Benthic Habitats of Puerto Rico; Photomosaic of Guayanil

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Frequently anticipated questions:


What does this data set describe?

Title: Benthic Habitats of Puerto Rico; Photomosaic of Guayanil
Abstract:
This project is a coopertative effort between NOAA's National Centers for Coastal Ocean Science (NCCOS), U.S. Geological Survey, National Park Service, and the National Geophysical Data Center, to produce benthic habitat maps and georeferenced imagery for the U.S. Virgin Islands. This project was was conducted in support of the U.S. Coral Reef Task Force.
  1. How should this data set be cited?

    Program, NOAA/NOS/NOAA/Biogeography, 20010501, Benthic Habitats of Puerto Rico; Photomosaic of Guayanil: NOAA Coastal Services Center, Charleston, SC.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -66.95
    East_Bounding_Coordinate: -66.70
    North_Bounding_Coordinate: 18.02
    South_Bounding_Coordinate: 17.88

  3. What does it look like?

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

    Beginning_Date: 1999
    Ending_Date: 1999
    Currentness_Reference: Ground condition at date photos were taken (1999)

  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?

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

      The map projection used is Transverse Mercator.

      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -63
      Latitude_of_Projection_Origin: 0
      False_Easting: 500000
      False_Northing: 0

      Planar coordinates are encoded using Coordinate Pair
      Abscissae (x-coordinates) are specified to the nearest 2.4
      Ordinates (y-coordinates) are specified to the nearest 2.4
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80, WGS84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.25.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Pixel values are MrSID compressions. Data was orgininally geoTIF format.
    Entity_and_Attribute_Detail_Citation: MrSID Compressed orthrectified images; UTM19;


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?

    NGDC

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

    Matthew S. Kendall
    NOAA/NOS/NCCOS/Biogeography Program
    Marine Biologist
    1305 East West Highway, N/SCI-1
    Silver Spring, Maryland 20910
    USA

    301-713-3028*144 (voice)
    301-713-4388 (FAX)
    matt.kendall@noaa.gov

    Hours_of_Service: 8:00 AM to 5:00 PM M-F, EST


Why was the data set created?

This project was conducted in support of the U.S. Coral Reef Task Force. <http://coralreef.gov>


How was the data set created?

  1. From what previous works were the data drawn?

    NOAA/NOS/NGS Aerial Photos (source 1 of 1)
    Survey, NOAA/NOS/National Geodetic , 1999, Benthic Habitats of the U.S. Virgin Islands; Aerial Photos: NOAA NGS, Silver Spring.

    Type_of_Source_Media: aerial photography and scanned photos
    Source_Scale_Denominator: 48000
    Source_Contribution: NOS aerial photos were used to create orthophoto mosaics

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

    Date: 2000 (process 1 of 1)
    Ground control points, camera calibration data, and USGS DTM data were used to orthorectify 500 dpi scans of the aerial photos using Socet Set Version 4.2.1. Scanned photos were loaded into Socet Set with kinematic GPS data, camera calibration factors, DTM data, and other corrective measures to eliminate spatial distortion. Once a satisfactory spatial model had been produced (RMS less than 1) the optimal sections of each photo were selected to minimize sun glint, turbidity, etc. and maximize area of interpretable bottom features.

    Person who carried out this activity:

    Matthew S. Kendall
    NOAA/NOS/NCCOS/Biogeography Program
    Marine Biologist
    1305 East West Highway, N/SCI-1
    Silver Spring, Maryland 20910
    USA

    301-713-3028*144 (voice)
    301-713-4388 (FAX)
    matt.kendall@noaa.gov

    Hours_of_Service: 8:00 AM to 5:00 PM M-F, EST
  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?

    Positional accuracy was determined by solution of Socet Set generated model (RMS less than 1) and by comparison to independent ground control data.

  2. How accurate are the geographic locations?

    0.1 +- 3.0, y=0.9 +- 4.4 (values are in meters +/- standard deviation)

  3. How accurate are the heights or depths?

    not applicable

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

    Data is complete.

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

    These data are believed to be logically consistent, although not tested. Geometry appears topologically clean.


How can someone get a copy of the data set?

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

Access_Constraints: none
Use_Constraints: none

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

    NOAA/NOS/NCCOS/Biogeography Program
    1305 East West Highway, N/SCI-1, SSMC4
    Silver Spring, Maryland 20910
    USA

    301-713-3028 *144 (voice)
    301-713-4388 (FAX)
    matt.kendall@noaa.gov

    Hours_of_Service: 8:00 AM to 5:00 PM M-F, EST
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    not to be used for navigation. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    N/A

  6. What hardware or software do I need in order to use the data set?

    N/A


Who wrote the metadata?

Dates:
Last modified: 18-Sep-2014
Metadata author:
Matthew S. Kendall
NOAA/NOS/NCCOS/Biogeography Program
Marine Biologist
1305 East West Highway, N/SCI-1
Silver Spring, Maryland 20910
USA

301-713-3028*144 (voice)
301-713-4388 (FAX)
matt.kendall@noaa.gov

Hours_of_Service: 8:00 AM to 5:00 PM M-F, EST
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.13 on Thu Nov 20 10:42:54 2014