Identification_Information: 
  Citation: 
    Citation_Information: 
      Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
      Publication_Date: 200711
      Title: NOAA ESRI Grid - Unified 10m Bathymetric Rugosity of Selected Regions in Puerto Rico and the US Virgin Islands 2004 to 2007, UTM 19 NAD83
      Edition: 1st
      Geospatial_Data_Presentation_Form: raster digital data
      Publication_Information: 
        Publication_Place: Silver Spring, MD
        Publisher: NOAA's National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS)
      Online_Linkage: http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/overview.html
  Description: 
    Abstract: This dataset contains a unified ESRI Grid with 10 meter cell size representing the rugosity of selected portions of seafloor around La Parguera, Abrir La Sierra Bank, Bajo De Cico, and Isla De Mona in Puerto Rico and St. Croix, St. Thomas, and St. John in the US Virgin Islands, derived from data collected in 2004, 2005 2006, and 2007.  Rugosity is defined as the ratio of surface area to planar area and is used as a measure of benthic terrain complexity or "roughness". Rugosity values near 1 represent flat, smooth terrain, while higher values reflect increasing rugosity or terrain roughness. For rugosity grid interpretation, it is recommended that the grid be reclassified according to standard deviation divisions.
      
      NOAA's NOS/NCCOS/CCMA Biogeography Team, in collaboration with NOAA vessel Nancy Foster and territory, federal, and private sector partners, acquired multibeam bathymetry data in the US Virgin Islands from 2/18/04 to 3/5/04 and 2/1/05 to 2/12/05, including La Parguera, P.R. from 3/21/06 to 4/2/06. Data was acquired with a pole-mounted Reson 8101 ER multibeam echosounder (240 kHz) in 2004 and 2005, and with a hull-mounted Kongsberg Simrad EM 1002 multibeam echosounder (95 kHz) in 2006.
      
      In Abrir La Sierra, Bajo de Cico, and Isla de Mona, P.R., the team, also in collaboration with NOAA vessel Nancy Foster and territory, federal, and private sector partners, acquired data from 4/14/07 to 4/24/07.  Data with acquired with a hull-mounted Kongsberg Simrad EM 1002 (95 kHz) multibeam echosounder, as well as with a Reson 8124 (200 kHz) multibeam echosounder for shallow areas of Abrir La Sierra Bank.
      
      Data was processed by a NOAA contractor using CARIS HIPS software. Data has all correctors applied (attitude, sound velocity) and has been reduced to mean lower low water (MLLW) using final approved tides and zoning from NOAA COOPS. Data is in UTM zone 19 north, datum NAD83. The processed CARIS data was used to generate a CARIS BASE surface based on swath angle. For USVI and La Parguera, P.R. (2004-2006), an ASCII XYZ file was exported from the BASE surface and opened in ESRI ArcMap 9.x as an XY event. Then the ArcToolbox conversion tool 'Feature to Raster' was used to generate the final ESRI Grid.  For Abrir La Sierra Bank, Bajo de Cico, and Isla de Mona (2007), an ASCII XYZ file was exported from the BASE surface and opened in ESRI ArcMap 9.x using the XYZ to raster tool. The Benthic Terrain Modeller (BTM) tool, a collection of ArcGIS terrain visualization tools developed by the Oregon State University (OSU) Department of Geosciences and the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center, was used to calculate the rugosity of that bathymetric grid. More information on the specific algorithms used can be found in the BTM's documentation.
      
      The project was conducted to meet IHO Order 1 and 2 accuracy standards, dependant on the project area and depth. All users should individually evaluate the suitability of this data according to their own needs and standards.
    Purpose: This multibeam data was collected as IOCM (Integrated Ocean and Coastal Mapping) project projects NF-04-06, NF-05-05, NF-06-03, and NF-07-06 during the first, second, third and fourth years of 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 multibeam backscatter, multibeam bathymetry, and ground truth video footage collected during the 2004, 2005, 2006, and 2007 missions 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 US Caribbean Seafloor.
    Supplemental_Information: Depth datum is mean lower low water, units are meters and encoding method is explicit depth coordinate included with horizontal coordinates. Vertical Coordinate System information may be found in the Data Acquisition and Processing Report (DAPR) for 
      
