NPS11_STX_SARI_LiDAR_Bathy_5m_Metadata eng; USA utf8 dataset Project Manager - Seafloor Characterization of the U.S. Caribbean NOAA/NOS/NCCOS/CCMA Biogeography Branch (301) 713-3028 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 USA 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 346 column 613 vertical 1 point 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 GeoTIFF of 5x5 m Relative Reflectivity for Salt River Bay, St. Croix, 2011, UTM 20N NAD83 (NCEI Accession 0131858) 2011 publication 1st 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 National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS) Silver Spring MD publisher imageDigital This image represents a LiDAR (Light Detection & Ranging) 5x5 meter resolution bathymetric surface for an area surrounding the mouth of Salt River Bay (SARI)St. Croix in the U.S. Virgin Islands (USVI). The image's horizontal coordinate system is NAD83 UTM 20 North, and depth values are in meters referenced to Mean Lower Low Water (MLLW) heights. Fugro LADS, in collaboration with NOAA's NOS/NCCOS/CCMA Biogeography Branch, the University of New Hampshire and the National Park Service, acquired bathymetry, relative seafloor reflectivity and hyperspectral imagery in St. Croix from 2/21 to 2/22/2011. Hyperspectral data were acquired using a Hyspex VNIR-1600 sensor. Bathymetry and reflectivity data were acquired using a LADS (Laser Airborne Depth Sounder) Mark II Airborne System from altitudes between 1,200 and 2,200ft at ground speeds between 140 and 175 knots. The 900 Hertz Nd: YAG (neodymium-doped yttrium aluminum garnet) laser (1064 nm) acquired 5x5 meter spot spacing and 200% seabed coverage. In total, 1.62 square kilometers of LiDAR were collected between 0 m and 34 m in depth. Environmental factors such as wind strength and direction, cloud cover, water clarity and depth influenced the area of data acquisition on a daily basis. The data was processed using the LADS Mark II Ground System and data visualization, quality control and final products were created using CARIS HIPS and SIPS and CARIS BASE Editor. All users should individually evaluate the suitability of this data according to their own needs and standards. This LiDAR collection is an important effort in an ongoing NOAA scientific research mission in the US Caribbean to characterize nearshore to deep water coral reef habitats at depths down to 1,000 meters. The mission purpose is to better understand the resources within the surveyed reef habitats, and ultimately develop species utilization models linking physical habitats with biological information. The acquired bathymetry, relative seafloor reflectivity, and hyperspectral imagery will be used internally to characterize sea floor topography and to create benthic habitat maps, helping NOAA meet its mapping commitment to the US Coral Reef Task Force. The resulting publicly-distributed data is also a contribution to the greater scientific community interested in the USVI seafloor. completed asNeeded CoRIS_Metadata theme NCEI Geoportal Filter M053 Mapping essential fish habitat within Habitat Areas of Particular Concern (HAPCs) in the U.S. Caribbean 20675 project CRCP Project Bathymetry/Topography theme NOS Data Explorer Topic Category Geographic Information > LiDAR Geographic Information > Bathymetry theme CoRIS Discovery Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat > Description theme CoRIS Theme Thesaurus USVI US Virgin Islands St. Croix Salt River Bay National Historic Park and Ecological Preserve SARI Bathymetry Depth Lidar LADS Mark II NOAA Biogeography GIS Habitat Benthic NPS Reef IOCM Integrated Ocean and Coastal Mapping Coral Seafloor theme None USVI US Virgin Islands St. Croix place None COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > U. S. Virgin Islands > U. S. Virgin Islands (17N064W0000) COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. Croix > Salt River Bay (17N064W0022) OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Lesser Antilles > U. S. Virgin Islands (17N064W0000) OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > St. Croix > Salt River Bay (17N064W0022) place CoRIS Place Thesaurus Seafloor stratum None 2011 temporal None These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials. otherRestrictions Use Constraints: Note: NOT TO BE USED FOR NAVIGATION. These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials. otherRestrictions Access Constraints: Please cite any use of this data. grid eng; USA elevation environment geoscientificInformation imageryBaseMapsEarthCover oceans Native Dataset Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000 -64.765071 -64.736015 17.773184 17.788555 2011-02-21 2011-02-22 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch Contact info is for CCMA general reception. Please ask for the project manager of Seafloor Characterization of the U.S. Caribbean (301) 713-3028 (301) 713-4384 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 USA Contact info is for CCMA general reception. Please