INDEX: Browse map index areas

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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: INDEX: Browse map index areas

Abstract:

This data layer was created as a basemap data layer to define the area of the browse maps for the Gulf of Maine and Georges Bank surficial sediment GIS.

1. How should this data set be cited?

   Paskevich, Valerie, 2003, INDEX: Browse map index areas: U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/2003/of03-001/data/basemaps/boundaries/index.zip>
   • <http://pubs.usgs.gov/of/2003/of03-001/data/basemaps/boundaries/index.zip>

   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:

   • <http://pubs.usgs.gov/of/2003/of03-001>
   • <http://woodshole.er.usgs.gov/openfile/of03-001>

   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: -72.035605

   East_Bounding_Coordinate: -65.699447

   North_Bounding_Coordinate: 44.625126

   South_Bounding_Coordinate: 39.471625

3. What does it look like?

   index (GIF)

   Image map showing index outlines of detailed browse maps generated for the publication

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 (12)

   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?

   index

   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.

   ID

   Sequential number assigned to graphic. (Source: Software Computed)

   Range of values
   Minimum:	0
   Maximum:	11
   Resolution:	1

   MAP

   Numeric value assigned to map area, (Source: Valerie Paskevich)

   Range of values
   Minimum:	1
   Maximum:	12
   Resolution:	1

   NAME

   Name given to browse map area. (Source: Valerie Paskevich)

   Value	Definition
   Casco Bay	Map2; Casco Bay Region
   New Hampshire Inner Shelf	Map 3; New Hampshire Inner Shelf Region
   Boston Harbor	Map 4; Boston Harbor Region
   Stellwagen Bank	Map 5; Stellwagen Bank Region
   Cape Cod Bay	Map 6; Cape Cod Bay Region
   Nantucket Sound	Map 7; Nantucket Sound Region
   Buzzards Bay	Map 8; Buzzards Bay Region
   Narragansett Bay	Map 9; Narragansett Bay Region
   Block Island Sound	Map Area 10; Block Island Sound Region
   "Mud Patch" South of Martha's Vineyard	Map Area 11; "Mud Patch" area South of Martha's Vineyard
   Georges Bank and Great South Channel	Map Area 12; Georges Bank and Great South Channel Region
   Penobscot Bay	Map Area 1; Penobscot Bay Region

   Character field

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
   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
   

This GIS data layer defined the general area of the available browse maps. Both PDF and JPEG browse maps of the defined areas were generated and included in the digital publication.

1. From what previous works were the data drawn?

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

   Date: 29-Dec-2002 (process 1 of 1)

   Twelve graphic rectangles were drawn to define the general area of the individual browse maps to be generated. The graphic was then converted to an ArcView shapefile using the Xtools extension. The shapefile attribute table was then modified to include the MAP number and NAME assigned to the map area.

   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:

   • index.dbf
   • index.shp
   • index.shx

1. How well have the observations been checked?

   All attributes were entered and checked by the compilers in a consistent manner.

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?

   The data layer includes the extent of the 12 browse maps generated for the publication.

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

   No duplicate features are present. No additional checks for topological consistency were performed on this data.

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, index.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?
   • Availability in digital form:

     Data format:	Three files (index.shp, index.dbf, index.shx) comprising the ArcView point shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format ArcView shapefile (version 3.2) ESRI point shapefile Size: 0.112
     Media you can order:	CD-ROM (Density 650 Mbytes) Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.

   • Cost to 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.

Dates:

Last modified: 15-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)

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