gov.noaa.nmfs.inport:12617 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 DesRochers, Annette M (808)725-5461 1845 Wasp Blvd. Honolulu HI 96818 USA annette.desrochers@noaa.gov 8 am - 5 pm Email preferred pointOfContact Akridge, Michael W (808)725-5483 1845 Wasp Blvd. Honolulu HI 96818 USA michael.akridge@noaa.gov pointOfContact 2026-03-04T19:17:26 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean BPI Structures 2018 publication NOAA/NMFS/EDM 12617 https://www.fisheries.noaa.gov/inport/item/12617 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information 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.soest.hawaii.edu/pibhmc/cms/ WWW:LINK-1.0-http--link Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website All data described herein are accessible through this website. download https://www.arcgis.com/home/item.html?id=b0d0be66fd33440d97e8c83d220e7926 WWW:LINK-1.0-http--link Benthic Terrain Modeler for ArcGIS Benthic Terrain Modeler, tools for understanding and classifying the benthic environment. download https://www.coris.noaa.gov/search/rest/find/document?searchText=PIBHMC%20AND%20BPI%20AND%20title%3Astructures&start=1&max=500&f=georss&dojo.preventCache=1489091526010 WWW:LINK-1.0-http--link Coral Reef Information System (CoRIS) Geoportal GeoRSS feed Coral Reef Information System (CoRIS) Geoportal GeoRSS feed containing all metadata records associated with this catalog item (view list via Internet Explorer). download https://coast.noaa.gov/digitalcoast/tools/btm WWW:LINK-1.0-http--link Benthic Terrain Modeler by NOAA Office for Coastal Management Digital Coast. download mapDigital Weiss, A. D. 2001. Topographic positions and landforms analysis (Conference Poster). ESRI International User Conference., San Diego, CA July 9–13. https://www.jennessent.com/downloads/tpi-poster-tnc_18x22.pdf Bathymetric Position Index (BPI) Structures are derived for islands and banks across the U.S. Pacific Islands Region from a focal mean analysis on bathymetry and slope, and were created using the Benthic Terrain Modeler. Cell values represent one of 13 classes in an index of seafloor terrains. The grids are based primarily on gridded multibeam bathymetry collected aboard NOAA Ships Hi'ialakai and Oscar Elton Sette and aboard R/V AHI (Acoustic Habitat Investigator) from 2003 to 2012 by the PIFSC Ecosystem Sciences Division (ESD). Other sources of available data used to derive BPI Zones for a few locations include estimated depths derived from IKONOS satellite imagery from 2000 to 2002, LIDAR data from 2001 and 2007, and multibeam bathymetry collected in 2001 and 2002. The BPI Structure grid generated for each location is available via the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website. The data, maps, layer files, and detailed documentation (more specific than this pacific-wide record) about the data sources and data processing steps used are included in the zip file for each location. Prepared by the PIFSC Ecosystem Sciences Division (ESD) and funded by the NOAA Coral Reef Conservation Program (CRCP), the data were derived in support of CRCP goals to map all U.S. coral reef ecosystems by developing high-resolution benthic maps to characterize priority reefs and associated habitats. This derivative of bathymetry provides a GIS layer that may be used for benthic and essential fish habitat characterization, and for the study of geologic features. By combining the dataset with bathymetry, backscatter, other derivatives, and in situ data, they collectively compose benthic habitat maps which are designed to be used to understand and predict benthic habitats for different organisms that inhabit coral reef ecosystems. These maps were made possible with funding from the CRCP, and additional support was received from the NOAA Habitat Blueprint for the West Hawaii Focus Area. PIFSC Ecosystem Sciences Division and funded by the NOAA Coral Reef Conservation Program (and the NOAA Habitat Blueprint for West Hawaii) completed DesRochers, Annette M (808)725-5461 1845 Wasp Blvd. Honolulu HI 96818 USA annette.desrochers@noaa.gov 8 am - 5 pm Email preferred pointOfContact Akridge, Michael W (808)725-5483 1845 Wasp Blvd. Honolulu HI 96818 USA michael.akridge@noaa.gov pointOfContact Acoba, Tomoko S (808)725-5448 1845 Wasp Blvd. Honolulu HI 96818 USA tomoko.acoba@noaa.gov 8:00 am - 4:00 pm HST email preferred custodian notPlanned Updated the 50-m product for Wake Atoll in 2018 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 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 > Bathymetry/Seafloor Topography > Bathymetric Position Index Structures EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs theme CoRIS Theme Thesaurus seafloor topography theme NODC DATA TYPES THESAURUS GIS product derived products 