      2007 (cruise number NF-07-06) at http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/pdf/NF-07-06_DAPR.pdf; 
      2006 (cruise number NF-06-03) at http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/pdf/NF-06-03%20DAPR.pdf; 
      2005 (cruise number NF-05-05) at http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/pdf/NF-05-05_DAPR.pdf; 
      2004 (cruise number NF-04-06) at http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/pdf/NF-04-06_DAPR.pdf
  Time_Period_of_Content: 
    Time_Period_Information: 
      Range_of_Dates/Times: 
        Beginning_Date: 20040218
        Ending_Date: 20070424
    Currentness_Reference: ground condition
  Status: 
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain: 
    Bounding_Coordinates: 
      West_Bounding_Coordinate: -67.961131
      East_Bounding_Coordinate: -64.415786
      North_Bounding_Coordinate: 18.366774
      South_Bounding_Coordinate: 17.681257
  Keywords: 
    Theme: 
      Theme_Keyword_Thesaurus: NOS Data Explorer Topic Category
      Theme_Keyword: Bathymetry/Topography
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
      Theme_Keyword: Geographic Information > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
      Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
      Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat > Description
      Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
      Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
      Theme_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > GIS
      Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology > Rugosity
    Theme: 
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: US Caribbean
      Theme_Keyword: US Virgin Islands
      Theme_Keyword: Bathymetry
      Theme_Keyword: Grid
      Theme_Keyword: Multibeam
      Theme_Keyword: Raster
      Theme_Keyword: NOAA
      Theme_Keyword: Biogeography
      Theme_Keyword: Nancy Foster
      Theme_Keyword: Simrad EM 1002
      Theme_Keyword: Reson 8101
      Theme_Keyword: GIS
      Theme_Keyword: Habitat
      Theme_Keyword: MBES
      Theme_Keyword: Benthic
      Theme_Keyword: Sonar
      Theme_Keyword: NPS
      Theme_Keyword: Reef
      Theme_Keyword: IOCM
      Theme_Keyword: Integrated Ocean and Coastal Mapping
      Theme_Keyword: Coral
      Theme_Keyword: Seafloor
      Theme_Keyword: Reson 8124
    Theme: 
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: elevation
      Theme_Keyword: 006
      Theme_Keyword: environment
      Theme_Keyword: 007
      Theme_Keyword: geoscientificInformation
      Theme_Keyword: 008
      Theme_Keyword: imageryBaseMapsEarthCover
      Theme_Keyword: 010
      Theme_Keyword: oceans
      Theme_Keyword: 014
    Place: 
      Place_Keyword_Thesaurus: None
      Place_Keyword: USVI
      Place_Keyword: US Virgin Islands
      Place_Keyword: St. Croix
      Place_Keyword: Buck Island
      Place_Keyword: Buck Island Reef National Monument
      Place_Keyword: BIRNM
      Place_Keyword: St. John
      Place_Keyword: St. Thomas
      Place_Keyword: La Parguera
      Place_Keyword: Puerto Rico
      Place_Keyword: PR
      Place_Keyword: Mid Shelf Reef
      Place_Keyword: MSR
      Place_Keyword: Abrir La Sierra Bank
      Place_Keyword: Bajo de Cico
      Place_Keyword: Isla de Mona
    Place: 
      Place_Keyword_Thesaurus: CoRIS Place Thesaurus
      Place_Keyword: OCEAN BASIN > Atlantic Ocean > Caribbean Sea /North Atlantic Ocean > Puerto Rico > Puerto Rico (18N066W0000)
      Place_Keyword: COUNTRY/TERRITORY > United States of America > Puerto Rico > Puerto Rico (18N066W0000)
      Place_Keyword: COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. Thomas > St. Thomas (18N064W0033)
      Place_Keyword: OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Leeward Islands > St. Thomas (18N064W0033)
      Place_Keyword: COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. John > St. John (18N064W0011)
      Place_Keyword: OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. John (18N064W0011)
      Place_Keyword: COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. Croix > St. Croix (17N064W0003)
      Place_Keyword: OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. Croix (17N064W0003)
    Stratum: 
      Stratum_Keyword_Thesaurus: None
      Stratum_Keyword: Seafloor
    Temporal: 
      Temporal_Keyword_Thesaurus: None
      Temporal_Keyword: 2004
      Temporal_Keyword: 2005
      Temporal_Keyword: 2006
      Temporal_Keyword: 2007
  Access_Constraints: Please cite any use of this data.
  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.
  Point_of_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
      Contact_Position: Project Manager - US Virgin Islands
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1305 East West Highway, SSMC4
        City: Silver Spring
        State_or_Province: MD
        Postal_Code: 20910
        Country: USA
      Contact_Voice_Telephone: (301) 713-3028
      Contact_Facsimile_Telephone: (301) 713-4388
      Contact_Instructions: Contact info is for CCMA general reception. Please ask for current Biogeography project manager for USVI.
  Data_Set_Credit: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
    
