metadata_aadata_moderatedepth_sitesmean eng; USA utf8 dataset National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch 301-713-3028 301-713-4384 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 0800 - 1700, Monday to Friday, EST pointOfContact 2024-12-15 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Entity Point 299 North American Datum 1983 NAD83 2007-01-19 revision https://epsg.org/crs_4269/NAD83.html NAD83 Link to Geographic Markup Language (GML) description of 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::4269 Accuracy Assessment Sites (Mean Location) - Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands (2009) 2009 publication Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch originator NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS) Silver Spring MD publisher mapDigital Please use citation for the written document "Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands" when using these data. Benthic habitat maps of the moderate-depth marine environment of St. John, U.S. Virgin Islands were created using a combination of semi-automated classification and visual interpretation techniques of acoustic imagery. The objective of this effort, conducted by NOAA's Center for Coastal Monitoring and Assessment - Biogeography Branch in partnership with the U.S. National Park Service (NPS), was to provide spatially-explicit information describing the moderate-depth (30 - 60 m) benthic habitat types and live coral cover present in and around VICRNM's southern boundaries. The data contained in this shapefile represent the mean locations of the 299 accuracy assessment (AA) sites explored by NOAA field scientists. The purpose of this survey data was to collect information on current habitat conditions at random locations throughout the mapping area. Locations were determined by an iterative, GIS-based, stratified random sampling technique to ensure that all bottom classifications would be assessed. This information was used to evaluate the thematic accuracy of the St. John moderate-depth benthic habitat map. completed Bryan Costa National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch 301-713-3028 x146 301-713-4384 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 bryan.costa@noaa.gov 0800 - 1700, Monday to Friday, EST pointOfContact notPlanned CoRIS_Metadata theme NCEI Geoportal Filter EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat theme CoRIS Theme Thesaurus Geographic Information > Habitats theme CoRIS Discovery Thesaurus coral reef benthic habitats reef submerged aquatic vegetation unconsolidated sediments zone geomorphological structure biological cover accuracy assessment point theme None United States U. S. Virgin Islands St. John place None COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. John > St. John (18N064W0011) OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. John (18N064W0011) place CoRIS Place Thesaurus USVI place CoRIS Region The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) is publishing this data on their website. NCCOS Biogeography Branch does not guarantee the accuracy of the geographic features or attributes. Please see the written report and metadata records for each data set for complete information on the source, limitations, and proper use. otherRestrictions Use Constraints: Not for navigation. otherRestrictions Access Constraints: None Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands 2009-01-01 publication NOAA National Centers for Coastal Ocean Science Silver Spring MD publisher Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch originator documentDigital Costa, B.M., L.J. Bauer, T.A. Battista, P.W. Mueller and M.E. Monaco. 2009. Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands. NOAA Technical Memorandum NOS NCCOS 105. Silver Spring, MD. 55 pp. largerWorkCitation vector eng; USA environment imageryBaseMapsEarthCover Native Dataset Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850 -64.791987 -64.661868 18.238523 18.311455 2009-05-31 2009-06-07 Data were collected on 299 ground validation sites over a two-week field mission from 5/31/09 to 6/7/09 aboard U.S. National Park Service small research vessels. Based on guidelines from other recent NOAA accuracy assessment analyses (Battista et al. 2007), a minimum of 25 points were assigned to each of the detailed structure classes within the draft habitat map. Additional points were distributed based on the proportion of area of each structure class in the map. Several pre-selected sites were inaccessible by field scientists or were not classified due to visibility restrictions. AAData_ModerateDepth_SitesMean: Shapefile attribute table FID Internal feature number. Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Coordinates defining the features. Source On what mission was the video collected Unknown Site_Type Type of drop camera point (i.e. GV or AA) Unknown Site_ID Unique identifier for each accuracy assessment site Arbitrarily defined unique code | Specific to this field mission VideoName Name of video associated with site Variable XCoord X coordinate of site in decimal degrees Variable YCoord Y coordinate of site in decimal degrees Variable Zone_ Geographic zone of site Unknown Maj_Struct Major Geomorphological Structure Unknown Det_Struct Detailed Geomorphological Structure Unknown Maj_Cov Major Biological Cover Unknown P_Maj_Cov Percent Density/Patchiness of Major Biological Cover Unknown P_Coral_Cv Percent Cover of Live Coral Unknown Cover Combined Major and Detailed Biological Cover Unknown Habitat Concatenated Detailed Structure, Major Cover, Percent Cover and Percent Live Coral Cover Unknown Entity and Attribute Overview: Specific details of the attributes and values therein can be found in Chapter 1: Benthic Habitat Classification Scheme of "Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands" (Costa et al. 2009) Entity and Attribute Detail Citation: Costa, B.M., L.J. Bauer, T.A. Battista, P.W. Mueller and M.E. Monaco. 