gov.noaa.ngdc.mgg.dem:11526 eng; USA utf8 dataset NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact 2017-11-27 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 row 6480 0.00027777778 column 4680 0.00027777778 vertical 1 area true 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 Instantaneous Water Level depth Instantaneous Water Level depth 2012-08-10 revision http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:datum:EPSG::5831 Instantaneous Water Level depth Link to Geographic Markup Language (GML) description of reference system. information resourceProvider European Petroleum Survey Group http://www.epsg-registry.org/ 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:datum:EPSG::5831 Grenada 1 arc-second Digital Elevation Model 2017-04-10 publication First NOAA National Centers for Environmental Information publisher NOAA National Centers for Environmental Information originator NOAA PMEL Center for Tsunami Research (NCTR) NOAA Center for Tsunami Research collaborator mapDigital NOAA Tsunami Inundation DEMs Grenada Digital Elevation Model NOAA's National Centers for Environmental Information is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for Tsunami Research program in support of NOAA's tsunami forecasting and warning efforts. completed NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact asNeeded Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps Earth Science > Land Surface > Topography > Topographical Relief Maps Earth Science > Oceans > Coastal Processes > Coastal Elevation theme NASA/GCMD Earth Science Keywords DEM > Digital Elevation Model theme NASA/GCMD Platform Keywords ICSU-WDS > International Council for Science - World Data System NOAA OneStop Project project Global Change Master Directory (GCMD) Project Keywords 2020-01-09 publication 9.1 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). 2024. GCMD Keywords, Version 19. 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 H: 1 meter - < 30 meters V: 1 meter - < 10 meters theme NASA/GCMD Data Resolution Keywords Coastal Relief Gridded elevations Integrated bathymetry and topography theme Uncontrolled Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > ST VINCENT AND THE GRENADINES Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Grenada Vertical Location > Land Surface Vertical Location > Sea Floor place NASA/GCMD Location Keywords Lesser Antilles Caribbean Sea place Uncontrolled DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 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). 2024. GCMD Keywords, Version 19. 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 Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series. Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. Tsunami Inundation DEM Project 2008-10-31 publication NOAA National Centers for Environmental Information custodian https://www.ncei.noaa.gov/maps/bathymetry/ HTTPS Bathymetric Data Viewer The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI). search https://www.ngdc.noaa.gov/mgg/coastal HTTPS DEM text search Text search for locating completed and planned DEMs. search mapDigital NOAA Coastal Inundation DEMs Named by primary coastal city, state in DEM. NOAA's National Centers for Environmental Information (NCEI) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions to support inundation modeling and community mitigation and resiliency efforts. These integrated bathymetric-topographic DEMs support tsunami forecast and warning from NOAA's Tsunami Warning Centers. The DEMs are used in the MOST (Method of Splitting Tsunami) model developed by NOAA's Pacific Marine Environmental Laboratory (PMEL) to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including federal and academia data archived at NCEI, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Depending on the user requirements and available data, grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). largerWorkCitation Digital Elevation Model of Grenada: Procedures, Data Sources, and Analysis 2017-04-10 publication NOAA National Centers for Environmental Information publisher NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact Citation URL https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/grenada_1_isl_2017.pdf Digital Elevation Model of Grenada: Procedures, Data Sources and Analysis Report describing the development of the Grenada DEM download 8 pages crossReference userGuide grid eng; USA elevation Native Dataset Environment: Microsoft Windows 7 Enterprise; ESRI ArcGIS 10.3.1.4959 ISO valid extents for Grenada 1 sec. DEM -62.30 -61.00 11.70 13.50 Digital Elevation Model Global Mosaic ArcGIS Image Service 2016-06-14 creation DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://www.ncei.noaa.gov/products/coastal-elevation-models HTTPS Coastal Elevation Models at NCEI information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff HTTPS NOAA GeoPlatform Entry for DEM Global Mosaic (Elevation Values) NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062 HTTPS NOAA GeoPlatform Entry for DEM Global Mosaic (Color Shaded Relief) Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital elevation models at NOAA/NCEI. information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042 ESRI:ArcGIS Digital Elevation Models