gov.noaa.nmfs.inport:35021 eng UTF8 dataset GIS dataset of raster files Pacific Islands Fisheries Science Center 808-725-5300 1845 Wasp Blvd. Honolulu HI 96818 USA https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 8:00 a.m. - 4:30 p.m. resourceProvider Akridge, Michael W (808)725-5483 1845 Wasp Blvd. Honolulu HI 96818 USA michael.akridge@noaa.gov pointOfContact DesRochers, Annette M (808)725-5461 1845 Wasp Blvd. Honolulu HI 96818 USA annette.desrochers@noaa.gov 8 am - 5 pm Email preferred pointOfContact 2026-04-30T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Hard and Soft Bottom Seafloor Substrate Maps Derived from an Unsupervised Classification of Gridded Backscatter at Select U.S. Locations in the Pacific Hard Soft Substrate: Pacific (backscatter h/s) 2016 publication NOAA/NMFS/EDM 35021 https://www.fisheries.noaa.gov/inport/item/35021 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information NOAA Coral Reef Conservation Program (301) 713-3155 1305 East West Highway 10th Floor Silver Spring MD 20910-3281 https://coralreef.noaa.gov WWW:LINK-1.0-http--link NOAA Coral Reef Conservation Program Website Link to the NOAA Coral Reef Conservation Program website information originator Pacific Islands Fisheries Science Center 808-725-5360 1845 Wasp Blvd. Honolulu HI 96818 USA pifsc.info@noaa.gov https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Pacific Islands Fisheries Science Center Website Pacific Island Fisheries Science Center homepage information 8:00 a.m. - 4:30 p.m. originator https://www.coris.noaa.gov/search/rest/find/document?searchText=title%3Ahard%20AND%20title%3Asoft%20AND%20CRED%20AND%20NOT%20(ESA%20OR%20%22West%20Hawaii%22)&start=1&max=500&f=georss&dojo.preventCache=1489495789632 WWW:LINK-1.0-http--link Citation URL Coral Reef Information System (CoRIS) Geoportal GeoRSS feed containing all metadata records associated with this catalog item. download https://www.soest.hawaii.edu/pibhmc/index.htm WWW:LINK-1.0-http--link Citation URL Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website. All data are accessible through this website. download mapDigital Substrate, Hard bottom vs. Soft bottom: This is a preliminary product. Cell values reflect whether the seafloor is hard bottom or soft bottom based on an unsupervised classification run using ArcGIS software with the Spatial Analyst extension. The classifications are based on backscatter, bathymetry, acoustic derivatives and optical data. Please see the individual metadata records for additional information on sources used and data processing steps for each location where data are available. The hard and soft seafloor map is being used to improve sampling techniques for long-term ecosystem monitoring, to guide future ground-truthing operations and to identify coral-rich and species specific environments. This is a preliminary product and the methods used to generate the map are currently being evaluated for their accuracy. PIFSC Coral Reef Ecosystem Program completed Akridge, Michael W (808)725-5483 1845 Wasp Blvd. Honolulu HI 96818 USA michael.akridge@noaa.gov pointOfContact DesRochers, Annette M (808)725-5461 1845 Wasp Blvd. Honolulu HI 96818 USA annette.desrochers@noaa.gov 8 am - 5 pm Email preferred pointOfContact Suka, Rhonda (808)725-5494 1845 Wasp Blvd. Honolulu HI 96818 USA rhonda.suka@noaa.gov Email preferred custodian notPlanned 467 Benthic Habitat Mapping and Characterization in the Pacific Islands Region Mapping and EcoSpatial Information Products to Support Coral Reef Ecosystem Management in the Pacific Islands Region theme CRCP Project Geographic Information > Bathymetry Geographic Information > Habitats theme CoRIS Discovery Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs earth science > oceans > bathymetry/seafloor topography > Hard Soft Substrate earth science > oceans > bathymetry/seafloor topography > bathymetry theme CoRIS Theme Thesaurus Hard Soft Substrate theme NODC DATA TYPES THESAURUS surface measurements theme NODC OBSERVATION TYPES THESAURUS Coral Reef Conservation Program theme NODC PROJECT NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program theme NODC SUBMITTING INSTITUTION NAMES THESAURUS COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003) COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003) place CoRIS Place Thesaurus Equatorial Pacific Ocean Marianas Trench Marine National Monument NW Pacific North Pacific Ocean Pacific Remote