2009. Moderate-Depth Benthic Habitats of St. John, U.S. Virgin Islands. NOAA Technical Memorandum NOS NCCOS 105. Silver Spring, MD. 55 pp. National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program 301-713-3028 301-713-4384 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 0800 - 1700, Monday to Friday, EST distributor dataset Horizontal Positional Accuracy Report The true positional accuracy of individual epics was determined to be within 1 m for 96% of the logged points. For each survey site, individual epics were averaged to generate a mean GPS point for each location. 299 field positions were occupied and habitat characterizations were conducted for accuracy assessment during this work. These data were plotted in concert with remotely sensed imagery to assess the benthic habitat classifications at random locations throughoout the map. Further analysis was conducted to calculate a suite of thematic accuracy assessment metrics and is described in Costaet al. (2009). Data points with accompanying attribute information were collected with mapping-grade GPS receivers. The data were post processed for differential correction to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH). Site information was recorded in the field both in a data dictionary within the GPS receiver and on waterproof field sheets. A comparison between soft and hard copy data records were completed to ensure attribute collection consistency. Furthermore, underwater video was recorded at each site to maintain a record of habitat condition. This video was reviewed by NOAA staff in the office to ensure correct habitat attribution was made in the field. All errors were identified through these quality assurance techniques and corrected. This file is believed to be logically consistent. A benthic habitat map was generated from acoustic imagery and ground validation points using a combination of semi-automated classification and visual interpretation techniques. Target locations for the accuracy assessment of this habitat map were determined by an iterative, GIS-based, stratified random sampling technique to ensure that all bottom classifications would be assessed. Based on guidelines from other recent accuracy assessment analyses (Battista et al. 2007), a minimum of 25 points were assigned to each of the detailed structure classes within the draft habitat map. Additional points were distributed based on the proportion of area of each structure class in the map. Points were randomly placed within each class using Hawth's Analysis Tools (Beyer, 2004) in ArcGIS. Next, the number of points that fell within each detailed primary cover class was calculated. Where necessary, additional points were randomly added and re-distributed from classes with many points to ensure that there was a minimum of 25 points within each detailed cover class. 2009-01-01T00:00:00 NOAA field scientists explored the accuracy assessment locations with a suite of assessment techniques depending on the conditions at each site. Sample locations were navigated to using a hand-held Garmin 76 CS WAAS-enabled GPS unit. Underwater video from a SeaViewer Sea-Drop 950 camera was taken at each site. A weight was tied to the bottom of the camera to help lower the camera to the bottom, and the camera operator adjusted the camera position to get a downward and side view of the habitat at each location. Video length depended on the habitat type and vessel drift, ranging from approximately 30 seconds to two minutes. Videos of large, homogeneous sand habitats were generally short while heterogeneous coral reef habitats (especially edges) were typically longer. While the video was being recorded, GPS waypoints were recorded on board the vessel using a Trimble GeoXT GPS receivers. This resulted in a string of epics that tracked boat position at each site. An observer categorized each site according to the video for each level of the map classification scheme: major/detailed geomorphological structure, major/detailed biological cover, and percent coral. Data was entered into a custom data dictionary on the Trimble data logger and recorded on waterproof data sheets. 2009-01-01T00:00:00 Trimble Pathfinder Office software was used to post process and differentially correct the raw GPS data to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH). 2009-01-01T00:00:00 Ultimately, precisely positioned GPS positions and the associated classification data were viewed in a GIS to assess the accuracy of the draft benthic habitat map. 2009-01-01T00:00:00 Source Contribution: GPS data, which were originally recorded as code-phase signals in Trimble SSF format, were differentially post-processed to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH). Source Type: GPS data GPS data 2009-01-01 publication NOAA originator 2009-01-01 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 2025-03-24T17:17:16.804Z Last Metadata Review Date: 2010-02-26 National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch 301-713-3028 301-713-4384 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 0800 - 1700, Monday to Friday, EST pointOfContact