R/V FARNELLA 90-3 navigation data (tracklines)

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Frequently anticipated questions:

What does this data set describe?

Title: R/V FARNELLA 90-3 navigation data (tracklines)
Abstract:
This ArcView GIS data layer contains the navigation fix points for the R/V FARNELLA 90-3 cruise.
Supplemental_Information:
This file contains only the locations of the individual navigation points. Navigation fixes were recorded in the mrg-mrg format at a two minute interval. The date and time information is contained as attribute information in the trackp.shp file.
  1. How might this data set be cited?
    Paskevich, Valerie, 20000310, R/V FARNELLA 90-3 navigation data (tracklines): Open-File Report 2000-352, U. S. Geological Survey, Woods Hole Field Center.

    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: -86.6501
    East_Bounding_Coordinate: -82.4405
    North_Bounding_Coordinate: 27.9559
    South_Bounding_Coordinate: 26.1234
  3. What does it look like?
    https://pubs.usgs.gov/of/2000/of00-352/data/nav/browse/trackl.gif (R/V FARNELLA 90-3 trackline displayed over the SeaMARC 1A sidescan sonar mosaic)
    GIF
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 25-Mar-1990
    Ending_Date: 08-Apr-1990
    Currentness_Reference:
    Publication Date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data (polyline)
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Complete chain (1)
    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 .0005. Longitudes are given to the nearest .0005. Latitude and longitude values are specified in Decimal degrees. 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?
    trackl.dbf
    Shapefile Attribute Table (Source: None)
    Integer1
    The Integer1 attribute is carried over from the PCI Remote Sensing software vector segment information. It is an internal control parameter and has no relevance to the use of the data. (Source: User Defined)
    Range of values
    Minimum:0
    Maximum:0

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Valerie Paskevich
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey
    Attn: David C. 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?

The trackl.shp file shows the R/V FARNELLA 90-3 trackline. 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?
    R/V FARNELLA 90-3 mrg-mrg navigation (source 1 of 1)
    Twichell(comp.), David, Unknown, Loran-C and GPS navigation.

    Type_of_Source_Media: magnetic tape
    Source_Contribution:
    Navigation for the cruise was collected every two minutes and recorded digitally to magnetic tape in the mrg-mrg format.
  2. How were the data generated, processed, and modified?
    Date: Unknown (process 1 of 6)
    The navigation data was downloaded from the 9-track tape and used in the processing of the sidescan sonar data. Person who carried out this activity:
    Dave Twichell
    U. S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • R/V FARNELLA 90-3 mrg-mrg navigation
    Data sources produced in this process:
    • nav.txt
    Date: 10-Jan-2000 (process 2 of 6)
    The ASCII text file, nav.txt, was editted to create a simple file of longitude and latitude coordinates. Person who carried out this activity:
    Valerie Paskevich
    U. S. Geological Survey
    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:
    • nav.txt
    Data sources produced in this process:
    • latlon.txt
    Date: 10-Jan-2000 (process 3 of 6)
    The ASCII file of position coordinates was imported into a vector segment of the PCI Remote Sensing software file utme00.pix. Person who carried out this activity:
    Valerie Paskevich
    U. S. Geological Survey
    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:
    • latlon.txt
    Data sources produced in this process:
    • utme00.pix
    Date: 10-Jan-2000 (process 4 of 6)
    The newly created vector segment was displayed using the PCI program Imageworks and verified. No errors or inconsistencies were found, so the vector segment was output as an ArcView shapefile. Person who carried out this activity:
    Valerie Paskevich
    U. S. Geological Survey
    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
    Data sources produced in this process:
    • trackl.shp
    Date: 18-Jul-2024 (process 5 of 6)
    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. Modified the dataset title slightly to be more descriptive. Added USGS Thesaurus and ISO 19115 Topic Category theme keywords. Added the link to the browse graphic. Additional small edits to the metadata were made to be consistent with current standards and fix obvious errors. Updated the distribution liability to an approved FSP disclaimer statement. Updated the distribution format and provided links to the data. Removed a redundant distribution format. 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 (20240718). 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 6 of 6)
    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?

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

  1. How well have the observations been checked?
    None
  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?
    The trackl.shp file contains all the navigation fixes for the entire R/V FARNELLA 90-3 cruise. Navigation fixes were recorded every two minutes in the mrg-mrg format.
  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 Although this derived data set and it's lineage dataset have been used by the USGS, no warranty, expressed or implied, is made by the USGS 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 the USGS in the use of these data or related materials. 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)
    David Twichell
    U.S. Geological Survey
    oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
  2. What's the catalog number I need to order this data set? Mississippi Fan: trackl.shp
  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?
    The R/V FARNELLA 90-3 tracklines are available in an ArcView shapefile format. The user must have ESRI's ArcView 3.0 or greater software to read and process the data file. In lieu of Arcview, the user may utilize another GIS application package capable of importing the data.

Who wrote the metadata?

Dates:
Last modified: 06-Aug-2024
Metadata author:
Valerie Paskevich
U. S. Geological Survey
Computer Specialist
384 Woods Hole Road
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/trackl_meta.faq.html>
Generated by mp version 2.9.51 on Tue Aug 6 15:07:13 2024