    NOAA - NMAO personnel and R/V NANCY FOSTER
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Data_Quality_Information: 
  Logical_Consistency_Report: While the project was conducted to meet IHO Order 1 and 2 accuracy standards, dependant on project area and depth, all users should independently analyze the dataset according to their own needs and standards to determine data usability.
  Completeness_Report: This ESRI Grid is sourced from a gridded dataset. The original full-resolution multibeam data was used to create a downsampled uniform-resolution CARIS BASE (Bathymetry Associated with Statistical Error) surface grid with a best depth component. The downsampled grid nodes from that depth surface were then exported and used to generate the ESRI Grid. Some positional shifts may have occurred between the original data points and the transformed grid.
  Positional_Accuracy: 
    Horizontal_Positional_Accuracy: 
      Horizontal_Positional_Accuracy_Report: See Data Acquisition and Processing Report (DAPR) for NF-04-06/NF-05-05/NF-06-03/NF-07-06.
    Vertical_Positional_Accuracy: 
      Vertical_Positional_Accuracy_Report: See Data Acquisition and Processing Report (DAPR) for NF-04-06/NF-05-05/NF-06-03/NF-07-06.
  Lineage: 
    Source_Information: 
      Source_Citation: 
        Citation_Information: 
          Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
          Publication_Date: Unpublished Material
          Title: Raw Multibeam Data NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-07-06
          Geospatial_Data_Presentation_Form: raster digital data
      Type_of_Source_Media: external hard drive
      Source_Time_Period_of_Content: 
        Time_Period_Information: 
          Range_of_Dates/Times: 
            Beginning_Date: 20040218
            Ending_Date: 20070424
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: Raw Multibeam Data NF-04-06/NF-05-05/NF-06-03/NF-07-06
      Source_Contribution: Original raw full resolution dataset.
    Source_Information: 
      Source_Citation: 
        Citation_Information: 
          Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
          Publication_Date: Unpublished Material
          Title: NF-04-06/NF-05-05/NF-06-03/NF-07-06 HDCS Processed Multibeam Data
          Geospatial_Data_Presentation_Form: vector digital data
      Type_of_Source_Media: external hard drive
      Source_Time_Period_of_Content: 
        Time_Period_Information: 
          Range_of_Dates/Times: 
            Beginning_Date: 20040218
            Ending_Date: 20070424
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 HDCS Processed Multibeam Data
      Source_Contribution: Processed, cleaned, and corrected full resolution dataset. Sourced from raw ALL and XTF data.
    Source_Information: 
      Source_Citation: 
        Citation_Information: 
          Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
          Publication_Date: Unpublished Material
          Title: NF-04-06/NF-05-05/NF-06-03/NF-07-06 CARIS BASE Surface
          Geospatial_Data_Presentation_Form: raster digital data
      Type_of_Source_Media: external hard drive
      Source_Time_Period_of_Content: 
        Time_Period_Information: 
          Range_of_Dates/Times: 
            Beginning_Date: 20040218
            Ending_Date: 20070424
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 BASE Surface
      Source_Contribution: Downsampled CARIS BASE (Bathymetry Associated with Statistical Error) grid with best depth layer. Sourced from processed HDCS data.
    Source_Information: 
      Source_Citation: 
        Citation_Information: 
          Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
          Publication_Date: 200710
          Title: NOAA XYZ Text File of 10m Multibeam Bathymetry of Puerto Rico - US Virgin Islands, Projects NF-04-06/NF-05-05/NF-06-03/NF-07-06, (2004-2007)
          Geospatial_Data_Presentation_Form: tabular digital data
          Online_Linkage: http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/overview.html
      Type_of_Source_Media: external hard drive
      Source_Time_Period_of_Content: 
        Time_Period_Information: 
          Range_of_Dates/Times: 
            Beginning_Date: 20040218
            Ending_Date: 20070424
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 ASCII XYZ Multibeam Data
      Source_Contribution: Downsampled ASCII text file containing XYZ values. XYZ = northing, easting, and depth in meters. Sourced from CARIS BASE surface.
    Process_Step: 
      Process_Description: For this project, the Chief Scientist was NOAA/NOS/NCCOS/CCMA's Tim Battista and the Lead Hydrographer for 2004-2006 was independent contractor Jay Lazar.  For 2007 the Lead Hydrographer was independent contractor Mike L. Stecher.  Data was collected aboard the NOAA ship Nancy Foster from 2/18/04 to 3/5/04 and 2/1/05 to 2/12/05 and 3/21/06 to 4/2/06 and 4/14/2007 to 4/24/2007.
        
