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  U.S. Geological Survey Open-File Report 02-002

BCKGRND: Long Island Sound project background and data extent

Metadata also available as: HTML - TEXT

Frequently-anticipated questions:


What does this data set describe?

    Title: BCKGRND: Long Island Sound project background and data extent
    Abstract:
    This ArcView shapefile represents the extent of the Long Island Sound project view and is used as a general background.

  1. How should this data set be cited?

    Paskevich, Valerie, 20020630, BCKGRND: Long Island Sound project background and data extent: U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, Larry, and Paskevich, Valerie, 200206, Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release: Open-File Report 02-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -75.060498
    East_Bounding_Coordinate: -70.994943
    North_Bounding_Coordinate: 42.057032
    South_Bounding_Coordinate: 40.003968

  3. What does it look like?

    ../../../htmldocs/images/browse/bckgrnd.gif (GIF)
    Image used as a general background and shows the extent of the data layers that fall within the Long Island Sound project area.

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

    Calendar_Date: 30-Jun-2002
    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):

      • G-polygon (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 0.001. Longitudes are given to the nearest 0.001. 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 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    bckgrnd.dbf
    Shapefile attribute file (Source: Compiler)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    ValueDefinition
    PolygonESRI polygon shapefile

    Coordinates defining the features.

    ID
    Numeric identifier assigned to polygon area. (Source: Software computed)


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?

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov


Why was the data set created?

This ArcView shapefile may be used as a general basemap data layer to illustrate the extent of the map view and as a contrast for laying the additional data layers.


How was the data set created?

  1. From what previous works were the data drawn?

    graphic1 (source 1 of 1)
    , graphic1.

    Type_of_Source_Media: computer program
    Source_Contribution:
    A simple graphic outline of the extent of the Long Island Sound data layers was drawn on the screen using ArcView 3.2

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

    Date: 25-Mar-2002 (process 1 of 1)
    The drawn graphic was converted to a shapefile using the ArcView Xtools extension.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • graphic1

    Data sources produced in this process:

    • bckgrnd.dbf
    • bckgrnd.shp
    • bckgrnd.shx


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

  1. How well have the observations been checked?

    Attributes were automatically generated by the ArcView Xtools extension.

  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?

    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 its 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.

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

    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    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?

    Long Island Sound: bckgrnd.shp

  3. What legal disclaimers am I supposed to read?

    Although this derived data set and its 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 or ESRI 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?

    This GIS layer is available in an ArcView shapefile format. Users must have ArcView 3.0 or later, or another GIS application capable of importing the data.


Who wrote the metadata?

Dates:
Last modified: 07-May-2002

Metadata author:
U.S. Geological Survey
c/o Valerie Paskevich
Computer Specialist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov

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


Generated by mp version 2.7.3 on Tue May 07 11:31:28 2002