Mosaic (Individual DEMs) An image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information. Either individual DEMs or small subsets can be accessed through this service. search publisher The DEM Global Mosaic is an image service providing a global, seamless bathymetry/topography mosaic that includes NCEI's ETOPO 2022, NCEI's Continuously Updated DEM (CUDEM), and other NCEI-stewarded DEMs, along with regional grids such as IBCAO, IBCSO and the Hawaiian Island Multibeam Synthesis (University of Hawaii). This service provides elevation/depth values in meters; for a visualization of the data, please see the related DEM Global Mosaic (Color Shaded Relief) service. There are 5 related image services providing access to Digital Elevation Models: DEM Mosaic (Individual DEMs), DEM Global Mosaic (Elevation Values), DEM Global Mosaic (Color Shaded Relief), CUDEM Mosaic (Elevation Values), and CUDEM Mosaic (Color Shaded Relief). NCEI builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. This service is a general-purpose global, seamless bathymetry/topography mosaic. It combines DEMs from a variety of near sea-level vertical datums, such as mean high water (MHW), mean sea level (MSL), and North American Vertical Datum of 1988 (NAVD88). No conversion/harmonization of vertical datums was performed. Because the mosaic contains 'overviews' for performance, individual DEMs cannot be separated from the others. Individual DEMs, or smaller subsets, are available in the companion DEM Mosaic (Individual DEMs) image service. By default, the DEMs are drawn in order of cell size, with higher-resolution grids displayed on top of lower-resolution grids. If overlapping DEMs have the same resolution, the newer one is shown. Please see NCEI's corresponding DEM Footprints feature service for polygon footprints and more information about the individual DEMs used to create this composite view. NCEI GIS Team NOAA National Centers for Environmental Information ncei.gis@noaa.gov pointOfContact DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING theme Global Change Master Directory (GCMD) Service Keywords 2020-01-09 publication 9.1 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). 2024. GCMD Keywords, Version 19. 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 These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov. ArcGIS Image Service 10.8.1 1 -180 180 -90 90 tight ArcGIS Server REST endpoint for image service (Elevation Values) https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic/ImageServer ESRI:ArcGIS ESRI Image Service REST specification DEM Global Mosaic (Elevation Values) ArcGIS Image Service REST endpoint for DEM Global Mosaic (Elevation Values) ArcGIS Image Service search ArcGIS for Server REST endpoint for image service (Color Shaded Relief) https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer ESRI:ArcGIS ESRI Image Rest Specification DEM Global Mosaic (Color Shaded Relief) ArcGIS Image Service This service provides a color shaded relief visualization of the data. The elevations/depths are displayed using this color ramp: https://gis.ngdc.noaa.gov/viewers/images/dem_color_scale.png. search WMS Get Capabilities https://gis.ngdc.noaa.gov/arcgis/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS OGC:WMS http://opengis.net/spec/wms DEM Global Mosaic (Color Shaded Relief) WMS Capabilities document for Open Geospatial Consortium Web Map Service for DEM Global Mosaic (Color Shaded Relief) search NCEI Digital Elevation Model Extents ArcGIS Feature Layer 2022-10-24 creation DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://www.ncei.noaa.gov/products/coastal-elevation-models HTTPS Coastal Elevation Models at NCEI information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=0afa88a1701749dbbf76fcadca4f77f3 HTTPS NOAA GeoPlatform Entry for NCEI Digital Elevation Model (DEM) Extents NOAA GeoPlatform listing for NCEI Digital Elevation Model (DEM) Extents information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff HTTPS NOAA GeoPlatform Entry for DEM Global Mosaic (Elevation Values) NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062 HTTPS NOAA GeoPlatform Entry for DEM Global Mosaic (Color Shaded Relief) Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital elevation models at NOAA/NCEI. information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042 ESRI:ArcGIS Digital Elevation Models Mosaic (Individual DEMs) An image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information. Either individual DEMs or small subsets can be accessed through this service. search publisher A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Centers for Environmental Information (NCEI). NCEI builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. Layers available in the map service: Layers 1-4: DEMs by Category (includes various DEMs, both hosted at NCEI, and elsewhere on the web); Layers 6-11: NCEI DEM Projects (DEMs hosted at NCEI, color-coded by project); Layer 12: All NCEI Bathymetry DEMs (All bathymetry or bathy-topo DEMs hosted at NCEI). NCEI GIS Team NOAA National Centers for Environmental Information ncei.gis@noaa.gov pointOfContact DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING theme Global Change Master Directory (GCMD) Service Keywords 2020-01-09 publication 9.1 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). 