apra_5m_hardsoft 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 1021 column 1333 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 Preliminary hard and soft bottom seafloor substrate map derived from gridded sidescan and bathymetry derivatives at Apra Harbor, Guam U.S. Territory. 2010-11-22 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 Preliminary hard and soft seafloor substrate map classified from sidescan data and bathymetric derivatives at Apra Harbor, Guam U.S. Territory. The dataset was created using Bathymetric Position Index (bpi) zones derived from Reson SeaBat 8125 multibeam data at a 1 m grid cell size, and Klein 3000 sidescan sonar data. The sonar frequency is 455 kHz for the Reson Seabat 8125 multibeam echosounder. Additional information on multibeam and sidescan datasets can be found in the Data Acquisition and Processing Report (DAPR) that can be accessed at: www.soest.hawaii.edu/pibhmc. Classification of the bathymetry and sidescan data into hard and soft seafloor substrates were validated using groundtruth data collected for the US Navy in Appendix J of the Final EIS Statement: Guam and CNMI Military Relocation accessed at: http://www.guambuildupeis.us/final_documents. Survey site images can be found at http://guamreeflife.com/htm/reeftour/cvn_survey_sites.htm. Although hard and soft classes from the substrate map are highly correlated with those from the optical validation data, the substrate map should be used with caution as groundtruth data were mostly collected at areas of known hard bottom in less than 60 ft of water depth. 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. 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/CNMI_images/apra_5m_hardsoft_445.jpg Hard and Soft Seafloor Substrate JPEG CoRIS_Metadata theme NCEI Geoportal Filter Benthic Habitat Mapping and Characterization - Commonwealth of the Northern Mariana Islands and Guam 1398 project CRCP Project EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats theme CoRIS Theme Thesaurus Geographic Information > Habitats theme CoRIS Discovery Thesaurus OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Apra Harbour (13N144E0051) COUNTRY/TERRITORY > United States of America > Guam > Apra Harbour (13N144E0051) place CoRIS Place Thesaurus Guam 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 the NOAA Pacific Islands Fisheries Science Center (PIFSC) Coral Reef Ecosystem Division (CRED) and the Pacific Islands Benthic Habitat Mapping Center (PIBHMC), and the Joint Institute for Marine and Atmospheric Research (JIMAR) and School of Ocean and Earth Science and Technology (SOEST), University of Hawaii as the sources of this information. otherRestrictions Access Constraints: None unclassified Not applicable Not applicable grid eng; USA imageryBaseMapsEarthCover 144.614 144.676 13.418 13.464 2008-03-29 2008-05-04 Survey data were acquired by the United States Navy (USN) Fleet Survey Team (FST) with Survey Vessel Swamp Fox. A Reson 8125 multibeam echosounder was mounted from an arm on the port side of the vessel. The Klein 3000 Side Scan Sonar was operated in the stern-towed configuration. Additional detailed information on data acquisition, equipment configuration, and corrections can be found in the Data Acquisition and Processing Report (DAPR), SWAMPFOX_DAPR_2008.pdf, that can be accessed at: www.soest.hawaii.edu/pibhmc and is included in the ZIP file containing the bathymetry grids. See the process description portion of this document for additional information about how the classes were derived. Entity and Attribute Overview: none Entity and Attribute Detail Citation: none Arc ASCII 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 ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/Apra_5m_Hardsoft.zip download dataset Horizontal Positional Accuracy Report Horizontal positioning system: see DAPR Horizontal position accuracy: see DAPR Vertical Positional Accuracy Report see DAPR Raw sounding resolution: Variable Complete These data are believed to be logically consistent though no tests were performed Processing steps used to generate the sidescan and bathymetry are described in their own metadata that can be found at www.soest.hawaii.edu/pibhmc. Initial efforts to create a hard and soft substrate map using traditional methods at PIBHMC were unsuccessful due to shadowing effects in the sidescan imagery. Instead, Bathymetric Position Index Zones were derived from the gridded multibeam bathymetry (apra_bty_1m) using the Benthic Terrain Modeler (BTM). The BTM (written for ArcGIS 8.x or 9.x) may be downloaded from http://dusk2.geo.orst.edu/djl/samoa/tools.html. BPI Zones are derived from a focal mean analysis on bathymetry and slope wherein bathymetric highs and lows are designated as crests and depressions respectively. After testing 5 experimental scales, the bpi with scalefactor 10 was chosen based on the diameter of reef structures seen in the bathymetry (also after Lundblad et al. 2006; see Supplemental_Information). Two ranges of slope defined flats and slopes: x < 5 and 5 < x < 70. The BPI Zones map was reclassified using the Spatial Analyst>Reclassify tool in ArcMap version 9.3.1 wherein classes equal to crests and slopes were considered hard and classes equal to flats were considered soft. These features were selected to correspond to hard features following visual assessment of the BPI map against the sidescan data. Depressions were validated by the sidescan imagery and called hard when corresponding to a sidescan value < 90 and soft when corresponding to a sidescan value > 90. Some additional areas corresponding to hard sidescan values (< 90) which did not correspond to features identified in the BPI map were also classified as hard. These were manually delineated in the raster using tools in ArcGIS version 9.3.1. 2010-11-15T00:00:00 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 2025-03-24T13:24:37.144Z Last Metadata Review Date: 2010-12-02 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