS provides timely, reliable, and accurate ocean information to support a safe, clean, productive ocean and resilient coastal zone in the U.S. Pacific Islands region. -171.28 -170.861 -10.876 -11.211 http://pacioos.org/metadata/browse/as_pibhmc_swa_40m_hardsoft.png Sample image. PNG GCMD Science Keywords Earth Science > Land Surface > Geomorphology > Coastal Landforms/Processes Earth Science > Oceans > Bathymetry/Seafloor Topography > Hard Seafloor Substrate Earth Science > Oceans > Bathymetry/Seafloor Topography > Soft Seafloor Substrate GCMD Location Keywords Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Swains None Use Limitation: The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. Pacific Islands Benthic Habitat Mapping Center (PIBHMC) physical and mailing

Unknown pibhmc@soest.hawaii.edu The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST). Pacific Islands Ocean Observing System (PacIOOS) physical and mailing

Unknown info@pacioos.org Unknown Open Geospatial Consortium Web Coverage Service (WCS) https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_pibhmc_swa_40m_hardsoft/ows?service=WCS&version=1.0.0&request=GetCapabilities Open Geospatial Consortium Web Map Service (WMS) https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_pibhmc_swa_40m_hardsoft/ows?service=WMS&version=1.3.0&request=GetCapabilities GeoServer This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. https://geo.pacioos.hawaii.edu/geoserver/ FGDC metadata This URL provides additional metadata for this dataset from the source provider. http://geo.pacioos.hawaii.edu/geoserver/www/metadata/as_pibhmc_swa_40m_hardsoft.xml None specified 20260601 Pacific Islands Benthic Habitat Mapping Center (PIBHMC) mailing and physical Unknown pibhmc@soest.hawaii.edu Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002