Multibeam Mapping of the West Florida Shelf, Gulf of Mexico, Twin Ridges Area

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Frequently anticipated questions:


What does this data set describe?

Title:
Multibeam Mapping of the West Florida Shelf, Gulf of Mexico, Twin Ridges Area
Abstract:
XYZ ASCII format high-resolution bathymetry data generated from the 2002 multibeam sonar survey of the West Florida Shelf, Gulf of Mexico.
Supplemental_Information: Resource Description: 2002_twin_ridges
  1. How should this data set be cited?

    University of South Florida, College of Marine Science, Chief Scientist (David Naar), 2003, Multibeam Mapping of the West Florida Shelf, Gulf of Mexico, Twin Ridges Area.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -85.390227
    East_Bounding_Coordinate: -85.349306
    North_Bounding_Coordinate: 29.012675
    South_Bounding_Coordinate: 28.965668

  3. What does it look like?

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

    Beginning_Date: 12-Jul-2002
    Ending_Date: 16-Jul-2002
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: XYZ ASCII

  6. How does the data set represent geographic features?

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

      This is a Point data set. It contains the following vector data types (SDTS terminology):

      • Point

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00002. Longitudes are given to the nearest 0.00002. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is WGS84.
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.25722356300.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Sample of bathymetry XYZ ASCII file

    Longitude Latitude and Elevation (depth)

    -85.7196898 29.2609879 78.62 -85.7196670 29.2610208 78.55 -85.7196692 29.2610364 77.99 -85.7197095 29.2610385 78.55 -85.7196891 29.2610678 78.66 -85.7196718 29.2610927 79.08 -85.7196875 29.2611121 78.55 -85.7197724 29.2610305 79.12 -85.7197483 29.2610655 78.67

    Entity_and_Attribute_Detail_Citation: none


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?

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

    David Naar
    University of South Florida, College of Marine Science
    Associate Professor of Marine Geophysics
    140 7th Avenue South
    St. Petersburg, Florida 33701-5016
    USA

    (727) 553 1637 (voice)
    (727) 553 1189 (FAX)
    naar@usf.edu


Why was the data set created?

These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display bathymetry data of the West Florida Shelf, Gulf of Mexico.


How was the data set created?

  1. From what previous works were the data drawn?

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

    Date: 10-Oct-2002 (process 1 of 1)
    The bathymetry data were collected along a continuous swath perpendicular to the direction of the ship using a Kongsberg Simrad EM3000 (300 kHz) multibeam sonar system. The data are cleaned of bad navigation and depth soundings. The depth soundings are gridded into a common grid. The gridded data are converted to an XYZ ASCII format file (Longitude, Latitude, Depth in Meters).

    Person who carried out this activity:

    Brian Donahue
    University of South Florida, College of Marine Science
    Marine Technician / Research Assistant
    140 7th Avenue South
    St. Petersburg, Florida 33701-5016
    USA

    (727) 553 1121 (voice)
    (727) 553 1189 (FAX)
    briand@marine.usf.edu

  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?

    Not determined.

  2. How accurate are the geographic locations?

    0.5 meters

  3. How accurate are the heights or depths?

    0.1 to 0.2 meters

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

    Complete

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

    Point features present.


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:
Please recognize the University of South Florida as the source of this information.

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

    University of South Florida, College of Marine Science
    140 7th Avenue South
    St. Petersburg, FL 33701-5016
    USA

    (727) 553 1637 (voice)

  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 not intended for navigational purposes.

    Although these data have been used by the University of South Florida, College of Marine Science, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.

    Neither the University of South Florida or the State of Florida nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.

    Trade, firm, or product names and other references to non-University of South Florida products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the University of South Florida or the State of Florida, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

    Disclaimer- While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 20-Dec-2012
Metadata author:
Brian Donahue
University of South Florida, College of Marine Science
Marine Technician / Research Assistant
140 7th Avenue South
St. Petersburg, Florida 33701-5016
USA

(727) 553 1121 (voice)
(727) 553 1189 (FAX)
briand@marine.usf.edu

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


Generated by mp version 2.9.13 on Fri Jul 25 10:41:19 2014