2024. GCMD Keywords, Version 19. 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 These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: https://www.nauticalcharts.noaa.gov. ArcGIS Feature Service 11.0 1 -180 180 -90 90 tight ArcGIS Server REST endpoint for feature service https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer HTTPS ESRI Feature Service REST Specification NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service search netCDF 4 Classic NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact https://www.ngdc.noaa.gov/thredds/dodsC/regional/grenada_1_isl_2017.nc.html OPeNDAP:OPeNDAP OPeNDAP Dataset Access Form OPeNDAP Dataset Access Form download https://www.ngdc.noaa.gov/thredds/fileServer/regional/grenada_1_isl_2017.nc HTTPS Download NetCDF File Download NetCDF File download https://www.ngdc.noaa.gov/thredds/wcs/regional/grenada_1_isl_2017.nc?service=WCS&version=1.0.0&request=GetCapabilities OGC:WCS Web Coverage Service GetCapabilities Web Coverage Service GetCapabilities information https://www.ngdc.noaa.gov/thredds/wms/regional/grenada_1_isl_2017.nc?service=WMS&version=1.3.0&request=GetCapabilities OGC:WMS Web Map Service GetCapabilities Web Map Service GetCapabilities information https://www.ngdc.noaa.gov/thredds/ncss/regional/grenada_1_isl_2017.nc/dataset.html HTTPS Download a subset of the NetCDF Download a subset of the NetCDF download https://www.ngdc.noaa.gov/thredds/ncml/regional/grenada_1_isl_2017.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fgrenada_1_isl_2017.nc HTTPS NetCDF Markup Language file NetCDF Markup Language file information repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 dataset Horizontal Positional Accuracy Report The horizontal accuracy of bathymetric and topographic features in the DEM is dependent upon DEM cell size and the accuracy of the input datasets used to determine corresponding cell values. Topography: 30 meters. Positional accuracy of input topographic datasets limits accuracy of corresponding cell values in DEM. SRTM topography: 90 meters, DEM cell-value relative-contribution factors: Geonode DEMs: 10, TNC Lidar: 1000, SRTM: 1. Bathymetry: ~10 meters to a few kilometers. Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM. Multibeam and singlebeam survey data: ranging from 30 meters to hundreds of meters. TNC bathymetry: ~ 10 meters to hundreds of meters. DEM cell-value relative-contribution factors: NCEI multibeam: 1, Bathymetric pre-surface: 100, Nautilus multibeam: 100, TNC bathymetry: 10, UK ENC soundings: 1, SeaDataNet singlebeam surveys: 10. Vertical Positional Accuracy Report The vertical accuracy of bathymetric and topographic features in the DEM is dependent upon the accuracy of the input datasets used to determine corresponding cell values. Topography: Assumed less than 1 meter. Vertical accuracy of input topographic datasets limits accuracy of corresponding cells in DEM. DEM cell-value relative-contribution factors: Geonode DEMs: 10, TNC Lidar: 1000, SRTM: 1. Bathymetry: estimated 5% of water depth. Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cells in DEM. Multibeam and singlebeam surveys: about 1% of water depth. DEM cell-value relative-contribution factors: NCEI multibeam: 1, Bathymetric pre-surface: 100, Nautilus multibeam: 100, TNC bathymetry: 10, UK ENC soundings: 1, SeaDataNet singlebeam surveys: 10. NCEI made every effort to obtain all available digital topographic and bathymetric datasets in the region for use in building the DEM. Datasets were visually compared internally and externally (with other overlapping datasets and satellite images and maps) in ESRI ArcGIS for identification of anomalous elevations or data inconsistencies. Where elevation inconsistencies occurred, the most recent and/or highest resolution data set was selected for use in that region. Elevations in the older and/or lower-resolution datasets were deleted prior to building the DEM. All datasets obtained by NCEI were converted to common horizontal datum of WGS84 geographic using ArcGIS or GDAL. They were also converted to common file format for visualization and inspection. 2017-02-07T00:00:00 Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact Datasets were visually inspected with ArcGIS and Global Mapper for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency. 2017-02-07T00:00:00 Multibeam surveys were gridded to 1 arc-second spacing using MB-System's 'mbgrid' tool. The resulting Arc ASCII grid was imported into ArcGIS. 2017-03-06T00:00:00 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1 arc-second grid that interpolated to fill empty cells. Points extracted every 5 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land. 2017-03-14T00:00:00 xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets. 2017-03-23T00:00:00 The DEM was quantitatively evaluated by comparing with source datasets. 2017-04-07T00:00:00 Source Contribution: singlebeam sonar data Singlebeam sonar data from SeaDataNet 2011-10-01 publication SeaDataNet sdn-userdesk@seadatanet.org pointOfContact SeaDataNet has developed an efficient distributed Marine Data Management Infrastructure for the management of large and diverse sets of data deriving from in situ and remote observation of the seas and oceans. 