        Multibeam data for 2004 and 2005 were acquired in GSF format with a pole-mounted Reson 8101 ER multibeam echosounder (240 kHz).  Multibeam data for 2006 were acquired in .all format with a hull-mounted Kongsberg Simrad 1002 ER multibeam echosounder (95 kHz). Backscatter snippet collection was enabled. Line spacing for acquisition was three times the water depth, and data was retained out to 75 degrees from nadir in 2004 and 2005 and out to 60 degrees from nadir in 2006, depending on project area. Heave, roll, pitch and heading correctors were collected using an Applanix POS/MV Model 320 inertial measurement unit (IMU) and associated Trimble GPS antennas. Sound velocity profiles were acquired with a Seabird Electronics SeaCat SBE19P CTD profiler and processed using Seabird Seaterm software, then applied directly to the raw data. Positioning was obtained using Northstar 941X GPS receivers with differential correctors from U.S. Coast Guard CORS beacon Isabel, Puerto Rico. Data was reduced to Mean Lower-Low Water (MLLW) using final approved tides from NOAA COOPS, based on National Water Level Observation Network (NWLON).
        
        Multibeam data for 2007 were acquired in .all format with a hull-mounted Kongsberg Simrad 1002 ER multibeam echosounder (95 kHz) for depths greater than 75 meters and in .xtf format with a Reson 8124 multibeam echosounder (200 kHz) for depths less than 75 meters. Backscatter snippet collection was enabled. Line spacing for acquisition was 3.5 times the water depth, and data was retained out to 55 degrees from nadir, for the Simrad, and 60 degrees from nadir, for the Reson, depending on project area. Heave, roll, pitch and heading correctors were collected using an Applanix POS/MV Model 320 V4 inertial measurement unit (IMU) and associated Trimble GPS antennas. Sound velocity profiles were acquired with a Seabird Electronics SBE-911 and SBE-19 CTD profiler and processed using NOAA's Velocwin V8.85 software and converted to Simrad and CARIS format, then applied directly to the raw Simrad data.  The Reson was also equipped with a real time sound velocity probe (Odom DigiBar Pro) at the sonar head and interfaced with the topside unit. Positioning was obtained using Trimble Zephyr GPS receivers with differential correctors from U.S. Coast Guard CORS beacon Isabel, Puerto Rico. Data was reduced to Mean Lower-Low Water (MLLW) using final approved tides from NOAA COOPS, based on National Water Level Observation Network (NWLON).
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 HDCS Multibeam Data
      Process_Date: 2007
    Process_Step: 
      Process_Description: Raw GSF, XTF and Simrad data (.all format) were converted and processed using CARIS HIPS software, resulting in a CARIS HDCS format dataset with all correctors applied. Attitude and SWMB data was cleaned of fliers, and SWMB data was reviewed in subset mode by a NOAA contractor.
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03 HDCS Multibeam Data
      Process_Date: 2007
    Process_Step: 
      Process_Description: After being submitted to CCMA by the contractor, CARIS HIPS was used to generate a CARIS BASE surface (similar to a DTM), based on weighted swath angle, from the processed HDCS data. Then CARIS export tool "BASE Surface to ASCII" was used to export a comma delimited ASCII XYZ file, with Easting, Northing, and Depth values, using ground position units (NAD83 UTM zone 20N).
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03 BASE Surface
      Process_Date: 2007
    Process_Step: 
      Process_Description: The  ASCII XYZ file was opened in ArcMap 9.x and the 'Display XY Data' option was used to add the XY data as an event with spatial reference NAD83 UTM zone 20N. Finally, the ArcToolbox 9.x conversion tool "Feature to Raster" was then used to convert the XY event into an ESRI Grid, based on the depth field Z. These steps were accomplished using an inhouse Arc script which combined these functions and allowed bulk processing.
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03 ASCII XYZ Multibeam Data
      Process_Date: 2007
    Process_Step: 
      Process_Description: 2007 data for Abrir La Sierra, Bajo de Cico, and Isla De Mona, P.R. was merged with previous 2004-2006 data for La Parguera P.R., and St. John, St. Croix, St. Thomas, USVI (reprojected to UTM zone 19 N) using the MERGE command in the Spatial Analyst raster calculator.
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 unified bathymetric ESRI GRID
      Process_Date: 2007
    Process_Step: 
      Process_Description: An ESRI grid of source bathymetry was input into the Rugosity Builder Tool, a component of the ArcGIS Benthic Terrain Modeller (BTM). The BTM tool, a collection of ArcGIS terrain visualization tools developed by the Oregon State University (OSU) Department of Geosciences and the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center, calculated the rugosity of that bathymetric grid based on an algorithm developed by Jeff Jenness. A short summary of the process, quoted directly from the BTM's documentation, is as follows:
        
        "...rugosity derivation relies, in part, on a neighborhood analysis using a 3 grid cell by 3 grid cell neighborhood. An algorithm is passed through the Raster Map Algebra Operation object within Spatial Analyst that calculates the planar distance between the center point of the center cell and of each of the eight surrounding cells in the neighborhood. Next, using the Pythagorean Theorem, the surface distance is calculated for each planar distance using the difference in elevation between the cells. The result of this function is sixteen separate grid data sets with each cell value equal to this surface distance. The next step in the process is to calculate the area formed by three adjacent sides. The result is eight triangular surface area grids. These grid datasets are combined to obtain a surface area data set for the input bathymetric data set. The final step in the process is to create a data set that represents the ratio of surface area to planar area. This final data set represents rugosity for the study area."
        
        More information on the specific algorithms used, and contact points for questions, can be found in the BTM's documentation.
        
        Rugosity values near 1 represent flat smooth terrain, while higher values reflect increasing rugosity or terrain roughness. For rugosity grid interpretation, is recommended that the grid be reclassified according to standard deviation divisions.
      Process_Date: 2007
    Process_Step: 
      Process_Description: Metadata added
      Source_Used_Citation_Abbreviation: NF-04-06/NF-05-05/NF-06-03/NF-07-06 unified rugosity ESRI GRID
      Process_Date: 2007
Spatial_Data_Organization_Information: 
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information: 
    Raster_Object_Type: Grid Cell
    Row_Count: 7028
    Column_Count: 37470
    Vertical_Count: 1
Spatial_Reference_Information: 
  Horizontal_Coordinate_System_Definition: 
    Planar: 
      Grid_Coordinate_System: 
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator: 
          UTM_Zone_Number: 19
          Transverse_Mercator: 
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -69.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      Planar_Coordinate_Information: 
        Planar_Coordinate_Encoding_Method: Row and Column
        Coordinate_Representation: 
          Abscissa_Resolution: 10.000000
          Ordinate_Resolution: 10.000000
        Planar_Distance_Units: meters
    Geodetic_Model: 
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
Distribution_Information: 
  Distributor: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
      Contact_Position: Project Manager - US Virgin Islands
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1305 East West Highway, SSMC4
        City: Silver Spring
        State_or_Province: MD
        Postal_Code: 20910
        Country: USA
      Contact_Voice_Telephone: (301) 713-3028
      Contact_Facsimile_Telephone: (301) 713-4388
      Contact_Instructions: Contact info is for CCMA general reception. Please ask for current Biogeography project manager for US Caribbean Seafloor Characterization.
  Resource_Description: Downloadable Data
  Distribution_Liability: 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.
  Standard_Order_Process: 
    Digital_Form: 
      Digital_Transfer_Information: 
        Format_Name: ESRI Grid
        Transfer_Size: 1017.041
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: http://ccma.nos.noaa.gov/products/biogeography/usvi_nps/data.html
    Fees: None
Metadata_Reference_Information: 
  Metadata_Date: 20090105
  Metadata_Review_Date: 20090105
  Metadata_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: NOAA/NOS/NCCOS/CCMA Biogeography
        Contact_Person: Project Manager
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1305 East West Highway, SSMC4
        City: Silver Spring
        State_or_Province: MD
        Postal_Code: 20910
        Country: USA
      Contact_Voice_Telephone: (301) 713-3028
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: Local Time
  Online_Linkage: http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
  Online_Linkage: http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
  Online_Linkage: http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
CoRIS: 
  CoRIS_ID: 20090105045025
  CoRIS_Children: None
  CoRIS_Beginning_Date: 20040218
  CoRIS_Ending_Date: 20070424
  CoRIS_Metadata_Link: http://www.coris.noaa.gov/metadata/records/txt/nos_bathy_2007_4567uni_rug.txt
  CoRIS_Tracking_ID: 2540