R/V FARNELLA cruise 90-4 cores

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Frequently anticipated questions:


What does this data set describe?

Title: R/V FARNELLA cruise 90-4 cores
Abstract:
This GIS overlay is a component of the U.S. Geological Survey, Woods Hole Science Center's, Gulf of Mexico 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.
  1. How might this data set be cited?
    Twichell, David, 2005, R/V FARNELLA cruise 90-4 cores: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Twichell, D.C., Cross, V.A., Paskevich, V.F., Hutchinson, D.R., Winters, W.J., and Hart, P.E., 2005, GIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey: Open-File Report 2005-1071, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -86.445833
    East_Bounding_Coordinate: -84.673500
    North_Bounding_Coordinate: 26.738560
    South_Bounding_Coordinate: 25.273500
  3. What does it look like?
    http://pubs.usgs.gov/of/2005/1071/data/cores/farnella/farn_cores-thumb.gif (GIF)
    Thumbnail image showing the extent and coverage of the data layer.
    http://pubs.usgs.gov/of/2005/1071/data/cores/farnella/farn_cores.gif (GIF)
    Image showing the extent and coverage of the data layer.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 12-Apr-1990
    Ending_Date: 26-Apr-1990
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  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):
      • point (67)
    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. 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?
    farn_cores_nad83
    Shapefile Attribute Table (Source: None)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    COREID
    Letter and number identifier given to each core (Source: USGS) Character field identifying the core site
    LAT
    Latitude coordinate in decimal degrees of core location. (Source: USGS)
    Range of values
    Minimum:25.273500
    Maximum:26.738560
    Units:decimal degrees
    Resolution:.000001
    LON
    Longitude coordinate in decimal degrees of core location. (Source: USGS)
    Range of values
    Minimum:-86.445833
    Maximum:-84.673500
    Units:decimal degrees
    Resolution:.000001
    DEPTH
    Measured water depth, in meters, at core location. (Source: USGS)
    Range of values
    Minimum:3060
    Maximum:3410
    Units:meters
    Resolution:1
    LENGTH
    Measured length of cores in centimeters (Source: USGS)
    Range of values
    Minimum:0
    Maximum:655
    Units:centimeters
    Resolution:1
    HOTLINK
    Path to image linked to core site (Source: USGS) Character field defining the path to the image linked to the core site

Who produced the data set?

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

Why was the data set created?

This ArcView GIS layer contains a summary of the locations, depths, and lengths of the cores collected aboard the R/V FARNELLA 90-4 cruise from 12 -26 April 1990. The cores were collected from the eastern Gulf of Mexico to study depositional processes on the Mississippi Fan and along the base of the Florida Escarpment. Cores were collected with either a piston or gravity corer and were all less than 6.55 m in length. This information has been imported from a publication by Paskevich et al. (2001). Further discussion of the information can be found in Nelson et al. (1992).

How was the data set created?

  1. From what previous works were the data drawn?
    farn90-3_4.txt (source 1 of 2)
    Twichell(comp.), David, Unknown, R/V FARNELLA 90-4 post-cruise report.

    Online Links:

    Type_of_Source_Media: paper
    Source_Contribution:
    An ASCII text file listing the core id's, position, depth and length was attached to the R/V FARNELLA 90-3 90-4 post-cruise report. The text file was edited to create a tabular list that was read into ArcView.
    Information unavailable from original metadata. (source 2 of 2)
    Paskevich, V., Twichell, D., and Schwab, W., 2001, SeaMARC 1A sidescan sonar mosaic, cores and depositional interpretation of the Mississippi Fan: ArcView GIS data release: Open-File Report 00-352, U.S. Geological Survey, Reston, VA.

    Online Links:

    Type_of_Source_Media: digital files
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: 05-Oct-1999 (process 1 of 8)
    An ASCII text file listing the core id's, position, depth and length was attached to the R/V FARNELLA 90-3 90-4 post-cruise report. The text file was editted to create a tabular list that was read into ArcView. Minor editting was done to the table for consistency. A final field, DESC, was added and provides a link to GIF images containing an overview description of some of the cores. Person who carried out this activity:
    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    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:
    • farn90-3_4.txt
    Data sources produced in this process:
    • cores.dbf
    • cores.shp
    • cores.shx
    Date: 15-May-2000 (process 2 of 8)
    A new field, HTMLlink, was added to the cores.dbf file. This field was edited to include the relative path and filename of the visual description for specific cores. This field is used as a hotlink in the windows arcview project file to open the core description in the web browser. Person who carried out this activity:
    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    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:
    • cores.dbf
    • cores.shp
    • cores.shx
    Data sources produced in this process:
    • cores.dbf
    • cores.shp
    • cores.shx
    Date: Unknown (process 3 of 8)
    Dataset copied and renamed Person who carried out this activity:
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x 2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • cores.shp
    Data sources produced in this process:
    • farn_cores.shp
    Date: Unknown (process 4 of 8)
    The shapefile was kept in geographic, but the datum was changed from NAD27 to NAD83 using Projection Wizard in ArcToolbox. Person who carried out this activity:
    David Twichell
    US Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x 2266 (voice)
    508-457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • farn_cores.shp
    Data sources produced in this process:
    • farn_cores_nad83.shp
    Date: 03-Nov-2016 (process 5 of 8)
    Edits to the metadata were made to fix any errors that MP v 2.9.34 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The link to the larger work citation in the Identification_Information section had to be fixed. The source information was incomplete and had to be modified to meet the standard. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. 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 Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 6 of 8)
    USGS Thesaurus keywords added to the keyword section. 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
    Date: 18-Nov-2019 (process 7 of 8)
    Crossref DOI link was added as the first link in the metadata. 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
    Date: 08-Sep-2020 (process 8 of 8)
    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, V., Twichell, D., and Schwab, W., 2001, SeaMARC 1A sidescan sonar mosaic, cores and depositional interpretation of the Mississippi Fan: ArcView GIS data release: Open-File Report 00-352, U. S. Geological Survey, Reston, VA.

    Online Links:

    This is part of the following larger work.

    Paskevich, V., Twichell, D., and Schwab, W., 2001, SeaMARC 1A sidescan sonar mosaic, cores and depositional interpretation of the Mississippi Fan: ArcView GIS data release: Open-File Report 00-352, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
    Nelson, CH, Twichell, DC, Schwab, WC, Lee, HJ, and Kenyon, NH, 1992, Upper Pleistocene turbidite sand beds and chaotic silt beds in the channelized, distal, outer-fan lobes of the Mississippi fan: Geology v. 20, p. 693-696, Geological Society of America, Boulder, CO.


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?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Core sample information is complete for the entire R/V FARNELLA 90-4 cruise.
  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:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  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? Downloadable data.
  3. What legal disclaimers am I supposed to read?
    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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: The DBF file contains the attribute data in dBase format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). in format SHP (version 3.3) ESRI point shapefile Size: 0.02
      Network links: http://pubs.usgs.gov/of/2005/1071/data/cores/farnella/farn_cores_nad83.zip
      Media you can order: DVD-ROM (Density 4.75 Gbytes) (format UDF)
    • Cost to order the data: None

  5. What hardware or software do I need in order to use the data set?
    The data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 16-Nov-2021
Metadata author:
Valerie Paskevich
U.S. Geological Survey
Information Specialist / GIS Coordinator
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 metadata contact is no longer with the USGS or the email is otherwise invalid.
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/ofr2005-1071/farn_cores_nad83.shp.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:30 2021