25 m GLORIA sidescan sonar mosaic detail for the Gulf of Mexico Mississippi Fan study area

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Frequently anticipated questions:

What does this data set describe?

Title:
25 m GLORIA sidescan sonar mosaic detail for the Gulf of Mexico Mississippi Fan study area
Abstract:
This image is an enlarged, detailed area from the Gulf of Mexico GLORIA sidescan sonar mosaic. The image was co-registered with SeaMARC 1A sidescan sonar data collected during R/V FARNELLA 90-3 cruise.
Supplemental_Information:
Two images of the 25 m GLORIA sidescan sonar data are available for the study area. They are identical with the exception that one image has been radiometrically enhanced for better viewing.
  1. How might this data set be cited?
    Paskevich(comp.), Valerie, 20000426, 25 m GLORIA sidescan sonar mosaic detail for the Gulf of Mexico Mississippi Fan study area: Open-File Report 2000-352, USGS Coastal and Marine Geology Team, U.S. Geological Survey, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Paskevich, Valerie F., Twichell, David C., and Schwab, William C., 2000, Seamarc 1A sidescan sonar mosaic, cores and depositional interpretation of the Mississippi Fan: ArcView GIS data release: Open-File Report 2000-352, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    Suggested citation: Paskevich, V.F., Twichell, D.C., and Schwab, W.C., 2000, Seamarc 1A sidescan sonar mosaic, cores and depositional interpretation of the Mississippi Fan—ArcView GIS data release: U.S. Geological Survey Open-File Report 2000-352, https://doi.org/10.3133/ofr00352.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -86.6027
    East_Bounding_Coordinate: -84.9864
    North_Bounding_Coordinate: 26.9000
    South_Bounding_Coordinate: 26.1001
  3. What does it look like?
    https://pubs.usgs.gov/of/2000/of00-352/data/imagery/raw/browse/gloria.gif (overview of the 25 m GLORIA sidescan sonar detail dataset for the Mississippi Fan Study area)
    GIF
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 02-Feb-1982
    Ending_Date: 29-Sep-1985
    Currentness_Reference:
    data collection
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: remote-sensing image
  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 2848 x 5635, type Pixel
    2. What coordinate system is used to represent geographic features?
      The map projection used is Albers Conical Equal Area.
      Projection parameters:
      Standard_Parallel: 29.5
      Standard_Parallel: 45.5
      Longitude_of_Central_Meridian: -089.000000
      Latitude_of_Projection_Origin: +00.000000
      False_Easting: 0
      False_Northing: 0
      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 25
      Ordinates (y-coordinates) are specified to the nearest 25
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview: No attributes are associated with the image.
    Entity_and_Attribute_Detail_Citation: No attributes are associated with the image.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Valerie Paskevich(comp.)
  2. Who also contributed to the data set?
    The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.
  3. To whom should users address questions about the data?
    U. S. Geological Survey
    Attn: Dave Twichell
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov

Why was the data set created?

This GIS overlay is a component of the U. S. Geological Survey, Woods Hole Field Center's, Gulf of Mexico ArcView GIS database. The Gulf of Mexico GIS database is intended to organize and display USGS held data and provide on-line (WWW) access to the data and/or metadata.

How was the data set created?

  1. From what previous works were the data drawn?
    OFR96-657 (source 1 of 2)
    Paskevich(comp.), Valerie, 19961008, Digital Mosaics of the GLORIA Sidescan Sonar Data of the Gulf of Mexico: U.S. Geological Survey Open-File Report OFR96-657, Coastal and Marine Geology Program, Woods Hole, MA, U.S. Geological Survey.

    Online Links:

    Other_Citation_Details:
    The original metadata had a link to a computer in Woods Hole (kai) that is no longer available. It's unclear if the version of the mosaic on that one is the revised image indicated in the edition. The kai data are no longer available.
    This is part of the following larger work.

    various(comp.), Unknown, U. S. Exclusive Economic Zone, Gulf of Mexico and eastern Caribbean areas: U.S. Geological Survey Miscellaneous Investigations I-1864-A, U.S. Geological Survey, Office of Marine Geology, U.S. Geological Survey, Reston, VA.

    Online Links:

