quadbnd.shp: Digital polygons 18 individual of quadrangles for the Stellwagen Bank National Marine Sanctuary region.

Metadata also available as

Frequently-anticipated questions:


What does this data set describe?

Title:
quadbnd.shp: Digital polygons 18 individual of quadrangles for the Stellwagen Bank National Marine Sanctuary region.
Abstract:
The map area shown in Scientific Investigations Map 2840 is a composite of 18 individual quadrangle maps that represent a total area of 1,100 square nautical miles in the Stellwagen Bank National Marine Sanctuary region. The quadrangles are numbered 1 though 18, beginning in the southwest corner of the map region and increasing from left to right. The dimensions of the map area of each quadrangle are approximately 8 nm east-to-west and 7 nm north-to-south. The map region was subdivided into these 18 quadrangles so that high-resolution maps at a scale of 1:25,000 could be presented in both paper and digital format at a size convenient for the user.
  1. How should this data set be cited?

    Valentine, Page C. , Scully, Lian A. , and Fuller, Sarah J. , 2005, quadbnd.shp: Digital polygons 18 individual of quadrangles for the Stellwagen Bank National Marine Sanctuary region.: Scientific Investigations Map 2840, 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.

    Page C. Valentine, editor, 2005, Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts: Scientific Investigations Map 2840, U. S. geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -70.599998
    East_Bounding_Coordinate: -70.033333
    North_Bounding_Coordinate: 42.799999
    South_Bounding_Coordinate: 42.083328

  3. What does it look like?

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

    Calendar_Date: 2005
    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 (18)

    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?

    quadbnd

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    AREA
    Area of feature in internal units squared. (Source: ESRI)

    Positive real numbers that are automatically generated.

    PERIMETER
    Perimeter of feature in internal units. (Source: ESRI)

    Positive real numbers that are automatically generated.

    QUADBND_ID
    Quadrangle number

    ValueDefinition
    1-18 


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?

    Page C. Valentine
    U.S. Geological Survey
    Research Geologist
    U.S. Geological Survey
    Woods Hole, MA 02543-1598
    USA

    (508)548-8700 x2239 (voice)
    (508) 457-2310 (FAX)
    pvalentine@usgs.gov


Why was the data set created?

Development of interpretive seabed maps, sea floor imagery, and a GIS database that are accessible to scientists, policymakers, managers, and the general public.


How was the data set created?

  1. From what previous works were the data drawn?

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

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


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:
Public Domain data from the U.S. Government are freely redistributed 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)

    Page C. Valentine
    U.S. Geological Survey
    Research Geologist
    U.S. Geological Survey
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2239 (voice)
    (508) 457-2310 (FAX)
    pvalentine@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 these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. geological Survey as to the accuracy of the data. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 26-Sep-2005
Metadata author:
U.S. Geological Survey
c/o Page C. Valentine
Research Geologist
U.S. Geological Survey
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2239 (voice)
(508) 457-2310 (FAX)
pvalentine@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 Sep 26 18:37:17 2005