EXTENT: GIS Project background and extent

Metadata also available as: OUTLINE - TEXT

Frequently-anticipated questions:


What does this data set describe?

    Title: EXTENT: GIS Project background and extent
    Abstract:
    This data layer was created as a basemap data layer to define the project extent for the Gulf of Maine and Georges Bank surficial sediment GIS.

  1. How should this data set be cited?

    Paskevich, Valerie, 2003, EXTENT: GIS Project background and extent: U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., Fitzgerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Data is released via CD-ROM media. This digital publication may also be available via the web at pubs.usgs.gov

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -77.877236
    East_Bounding_Coordinate: -60.905452
    North_Bounding_Coordinate: 48.277749
    South_Bounding_Coordinate: 33.054966

  3. What does it look like?

    extent.gif (GIF)
    Image map showing extent and of data layer coverage used to define project extent.

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

    Calendar_Date: 01-Nov-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 (0)

    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 0.0001. Longitudes are given to the nearest 0.0001. 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?

    extent.dbf
    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.


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
    Information Technology 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 GIS data layer defined the project extent and was used to clip the miscellaneous basemap layers.


How was the data set created?

  1. From what previous works were the data drawn?

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

    Date: 01-Nov-2002 (process 1 of 1)
    A simple graphic rectangle was drawn to define the GIS extent. The graphic was then converted to an ArcView shapefile using the Xtools extension.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Technology 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:

    • extent.dbf
    • extent.shp
    • extent.shx


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?


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: None

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

    Valerie Paskevich
    U.S. Geological Survey
    Information Technology 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?

    Downloadable Data; Regional Mapping of Surficial Sediments: Gulf of Maine and Georges Bank, Aggregates and Habitats Projects, extent.shp

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey, 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?

    The data is available in ArcView shapefile format. The user must have 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 data.


Who wrote the metadata?

Dates:
Last modified: 03-Mar-2003

Metadata author:
Valerie Paskevich
U.S. Geological Survey
Information Technology 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 Mon Mar 03 10:07:35 2003

OFR03-001 Home | Introduction | Nomenclature | Browse Maps | Data Catalog | Data Dictionary


[an error occurred while processing this directive]