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 theme NODC SUBMITTING INSTITUTION NAMES THESAURUS COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Northern Mariana Islands ( CNMI ) (18N146E0000) COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000) COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Brooks Banks (24N166W0002) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Kure Atoll (28N178W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Northwestern Hawaiian Islands (28N178W0000) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001) COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001) COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027) COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Baker Island (00N176W0001) COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Howland Island (00S176W0001) COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Johnston Atoll (16N169W0001) COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Wake Atoll (19N167E0001) OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Baker Island > Baker Island (00N176W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Howland Island > Howland Island (00S176W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Johnston Atoll > Johnston Atoll (16N169W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands (28N178W0000) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Brooks Banks (24N166W0002) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Kure Atoll (28N178W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Wake Atoll > Wake Atoll (19N167E0001) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000) OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Archipelago > Northern Mariana Islands ( CNMI ) (18N146E0000) 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 BPI Bathymetric Position Index CRED CREP Coral Reef Ecosystem Division Coral Reef Ecosystem Program ESD Ecosystem Sciences Division Habitat Blueprint Habitat Focus Area PIBHMC PIFSC Pacific Islands Benthic Habitat Mapping Center Pacific Islands Fisheries Science Center Seafloor 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). 2025. GCMD Keywords, Version 22. 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]: Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean [Data Date Range], https://www.fisheries.noaa.gov/inport/item/12617. 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 (2018). Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean. Pacific Islands Benthic Habitat Mapping Center, https://www.fisheries.noaa.gov/inport/item/12617. [access date] 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 Bathymetric Position Index (BPI) Zones Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean NOAA/NMFS/EDM 12616 crossReference Dominant Benthic Structure and Biological Cover Habitat Maps for West Maui and West Hawaii NOAA/NMFS/EDM 32811 crossReference Hard and Soft Bottom Seafloor Substrate Map Derived from an Unsupervised Classification of Gridded Bathymetry Derivatives for the NOAA Habitat Blueprint West Hawaii Focus Area NOAA/NMFS/EDM 12618 crossReference Hard and Soft Bottom Seafloor Substrate Maps Derived from an Unsupervised Classification of Gridded Backscatter at Select U.S. Locations in the Pacific NOAA/NMFS/EDM 35021 crossReference Multi beam bathymetry and backscatter synthesis for the Main Hawaiian Islands (5 meter resolution) NOAA/NMFS/EDM 31636 crossReference Rugosity Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean NOAA/NMFS/EDM 12615 crossReference Scleractinian Coral Cover Maps Derived from Classified in situ Seafloor Imagery for Select U.S. Locations in the Pacific from 2001 to 2015 NOAA/NMFS/EDM 33579 crossReference Slope Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean NOAA/NMFS/EDM 12614 crossReference NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 12617 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/12617.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US elevation Bathymetric Position Index Structures were derived from gridded bathymetry using the Benthic Terrain Modeler (BTM). Spatial reference: Universal Transverse Mercator (UTM), zone varies by location. See maps and/or individual metadata found in each location's zip file in the distribution information section for specific cell size and spatial reference (UTM zone) information. 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 Time frame for multibeam data collected by NOAA CREP included in the bathymetry grid used to derived slope for Ni'ihau. Mapping missions include HI0504 and AHI0504. | Currentness: Ground Condition 2005 Time frame for multibeam data collected by NOAA CREP included in the bathymetry grid used to derived slope for West Hawaii. Mapping mission includes SB1207. | Currentness: Ground Condition 2012 Northwestern Hawaiian Islands, including French Frigate Shoals, Pearl and Hermes Atoll, Brooks Banks and Kure Atoll. -178.378433 -166.11682 23.62792 28.453633 Time frame for satellite-derived estimated depths included in the bathymetry grids used to derived slope for Kure (2000-2001) and Pearl and Hermes (2001) | Currentness: Ground Condition 2000 2001 Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for Kure, Pearl and Hermes, Brooks Banks, and French Frigate Shoals. Mapping missions include HI0501, AHI0501, HI0503, HI0507, HI0609, AHI0609, HI0612, AHI0612, HI0804, and AHI0804. | Currentness: Ground Condition 2005 2008 Mariana Archipelago including Guam, Rota, Tinian, Saipan, Pagan, Asuncion, Supply Reef, Sarigan, Guguan, Farallon de Pajaros, Alamagan, Agrihan, Galvez, Farallon de Medinilla, and Maug. 144.62592 145.81568649 13.24126317 20.03570278 Time frame for LiDAR data collected by NAVOO included in the bathymetry grids used to derived slope for Guam, Saipan and Tinian | Currentness: Ground Condition 2001 Time frame for multibeam data collected by NOAA CREP (except where noted otherwise) included in the bathymetry grids used to derived slope for several locations in the Mariana Archipelago. Mapping missions include: 2003: AHI0307 to Guam, Rota, Tinian, and Saipan 2007: AHI0702 and HI0702 to Guam, Rota, Saipan and Tinian. 2007: AHI0703 and HI0703 to Saipan, Tinian, Sarigan, Guguan, Alamagan, Pagan, Agrihan, Asuncion, Maug, Supply Reef, and Farallon de Pajaros. 2008: Apra Harbor, Guam (collected by the Naval Oceanographic Office and NOAA Office of Coast Survey) 2010: SE1002 to Guam, Rota, Galvez Bank, and Farallon de Medinilla. | Currentness: Ground Condition 2003 2010 Time frame for LiDAR data collected by JALBTCX included in the bathymetry grid used to derived slope for Guam. | Currentness: Ground Condition 2007 Time frame for satellite-derived estimated depths included in the bathymetry grid used to derived slope for Tinian. | Currentness: Ground Condition 2000 2002 Pacific Remote Islands Marine National Monument (PRIMNM), also known as the Pacific Remote Island Areas, including Baker, Howland, and Wake islands, and Johnston atoll. 166.59824 -159.97264 -0.38235459 19.31627096 Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for the several locations in the Pacific Remote Island Areas. Mapping missions include: 2006: Mission HI0601 and AHI0601 to Howland, Baker and Johnston 2007: Mission HI0701 and AHI0701 to Wake | Currentness: Ground Condition 2006 2007 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 Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for the several locations in American Samoa. Mapping missions include: 2004: Mission AHI0402 to Tutuila and the Manu'a (Ofo, Olosega and Ta'u) 2006: Mission AHI0602 and HI0602 to Tutuila, Rose and Swains | Currentness: Ground Condition 2004 2006 Time frame for satellite-derived estimated depths included in the bathymetry grids used to derived slope for the Manu'a (Ofo, Olosega and Ta'u) and Rose Atoll. | Currentness: Ground Condition 2002 Time frame for additional multibeam data included in the bathymetry grid used to derived slope for Tutuila. | Currentness: Ground Condition 2001 2002 The source bathymetry data collected and gridded by PIFSC Ecosystem Sciences Division (ESD) are documented and hosted separately on the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website. 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 Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip Zip RAR Archive RAR Zip Zip Zip Zip Zip Zip Zip Zip RAR Archive RAR Zip Zip Zip Zip Zip Zip RAR Archive RAR Lichowski, Frances (808)725-5476 1845 Wasp Blvd. Honolulu HI 96818 USA frances.lichowski@noaa.gov email preferred distributor ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/WestHawaii_BPIstructures.zip WWW:LINK-1.0-http--link WestHawaii_BPIstructures.zip Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), and ArcGIS layer (LYR) for West Hawaii, Main Hawaiian Islands, as well as the pacific-wide metadata data (XML). 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_5m_BPIStructures.zip WWW:LINK-1.0-http--link Nii_5m_BPIStructures.zip Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) 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/cnmi-guam/benthichabitatlayers/pagan_10m_BPIstructures.zip WWW:LINK-1.0-http--link pagan_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), and metadata (TXT) specifically for Pagan 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/cnmi-guam/benthichabitatlayers/agrihan_10m_BPIstructures.zip WWW:LINK-1.0-http--link agrihan_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Agrihan 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/cnmi-guam/benthichabitatlayers/asuncion_10m_BPIstructures.zip WWW:LINK-1.0-http--link asuncion_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Agrihan 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/cnmi-guam/benthichabitatlayers/maug_10m_BPIstructures.zip WWW:LINK-1.0-http--link maug_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Maug 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/cnmi-guam/benthichabitatlayers/supply_10m_BPIstructures.zip WWW:LINK-1.0-http--link supply_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Supply Reef 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/FDP_10m_BPIstructures.zip WWW:LINK-1.0-http--link FDP_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Farallon de Pajaros 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_BPIstructures.zip WWW:LINK-1.0-http--link FFS_5m_BPIstructures.zip Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for French Frigate Shoals 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/kure_5m_BPIstructures.zip WWW:LINK-1.0-http--link kure_5m_BPIstructures.zip Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Kure 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/ph_5m_BPIstructures.zip WWW:LINK-1.0-http--link ph_5m_BPIstructures.zip Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Pearl and Hermes Atoll 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/Brooks_5m_BPIStructures.zip WWW:LINK-1.0-http--link Brooks_5m_BPIStructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Brooks Bank 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/Brooks_20m_BPIStructures.zip WWW:LINK-1.0-http--link Brooks_20m_BPIStructures.zip Zip file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Brooks Bank 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/cnmi-guam/benthichabitatlayers/guam_5m_BPIstructures.zip WWW:LINK-1.0-http--link guam_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guam 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/cnmi-guam/benthichabitatlayers/guam_60m_BPIstructures.zip WWW:LINK-1.0-http--link guam_60m_BPIstructures.zip Zip file containing 60-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guam 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/cnmi-guam/benthichabitatlayers/rota_5m_BPIstructures.zip WWW:LINK-1.0-http--link rota_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Rota 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/cnmi-guam/benthichabitatlayers/rota_60m_BPIstructures.zip WWW:LINK-1.0-http--link rota_60m_BPIstructures.zip Zip file containing 60-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Rota 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/cnmi-guam/benthichabitatlayers/tinian_5m_BPIstructures.zip WWW:LINK-1.0-http--link tinian_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Tinian 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/cnmi-guam/benthichabitatlayers/saipan_5m_BPIstructures.zip WWW:LINK-1.0-http--link saipan_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Saipan 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/cnmi-guam/benthichabitatlayers/fdm_5m_bpis.zip WWW:LINK-1.0-http--link fdm_5m_bpis.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Farallon de Medinilla 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/cnmi-guam/benthichabitatlayers/sarigan_10m_BPIstructures.zip WWW:LINK-1.0-http--link sarigan_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Sarigan 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/cnmi-guam/benthichabitatlayers/guguan_10m_BPIstructures.zip WWW:LINK-1.0-http--link guguan_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guguan 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/cnmi-guam/benthichabitatlayers/alamagan_10m_BPIstructures.zip WWW:LINK-1.0-http--link alamagan_10m_BPIstructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Alamagan 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/cnmi-guam/benthichabitatlayers/gal_5m_BPIstructures.zip WWW:LINK-1.0-http--link gal_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Galvez and South Galvez Banks and Eleven-mile reef 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/pria/benthichabitatlayers/Johnston_20m_BPIStructures.rar WWW:LINK-1.0-http--link Johnston_20m_BPIStructures.rar Archive file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Johnston 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/pria/benthichabitatlayers/Wake_50m_BPIStructures.zip WWW:LINK-1.0-http--link Wake_50m_BPIStructures.zip Zip file containing 50-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Wake 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/pria/benthichabitatlayers/Wake_10m_BPIStructures.zip WWW:LINK-1.0-http--link Wake_10m_BPIStructures.zip Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Wake 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/Tau_5m_BPIstructures.zip WWW:LINK-1.0-http--link Tau_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Ta'u 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_BPIstructures.zip WWW:LINK-1.0-http--link Rose_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (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/pria/benthichabitatlayers/Baker_20m_BPIstructures.rar WWW:LINK-1.0-http--link Baker_20m_BPIstructures.rar Archive file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Baker 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/OfuOlo_5m_BPIStructures.zip WWW:LINK-1.0-http--link OfuOlo_5m_BPIStructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Ofu and Olosega Islands 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/Tutuila_5m_BPIstructures.zip WWW:LINK-1.0-http--link Tutuila_5m_BPIstructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Tutuila 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_BPIStructures.zip WWW:LINK-1.0-http--link Swains_40m_BPIStructures.zip Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (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/pria/benthichabitatlayers/Howland_40m_BPIStructures.rar WWW:LINK-1.0-http--link Howland_40m_BPIStructures.rar Archive file containing 40-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Howland 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 dataset Representativeness BPI values are primarily derived from gridded bathymetry 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 collect data over the entire seafloor within the 0-500 meter depth range. Accuracy Horizontal positioning system: GPS C/A Horizontal position accuracy: typically 25 meters (refer to individual metadata files for each island for specific accuracy based on data sources used) Range resolution of sonar: varies with depth Raw sounding resolution: varies with depth Vertical accuracy of gridded product ~ 1% of water depth Completeness Report BPI values have been determined for areas where gridded bathymetry data is available based primarily on geographic priorities set by funding sources (Tier 1 priorities set by the Coral Reef Conservation Program include the Mariana Archipelago, American Samoa, and the Main Hawaiian Islands). Areas outside these geographic priorities have been generated as time and resources have allowed. In some cases, BPI values have intentionally not been produced for areas if the underlying bathymetry is not of sufficient quality or coverage (e.g., some locations in the PRIA), or if the resulting BPI data is not meaningful (e.g., at Thirty-five and Thirty-seven Fathom Banks there was too little change in elevation to create distinct bathymetric zones using the existing classification dictionary, and as a result the entire banktops would be classified as ‘flats’). 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 Different scales were used in the focal mean analysis to predict BPI (reef) structures for each location. See the maps and metadata for each location for specific details. Multibeam bathymetry data were collected by different NOAA vessels using the same or similar collection methods. All multibeam data processing was conducted in the same or similar manner by the PIFSC Ecosystem Sciences Division. The MHI bathymetry synthesis provided by the Hawaii Mapping Research Group was the source data for the Main Hawaiian Islands products. The method to develop the BPI data layers are generally described in the Benthic Habitat Mapping "Overview" section of the Pacific Islands Benthic Habitat Mapping Center website. The data are generated in ArcGIS using Spatial Analyst and the Benthic Terrain Modeler (BTM). Bathymetric Position Index (BPI) is a second order derivative of bathymetry. The derivation evaluates elevation differences between a focal point and the mean elevation of the surrounding cells within a user defined annulus or circle. A negative value represents a cell that is lower than its neighboring cells (depressions) and a positive value represents a cell that is higher than its neighboring cells (crests). Larger numbers represent more prominent features on the seafloor, which differ greatly from surrounding areas. Flat areas or areas with a constant slope produce near-zero values. (Lundblad et al. 2006) Benthic Terrain Modeler for ArcGIS Environmental Systems Research Institute, Inc. (ESRI) https://www.arcgis.com/home/item.html?id=b0d0be66fd33440d97e8c83d220e7926 WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information Lundblad, E.R. et al. 2006. A Benthic Terrain Classification Scheme for American Samoa. Marine Geodesy, 29:89-111. 2006-02-26 publication Marine Geodesy http://dx.doi.org/10.1080/01490410600738021 WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None