ATMX_HYS.SHP - 1995 National Assessment of Oil and Gas Resources of the United States: Thickness of Hydrate Stability Zone

Metadata also available as - [Outline] - [Parseable text]

Frequently-anticipated questions:


What does this data set describe?

Title:
ATMX_HYS.SHP - 1995 National Assessment of Oil and Gas Resources of the United States: Thickness of Hydrate Stability Zone
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 should this data set be cited?

    U.S. Geological Survey, 2005, ATMX_HYS.SHP - 1995 National Assessment of Oil and Gas Resources of the United States: Thickness of Hydrate Stability Zone: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole 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, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -96.189928
    East_Bounding_Coordinate: -65.864413
    North_Bounding_Coordinate: 41.157841
    South_Bounding_Coordinate: 23.837732

  3. What does it look like?

    <http://pubs.usgs.gov/of/2005/1071/data/assessments/atmx_hys/atmx_hys.gif> (GIF)
    Image showing the extent and coverage of the data layer.

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

    Calendar_Date: 1996
    Currentness_Reference: publication date

  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):

      • String (13)

    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 0.000000. Longitudes are given to the nearest 0.000000. 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?

    atmx_hys
    Shapefile Attribute Table. (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    THICK_M
    thickness of hydrate stability zone in meters (Source: user defined)

    Range of values
    Minimum:0
    Maximum:700
    Units:meters
    Resolution:1


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?

    Please credit Timothy S. Collett, USGS, as the originator of the dataset from which this GIS data layer is derived.

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

    U.S. Geological Survey
    c/o David Twichell
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

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


Why was the data set created?

This GIS data layer shows the calculated thickness of the gas hydrate stability zone in meters within the U.S. Exclusive Economic Zone for the Gulf of Mexico and Atlantic Ocean regions. The contour lines were compiled by Collett (1995) as part of the assessment of gas hydrate resources for the 1995 National assessment of United States oil and gas resources. The tabular data used to generate this shapefile were copied from Charpentier et al (1996).


How was the data set created?

  1. From what previous works were the data drawn?

    DDS-36 (source 1 of 1)
    Charpentier, Ronald R., Klett, T. R., Obuch, R. C., and Brewton, J. D., 1996, Tabular data, text, and graphical images in support of the 1995 National assessment of United States oil and gas resources: Digital Data Series 36, U.S. Geological Survey, Reston, VA.

    Online Links:

    Type_of_Source_Media: CD-ROM
    Source_Contribution:
    Gas hydrate stability zone contours - This CD-ROM contains files in support of the 1995 USGS National assessment of United States oil and gas resources (DDS-30), which was published separately and summarizes the results of a 3-year study of the oil and gas resources of the onshore and state waters of the United States. The study describes about 560 oil and gas plays in the United States; confirmed and hypothetical, conventional and unconventional. A parallel study of the Federal offshore is being conducted by the U.S. Minerals Management Service. This CD-ROM contains files in multiple formats, so that almost any computer user can import them into word processors and spreadsheets. The tabular data include some tables not released in DDS-30. No proprietary data are released on this CD-ROM, but some tables of summary statistics from the proprietary files are provided. The complete text of DDS-30 is also available, as well as many figures. Also included are some of the programs used in the assessment, in source code and with supporting documentation. A companion CD-ROM (DDS-35) includes the map data and the same text data, but none of the tabular data or assessment programs.

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

    Date: 01-May-2003 (process 1 of 4)
    The original file, atmx_hys.lin, was copied from DDS 36 where it had been stored in the Arc ungenerate format.

    Person who carried out this activity:

    VeeAnn Atnipp Cross
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2251 (voice)
    (508) 457-2310 (FAX)
    vatnipp@usgs.gov

    Data sources used in this process:
    • atmx_hys.lin

    (process 2 of 4)
    This file was read into ArcView 3.2 using an avenue script called loalin.ave which converted the ungenerate format to a shapefile. The file was made into a polyline shapefile, and the projection was kept as the original Albers Equal Area.

    (process 3 of 4)
    ArcToolbox was used to define the projection of the shapefile as Albers Equal Area, NAD83. The projection information used was listed by ESRI as: USA_Contiguous_Albers_Equal_Area_Conic_USGS.

    (process 4 of 4)
    The shapefile was then reprojected to Geographic, NAD83 using ArcToolbox, v. 8.2.

    Data sources produced in this process:

    • atmx_hys.shp

  3. What similar or related data should the user be aware of?

    Collett, T.S., 1996, Gas hydrate resources of the United States: Digital Data Series 30, U.S. Geological Survey, Reston, VA.

    Online Links:

    This is part of the following larger work.

    Gautier, Donald L. (editor), Dolton, Gordon L (editor), Takahashi, Kenneth I. (editor), and Varnes, Katharine L. (editor), 1996, 1995 National Assessment of United States Oil and Gas Resources - Results, Methodology, and Supporting Data: Digital Data Series 30, U.S. Geological Survey, Reston, VA.

    Online Links:

    Charpentier, R.R., Klett, T.R., Obuch, R.C., and Brewton, J.D., 1996, Tabular data, text, and graphical images in support of the 1995 National assessment of the United States oil and gas reservoir: Digital Data Series 36, U.S. Geological Survey, Reston, VA.

    Online Links:


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?

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

    These data are believed to be logically consistent.


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)

    U.S. Geological Survey
    c/o Deborah Hutchinson
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2263 (voice)
    (508) 457-2310 (FAX)
    dhutchinson@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 their lineage datasets 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.

  4. How can I download or order the data?

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

    These 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: 02-Dec-2005
Last Reviewed: 06-Feb-2004
Metadata author:
David Twichell
U.S. Geological Survey
Oceanographer
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x 2266 (voice)
(508) 457-2310 (FAX)
dtwichell@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Generated by mp version 2.8.6 on Mon Dec 12 11:32:19 2005