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

BCKGRND: Long Island Sound project background and data extent

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
• 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 data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

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:

   • <http://woodshole.er.usgs.gov/openfile/of02-002/data/basemaps/>

   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:

   • <http://woodshole.er.usgs.gov/openfile/of02-002>

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)

   Value	Definition
   Polygon	ESRI polygon shapefile

   Coordinates defining the features.

   ID

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

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?

   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
   

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.

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

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.

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?
   • Availability in digital form:

     Data format:	The five ArcView files (bckgrnd.dbf, bckgrnd.shp, bckgrnd.shx, bckgrnd.avl, bckgrnd.prj) comprising a general data layer showing the U.S. bckgrnd falling within the USA basemap data layer distributed with the Long Island Sound ArcView project file and an ASCII version of the metatdata file. in format ArcView (version 3.2) ESRI polygon shapefile Size: 4.31 Kbytes
     Network links:
     Media you can order:	DVD (Density 4.75 Gigabytes) Note: The user must have a system with a DVD capable of reading an UDF standard DVD-R disk. To browse the information contained on this disk, the user must also have a current version of a WWW browser available.

   • Cost to 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.

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)