Islands Marine National Monument Papahanaumokuakea Marine National Monument Rose Atoll Marine National Monument South Pacific Ocean place NODC SEA AREA NAMES THESAURUS SEA FLOOR stratum Global Change Master Directory CRED CREP Coral Reef Ecosystem Division Coral Reef Ecosystem Program PIFSC Pacific Islands Fisheries Science Center theme American Samoa CNMI Commonwealth of the Northern Mariana Islands Guam MHI Main Hawaiian Islands Mariana Islands Marianas NWHI Northwestern Hawaiian Islands PRIA Pacific Remote Island Areas West Hawaii place DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Geomorphology project InPort otherRestrictions Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: Hard and Soft Bottom Seafloor Substrate Maps Derived from an Unsupervised Classification of Gridded Backscatter at Select U.S. Locations in the Pacific [Data Date Range], https://www.fisheries.noaa.gov/inport/item/35021. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: These data are not to be used for navigation purposes. Please cite PIFSC Ecosystem Sciences Division(ESD) when using the data. Suggested citation: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, 2019: Hard and Soft Bottom Seafloor Substrate Maps Derived from an Unsupervised Classification of Gridded Backscatter at Select U.S. Locations in the Pacific, https://www.fisheries.noaa.gov/inport/item/35021. otherRestrictions Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. unclassified Not applicable Not applicable eng; US elevation Hard and Soft substrate classifications were derived from gridded multibeam bathymetry, and backscatter data where available, using the ArcGIS Iso Cluster Unsupervised Classification tool to create a GeoTIFF file. Main Hawaiian Islands, including... West Hawaii and Niihau. -156.100504 -155.822838 19.772429 20.061727 West Hawaii -160.292237 -160.01701 21.729768 22.056916 Niihau West Hawaii multibeam bathymetry collection dates. Rugosity values were derived from this data. | Currentness: Ground Condition 2012-06-09 2012-06-29 Niihau multibeam bathymetry collection dates. Rugosity values are derived from this data. | Currentness: Ground Condition 2005-06-13 2005-07-08 Northwestern Hawaiian Islands, including.... French Frigate Shoals. -166.40391 -165.99713 23.546877 23.923072 French Frigate Shoals Mariana Archipelago including.... Guam and the Northern Mariana Islands, including Saipan, Pagan, and Tinian. 144.326 145.84 12.761 18.19 American Samoa including ...... Tutuila, Manu'a (Ofo, Olosega, and Ta'u) Islands, and Rose Atoll Marine National Monument and the National Marine Sanctuary of American Samoa including Swains Island. -171.2186230908 -168.131605 -14.604747 -10.934991 Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact WWW:LINK-1.0-http--link NCEI Contact Information Information for contacts at NCEI. information distributor ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/gua-unspv-hardsoft-5m.zip WWW:LINK-1.0-http--link gua-unspv-hardsoft-5m.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(TIF), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Guam that includes specific details for the island about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/sai-unspv-hardsoft-5m.zip WWW:LINK-1.0-http--link sai-unspv-hardsoft-5m.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(TIF), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Saipan that includes specific details for the island about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/pag-unspv-hardsoft-10m.zip WWW:LINK-1.0-http--link pag-unspv-hardsoft-10m.zip Zip file containing 10-meter substrate data---Hard bottom vs. Soft bottom---(TIF), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Pagan that includes specific details for the island about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/tut-em32d-unspv-5m.zip WWW:LINK-1.0-http--link tut-em32d-unspv-5m.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom (Simrad em3002d data)---(TIF), maps (PDF and JPG), and metadata (TXT) specifically for Tutuila that includes details about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/tut-re8101-unspv-5m.zip WWW:LINK-1.0-http--link tut-re8101-unspv-5m.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom (Reson 8101 Data)---(TIF), maps (PDF and JPG), and metadata (TXT) specifically for Tutuila that includes details about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/OO_5m_hardsoft.zip WWW:LINK-1.0-http--link OO_5m_hardsoft.