ask for the project manager of Seafloor Characterization of the U.S. Caribbean distributor dataset Horizontal Positional Accuracy Report None. Vertical Positional Accuracy Report None. This GeoTIFF is sourced from a gridded dataset. The original full-resolution Lidar data was used to create a downsampled uniform-resolution surface in CARIS. All users should independently analyze the dataset according to their own needs and standards to determine data usability. James Guilford and Scott Ramsay from Fugro LADS lead this mapping effort. Hyperspectral data were acquired using a Hyspex VNIR-1600 sensor. Bathymetry and reflectivity data were acquired using a LADS (Laser Airborne Depth Sounder) Mark II Airborne System from altitudes between 1,200 and 2,200ft at ground speeds between 140 and 175 knots. The 900 Hertz Nd: YAG (neodymium-doped yttrium aluminum garnet) laser (1064 nm) acquired 5x5 meter spot spacing and 200% seabed coverage. Green laser pulses are scanned beneath the aircraft in a rectilinear pattern. The pulses are reflected from the land, sea surface, within the water column and from the seabed. The height of the aircraft is determined by the infrared laser return, which is supplemented by the inertial height from the Attitude and Heading Reference System and GPS height. Real-time positioning is obtained by an Ashtech GG24 GPS receiver combined with Wide Area DGPS (Differential Global Positioning System) provided by the Fugro Omnistar to provide a differentially corrected position. Ashtech Z12 GPS receivers are also provided as part of the Airborne System and Ground Systems to log KGPS (Kinetic Global Positioning System) data on the aircraft and at a locally established GPS (Global Positioning System) base station. 2011-01-01T00:00:00 The reflectivity of an LADS pulse is a measure of the amount of energy reflected from the seabed for each individual laser pulse at the wavelength of the laser, 532nm (green/blue). The basic difference between processing an ALB waveform for depth and for reflectivity is that depth processing focuses on the leading edge of the return waveform, whereas reflectivity requires integration of the entire return pulse. Each sounding is assessed for suitability. Dry soundings and soundings in very shallow water are not processed for reflectivity. Each sounding is normalized for the electronic gain applied to the photo multiplier tube to which the received laser energy is optically routed. The gain-normalized return waveform is then analyzed to determine energy returning from the seabed. Integration of the waveform from the seabed will produce a numerical value of reflectivity. To ensure that this value accurately and meaningfully describes variation in seabed reflectivity several parameters must be taken into consideration. Energy is lost from the pulses transmitted from the aircraft. These losses include the air/water interface and those through the water column, and any system specific losses such as optical filtering and receiver field of view. Reflectivity value, calculated for each pulse, is the ratio between the received energy normalized for the losses described and the transmitted energy. Once a relative reflectivity value has been calculated, further statistical cleaning to remove outliers is completed. Because the dataset is of relative reflectivity rather than an absolute value for each point, the entire dataset is scaled to ensure the full dynamic range is used over the dataset. This scaling is applied over an entire survey area to ensure dataset consistency (Collins et al. 2007). Collins et al. 2007 is available online here: http://www.fugrolads.com/datasheets/Hydro_Intl_LiDAR_Seabed_Classification.pdf 2011-01-01T00:00:00 Source Contribution: Original raw full resolution dataset.Source Type: external hard drive Raw Lidar Data 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 DIGITAL DATA 2011-02-21 2011-02-22 Source Contribution: Processed, cleaned, and corrected full resolution dataset. Sourced from raw LADS data.Source Type: external hard drive Processed Lidar Data 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 DIGITAL DATA 2011-02-01 2011-03-01 Source Contribution: Downsampled CARIS BASE (Bathymetry Associated with Statistical Error) grid with best depth layer. Sourced from processed HDCS data.Source Type: external hard drive CARIS BASE Surface 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 mapDigital 2011-02-01 2011-03-01 Source Contribution: Downsampled GeoTIFF raster containing depth values in meters (referenced to MLLW). Sourced from CARIS BASE surface.Source Type: external hard drive SARI_Bathy_5m.tif 2011-01-01 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 mapDigital 2011-02-01 2011-03-01 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 2025-03-24T17:51:55.677Z Project Manager - Seafloor Characterization of the U.S. Caribbean NOAA/NOS/NCCOS/CCMA Biogeography Branch (301) 713-3028 1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor Silver Spring MD 20910 USA pointOfContact