    Type_of_Source_Media: CD-ROM
    Source_Contribution:
    The 16 individual 50m mosaics were combined to create the 250m composite Gulf of Mexico GLORIA mosaic.
    I-1864-A,B (source 2 of 2)
    U.S. Geological Survey(comp.), National Oceanic and Atmospheric Administration, and National Aeronautics and Space Administration, 19880323, GLORIA Data: Gulf of Mexico: GLORIA Data: Gulf of Mexico Gloria01, U.S. Geological Survey, Office of Energy and Marine Geology, U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: CD-ROM
    Source_Contribution:
    Raw imagery of GLORIA data may be retrieved from this CD-ROM. The user must note the number of pixels (samples) and lines contained in the data set to convert the raw imagery to a useable image format. The information can be found in the 'lbl' file associated with the image file.
  2. How were the data generated, processed, and modified?
    Date: unknown (process 1 of 10)
    A new, blank georeferenced database was created utilizing the PCI Remote Sensing software. This 'pix' file was defined using the maximum extents of the two required, adjacent 50m GLORIA mosaics. The GLORIA images original projection (Albers Equal Area), resolution, and datum (Clarke 1866) were used to define the new 'pix' file. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • Gloria01
    • mos13.raw & mos14.raw
    Data sources produced in this process:
    • mos13_14.pix
    Date: unknown (process 2 of 10)
    The two raw (BIL) images, mos13.raw & mos14.raw, were imported and placed in the PCI 'pix' database by specifying their starting line and pixel coordinates in the new database. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • mos13_14.pix
    • mos13.raw & mos14.raw
    Data sources produced in this process:
    • mos13_14.pix
    Date: unknown (process 3 of 10)
    Utilizing the PCI Remote Sensing software, a corresponding subarea of the GLORIA data was extracted and added to the existing utme00.pix file. This process extracted a selected area of the GLORIA data that fell within the defined SeaMARC1A Mississippi Fan study area. Coincident to the sub-area being extracted, the image was re-projected to UTM. The final, geo-referenced image was added to the utme00.pix database where the completed SeaMARC1A mosaic had been placed. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • mos13_14.pix
    Data sources produced in this process:
    • utme00.pix - chan 2
    Date: 04-Sep-1998 (process 4 of 10)
    Using the PCI Remote Sensing software, a linear contrast stretch was applied to the image. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • utme00.pix - channel 2
    Data sources produced in this process:
    • utme00.pix - channel 4
    Date: 04-Sep-1998 (process 5 of 10)
    The completed 25 m Gulf of Mexico GLORIA sidescan sonar data detail area was exported from the PCI 'pix' database as a GEOTIFF image with an associated ARC "world" file. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • utme00.pix - chan 2
    Data sources produced in this process:
    • raw/gloria.tif
    Date: 04-Sep-1998 (process 6 of 10)
    The completed and radiometrically enhanced 25 m Gulf of Mexico GLORIA sidescan sonar data detail area was exported from the PCI 'pix' database as a GEOTIFF image with an associated ARC "world" file. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • utme00.pix - chan 4
    Data sources produced in this process:
    • enhanced/gloria.tif
    Date: 04-Sep-1998 (process 7 of 10)
    The completed 25 m Gulf of Mexico GLORIA sidescan sonar data detail area was exported from the PCI 'pix' database as a JPG image with an associated ARC "world" file. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • utme00.pix - chan 2
    Data sources produced in this process:
    • enhanced/gloria.jpg
    Date: 04-Sep-1998 (process 8 of 10)
    The completed and radiometrically enhanced 25 m Gulf of Mexico GLORIA sidescan sonar data detail area was exported from the PCI 'pix' database as a JPG image with an associated ARC "world" file. Person who carried out this activity:
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
    Data sources used in this process:
    • utme00.pix - chan 4
    Data sources produced in this process:
    • enhanced/gloria.jpg
    Date: 22-Aug-2023 (process 9 of 10)
    Edited the metadata to remove errors flagged by MP. Filled out the citation information including adding the edition, suggested citation, adding the DOI link and a link to the data page. Added USGS Thesaurus and ISO 19115 Topic Category theme keywords. Added the link to the browse graphic. Removed unrequired elements with a value of "unknown". Indicated in some required elements that information was unavailable from the original metadata. Added links to the source citations. Additional small edits to the metadata were made to be consistent with current standards. Updated the distribution liability to an approved FSP disclaimer statement. Updated the distribution section to provide links to the data. The metadata date was updated, but not the metadata contact. The metadata contact email was updated to a valid link with an explanation in the contact instructions (20230822). The metadata available from a harvester may supersede metadata available from the publication. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    (508) 548-8700 x2251 (voice)
    (508) 457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 06-Aug-2024 (process 10 of 10)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?
    Paskevich(comp.), V., 2000, Gulf of Mexico GLORIA Sidescan Sonar Geologic Interpretation: ArcView Data Coverages: USGS Open-File Report 00-019, USGS Coastal and Marine Geology Team, U.S. Geological Survey, Woods Hole, MA.

    Online Links:

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

  1. How well have the observations been checked?
    no attributes associated with the image
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    complete
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on this data set.

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 The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U. S. Geological Survey
    Attn: Valerie Paskevich
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov
  2. What's the catalog number I need to order this data set? gloria image in either TIF or JPEG format
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    An image viewer, image processing or GIS software package capable of importing a GEOTIFF or JPEG format file. If the georeferencing information cannot be automatically imported from the image file, the user may wish to obtain the georeferencing information contained in a separate file, gloria.txt, in the data/imagery/raw and data/imagery/enhanced directory.

Who wrote the metadata?

Dates:
Last modified: 06-Aug-2024
Metadata author:
U. S. Geological Survey
Attn: Valerie Paskevich
Computer Specialist
384 Woods Hole Rd.
Woods Hole, MA
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the person is no longer with USGS.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2000-352/gloria_meta.faq.html>
Generated by mp version 2.9.51 on Tue Aug 6 15:07:13 2024