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Ofu and Olosega islands that includes specific details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/tau_5m_hardsoft.zip WWW:LINK-1.0-http--link tau_5m_hardsoft.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Ta'u that includes specific details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Rose_40m_HardSoft.zip WWW:LINK-1.0-http--link Rose_40m_HardSoft.zip Zip file containing 40-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Rose Atoll that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Rose_5m_HardSoft.zip WWW:LINK-1.0-http--link Rose_5m_HardSoft.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Rose Atoll that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Swains_40m_hardsoft.zip WWW:LINK-1.0-http--link Swains_40m_hardsoft.zip Zip file containing 40-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Swains that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/Apra_5m_Hardsoft.zip WWW:LINK-1.0-http--link Apra_5m_Hardsoft.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(ASC), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Apra Harbor, Guam that includes specific details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/tin-unspv-hardsoft-5m.zip WWW:LINK-1.0-http--link tin-unspv-hardsoft-5m.zip Zip file containing 5-meter substrate data---Hard bottom vs. Soft bottom---(TIF), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for Tinian that includes specific details for the island about the methods, data quality, sources, etc. download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/Niihau_mb_hs.zip WWW:LINK-1.0-http--link Niihau_mb_hs.zip Zip file containing substrate data---Hard bottom vs. Soft bottom derived from multibeam bathymetry---(ASC), maps (PDF and JPG), and metadata (TXT) specifically for Ni'ihau that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/NII_wv2_hs.zip WWW:LINK-1.0-http--link NII_wv2_hs.zip Zip file containing substrate data---Hard bottom vs. Soft bottom derived from WorldView-2 satellite image based bathymetry---(ASC), maps (PDF and JPG), and metadata (TXT) specifically for Ni'ihau that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster). download ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/FFS_5m_Hardsoft.tif.zip WWW:LINK-1.0-http--link FFS_5m_Hardsoft.tif.zip Zip file containing substrate data---Hard bottom vs. Soft bottom---(TIF), maps (PDF and JPG), ArcGIS Layer file (LYR) and metadata (TXT) specifically for French Frigate Shoals that includes specific details about the methods, data quality, sources, etc. download dataset Representativeness Hard and Soft substrate classifications are primarily derived from gridded bathymetry data and backscatter data that is collected from a number of NOAA vessels using multibeam sonars. This multibeam data may be synthesized with other data including LiDAR bathymetry and Ikonos or WorldView satellite image derived bathymetry. Multibeam data collection targets waters from 20 meters to 500 meters depth. LiDAR and satellite derived bathymetry target waters less than 20 meters depth. The goal of all data collection is to collected data over the entire seafloor within the 0-500 meter depth range. Accuracy Horizontal positioning system: GPS C/A Horizontal position accuracy: 25 meters Range resolution of sonar: varies with depth Raw sounding resolution: varies with depth Vertical accuracy of gridded product ~ 1% of water depth Completeness Report Hard and Soft substrates were determined for all areas where gridded bathymetry data were available. Some gaps exist in bathymetry coverage due to hazardous conditions that prohibited access for the NOAA vessels or to limited time or funding resources. Conceptual Consistency Multibeam bathymetry data were collected by different NOAA vessels using the same collection methods. All multibeam data processing was conducted in the same manner by the Coral Reef Ecosystem program. All bathymetry synthesis data used as source data for the products generated for the Main Hawaiian Islands were processed in the same manner by the Hawaii Mapping Research Group. The method to develop the geomorphological data layers are generally described on the Pacific Islands Benthic Habitata Mapping Center website at https://www.soest.hawaii.edu/pibhmc/pibhmc_mapping.htm#geomorph. otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None