1985-01-01 2002-01-01 Source Contribution: Swath Sonar Survey Data E/V Nautilus mulitbeam bathymetry NA038, NA039, NA053, NA054 2013-10-30 creation Citation URL http://www.oceanexplorationtrust.org/ Ocean Exploration Trust Ocean Exploration offlineAccess 2013-10-30 2014-10-08 Source Contribution: Swath Sonar Survey Data Multibeam Bathymetry Database (MBBDB) 2004-01-01 publication NOAA National Centers for Environmental Information Multibeam Data Manager (303) 497-4613 (303) 497-6513 mb.info@noaa.gov 8:00 - 4:30 Mountain pointOfContact Citation URL https://www.ngdc.noaa.gov/mgg/mggd.html Multibeam Bathymetry Database (MBBDB) Multibeam Swath Sonar Survey Data download 1985-01-01 2004-01-01 Source Contribution: trackline bathymetry NGDC Marine Trackline Geophysics Database 1977-01-01 publication NOAA National Centers for Environmental Information Multibeam Data Manager (303) 497-4613 (303) 497-6513 mb.info@noaa.gov 8:00 - 4:30 Mountain pointOfContact Citation URL https://www.ngdc.noaa.gov/mgg/mggd.html Marine Geophysical Trackline Data Marine Geophysical Trackline Data download 1963-01-01 2000-01-01 Source Contribution: gridded bathymetry The GEBCO_2014 Grid, version 20150318 2015-03-18 publication British Oceanographic Data Centre (BODC) originator Citation URL http://www.gebco.net/ General Bathymetric Chart of the Oceans (GEBCO) The General Bathymetric Chart of the Oceans (GEBCO) consists of an international group of experts who work on the development of a range of bathymetric data sets and data products, including gridded bathymetric data sets, the GEBCO Digital Atlas, the GEBCO world map and the GEBCO Gazetteer of Undersea Feature Names. download 2015-03-18 Gridded topographic data Shuttle Radar Topography Mission 1 Arc-Second Global 2014-09-23 publication NASA > National Aeronautics and Space Administration originator Citation URL https://earthexplorer.usgs.gov/ Shuttle Radar Topography Mission The Shuttle Radar Topography Mission (SRTM) was a partnership between NASA and the National Geospatial-Intelligence Agency (NGA). Flown aboard the NASA Space Shuttle Endeavour (11-22 February 2000), SRTM fulfilled its mission to map the world in three dimensions. The USGS is under agreement with NGA and NASA's Jet Propulsion Laboratory to distribute SRTM elevation products derived from the C-band radar data. SRTM utilized interferometric C-band Spaceborne Imaging Radar to generate elevation data over 80 percent of the Earth's land surface. Global SRTM data at a resolution of 1 arc-second have been edited to delineate and flatten water bodies, better define coastlines, remove spikes and wells, and fill small voids. Larger areas of missing data or voids were filled by the NGA using interpolation algorithms in conjunction with other sources of elevation data. The SRTM 1 Arc-Second Global data offer worldwide coverage of void filled data at a resolution of 1 arc-second (30 meters) and provide open distribution of this high-resolution global data set. download 2000-02-01 Source Contribution: bathymetric DEMs and point data Bathymetry compilation for TNC AWE Project and Grenville Bathymetric DEM and Union Island Bathymetric DEM 2013-10-01 publication National Coral Reef Institute, Oceanographic Center, Nova Southeastern University 8000 North Ocean Drive Dania Beach Florida 33004 USA purkis@nova.edu originator The Nature Conservancy Conservation Information Manager caribgis@tnc.org pointOfContact 2013-10-01 Source Contribution: nautical chart soundings NGA nautical chart soundings publication National Geospatial-Intelligence Agency (NGA) originator Citation URL https://www.nga.mil/Pages/Default.aspx National Geospatial-Intelligence Agency (NGA) The Digital Nautical Chart is produced by the National Geospatial-Intelligence Agency (NGA) and is an unclassified, vector-based digital database containing maritime significant features essential for safe marine navigation. offlineAccess 1995-01-01 1998-01-01 Source Contribution: nautical chart soundings UKHO nautical chart soundings publication United Kingdom Hydrographic Office originator Citation URL https://www.admiralty.co.uk/ United Kingdom Hydrographic Office (UKHO) ADMIRALTY Maritime Products and Services The United Kingdom Hydrographic Office (UKHO) provides hydrographic and geospatial data to mariners and maritime organisations across the world. order originator 2010-07-13 2017-01-24 Source Contribution: Lidar DEM 1 meter DEM for Grenada 2013-10-01 publication The Nature Conservancy Conservation Information Manager caribgis@tnc.org pointOfContact 2013-10-01 Source Contribution: topographic DEMs DEMs for Grenada and SVG 2013-10-01 publication Citation URL http://charim-geonode.net/ Caribbean Handbook on Risk Information Management This GeoNode is established to share data prepared as an outcome of the CHARIM project conducted for five Caribbean countries. The CHARIM project is financed by the EU-funded ACP-EU Natural Disaster Risk Reduction program, managed by GFDRR. Its implementation is done by University of Twente, Netherlands, Asian Institute of Technology, Thailand, University of West Indies and University of Bristol. download 2013-10-01 annually 2018-08-29 Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact