NOAA TIFF Image - Unified 10m Bathymetric Rugosity, US Virgin Islands, St. Thomas, St. John, St. Croix, Puerto Rico (La Parguera, Culebra Island, Vieques Island, Tourmaline Bank, Mona Island) - Projects NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01, NF-10-03 - (2004-2010), UTM 19N NAD83

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Frequently anticipated questions:


What does this data set describe?

Title:
NOAA TIFF Image - Unified 10m Bathymetric Rugosity, US Virgin Islands, St. Thomas, St. John, St. Croix, Puerto Rico (La Parguera, Culebra Island, Vieques Island, Tourmaline Bank, Mona Island) - Projects NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01, NF-10-03 - (2004-2010), UTM 19N NAD83
Abstract:
This dataset contains a unified GeoTIFF with 10x10 meter cell size representing the rugosity of selected portions of seafloor around Puerto Rico, St. Croix, St. Thomas and St. John in the US Virgin Islands, derived from data collected in 2004, 2005, 2006, 2007, 2008, 2009 and 2010.

NOAA's NOS/NCCOS/CCMA Biogeography Branch, in collaboration with NOAA vessel Nancy Foster and territory, federal, and private sector partners, acquired multibeam bathymetry data in the US Caribbean from 2/18/04 to 3/5/04, 2/1/05 to 2/12/05, 3/21/06 to 4/2/06, 4/14/07 to 4/27/07, 2/25/08 to 3/8/08, 3/26/09 to 4/2/09, 3/18/10 to 4/6/10. Data was acquired with a pole-mounted Reson 8101 ER multibeam echosounder (240 kHz) in 2004 and 2005, a hull-mounted Kongsberg Simrad EM 1002 multibeam echosounder (95 kHz) in 2006, 2007, 2008, 2009 and 2010, a moon pool flange-mounted Reson 8124 multibeam echosounder (200 kHz) for water depths of less than 75 meters in 2007, and a moon pool flange-mounted Reson 7125 multibeam echosounder (dual frequecy, 200/400 kHz) for water depths of less than 75 meters in 2009 and 2010. It 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 from 2004-2009, and based on CUBE in 2010. 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 GeoTIFF. In 2010, the BASE surface was exported as a BAG file, and converted to a GeoTIFF in ESRI ArcMap 10. Rugosity was derived from this surface using NOAA's Benthic Terrain Modeler extension.

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.

Supplemental_Information: Vertical_Coordinate_System_Definition Depth_System_Definition
  1. How should this data set be cited?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, 201010, NOAA TIFF Image - Unified 10m Bathymetric Rugosity, US Virgin Islands, St. Thomas, St. John, St. Croix, Puerto Rico (La Parguera, Culebra Island, Vieques Island, Tourmaline Bank, Mona Island) - Projects NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01, NF-10-03 - (2004-2010), UTM 19N NAD83: NOAA's National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -68.129468
    East_Bounding_Coordinate: -64.282369
    North_Bounding_Coordinate: 19.405727
    South_Bounding_Coordinate: 16.642296

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 18-Feb-2004
    Ending_Date: 06-Apr-2010
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: raster digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Raster data set. It contains the following raster data types:

      • Dimensions 30000 x 41216 x 1, type Grid Cell

    2. What coordinate system is used to represent geographic features?

      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 coordinates are encoded using Row and Column
      Abscissae (x-coordinates) are specified to the nearest 10.000000
      Ordinates (y-coordinates) are specified to the nearest 10.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch

    NOAA - NMAO personnel and R/V NANCY FOSTER

  3. To whom should users address questions about the data?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
    Project Manager - Seafloor Characterization of US Caribbean
    1305 East West Highway, SSMC4
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current Biogeography project manager for Seafloor Characterization of US Caribbean.


Why was the data set created?

This multibeam data was collected as IOCM (Integrated Ocean and Coastal Mapping) projects NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01, and NF-10-03 during the first seven 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 2004-2010 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 USVI seafloor.


How was the data set created?

  1. From what previous works were the data drawn?

    Raw Multibeam Data NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04//NF-09-01/NF-10-03 (source 1 of 4)
    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, Unpublished Material, Raw Multibeam Data NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03.

    Type_of_Source_Media: external hard drive
    Source_Contribution: Original raw full resolution dataset.

    NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 HDCS Processed Multibeam Data (source 2 of 4)
    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, Unpublished Material, NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 HDCS Processed Multibeam Data.

    Type_of_Source_Media: external hard drive
    Source_Contribution:
    Processed, cleaned, and corrected full resolution dataset. Sourced from raw .PDS (PDS2000), .HSX (Hypack), .ALL (SIMRAD), .XTF (Extended Triton Format), and .GSF (Generic Sensor Format) data.

    NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 BASE Surface (source 3 of 4)
    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, Unpublished Material, NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 CARIS BASE Surface.

    Type_of_Source_Media: external hard drive
    Source_Contribution:
    Downsampled CARIS BASE (Bathymetry Associated with Statistical Error) grid with best depth layer. Sourced from processed HDCS data.

    NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 ASCII XYZ Multibeam Data (source 4 of 4)
    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, 201010, NOAA XYZ Text File of 10m Multibeam Bathymetry of US Caribbean, Project NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03, (2004-2010).

    Online Links:

    Type_of_Source_Media: external hard drive
    Source_Contribution:
    Downsampled ASCII text file containing XYZ values. XYZ = northing, easting, and depth in meters. Sourced from CARIS BASE surface.

  2. How were the data generated, processed, and modified?

    Date: 2010 (process 1 of 6)
    Process_Date 2004, 2005, 2006, 2007, 2008, 2009, 2010

    Data sources used in this process:

    • NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 HDCS Multibeam Data

    Date: 2010 (process 2 of 6)
    Process_Date 2004, 2005, 2006, 2007, 2008, 2009, 2010

    Data sources used in this process:

    • NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF/10/03 HDCS Multibeam Data

    Date: 2010 (process 3 of 6)
    Process_Date 2004, 2005, 2006, 2007, 2008, 2009, 2010

    Data sources used in this process:

    • NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 BASE Surface

    Date: 2009 (process 4 of 6)
    Process_Date 2004, 2005, 2006, 2007, 2008, 2009

    Data sources used in this process:

    • NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01 ASCII XYZ Multibeam Data

    Date: 2010 (process 5 of 6)
    The BAG file was opened in ArcMap 10 and exported as a GeoTIFF.

    Data sources used in this process:

    • NF-10-03 BAG Multibeam Data

    Date: 2010 (process 6 of 6)
    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 2004, 2005, 2006, 2007, 2008, 2009, 2010

    Data sources used in this process:

    • NF-04-06/NF-05-05/NF-06-03/NF-07-06/NF-08-04/NF-09-01/NF-10-03 HDCS ESRI Grid Multibeam Bathymetry

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    See Data Acquisition and Processing Report (DAPR) for NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01 and NF-10-03.

  3. How accurate are the heights or depths?

    See Data Acquisition and Processing Report (DAPR) for NF-04-06, NF-05-05, NF-06-03, NF-07-06, NF-08-04, NF-09-01 and NF-10-03.

  4. Where are the gaps in the data? What is missing?

    This ESRI Grid is sourced from a CARIS 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.

  5. How consistent are the relationships among the observations, including topology?

    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.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

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.

  1. Who distributes the data set? (Distributor 1 of 1)

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
    Project Manager - Seafloor Characterization of US Caribbean
    1305 East West Highway, SSMC4
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current Biogeography project manager for Seafloor Characterization of US Caribbean.
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    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.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 18-Sep-2014
Metadata author:
NOAA/NOS/NCCOS/CCMA Biogeography Branch
Attn: Project Manager for Seafloor Characterization of US Caribbean
1305 East West Highway, SSMC4
Silver Spring, MD 20910
USA

(301) 713-3028 (voice)

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


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