Cape Cod National Seashore Polygon Shapefile - Geographic Coordinate System

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Frequently-anticipated questions:

What does this data set describe?

Title:
Cape Cod National Seashore Polygon Shapefile - Geographic Coordinate System
Abstract:
In order to test hypotheses about groundwater flow under and into estuaries and the Atlantic Ocean, geophysical surveys, geophysical probing, submarine groundwater sampling, and sediment coring were conducted by U.S. Geological Survey (USGS) scientists at Cape Cod National Seashore (CCNS) from 2004 through 2006. Coastal resource managers at CCNS and elsewhere are concerned about nutrients that are entering coastal waters via submarine groundwater discharge, which are contributing to eutrophication and harmful algal blooms. The research carried out as part of the study described here was designed, in part, to help refine assumptions required by earlier versions of models about the nature of submarine groundwater flow and discharge at CCNS. This study was conducted in four phases, with a variety of field techniques and equipment employed in each phase. Phase 1 consisted of continuous resistivity profiling (CRP) surveys of the entire study area conducted in 2004. Phase 2 consisted of CRP ground-truthing via resistivity probe measurements and submarine groundwater sampling from hydraulically-drive piezometers using a barge in the Salt Pond/Nauset Marsh area in 2005. Phase 3 consisted of supplemental detailed CRP surveys in the Salt Pond/Nauset Marsh area in 2006. Finally, Phase 4 consisted of sediment coring and porewater extraction in the Salt Pond/Nauset Marsh area later in 2006 to supplement the 2005 sampling.
Supplemental_Information:
Most of the coverages the Cape Cod Commission provided to MassGIS were digitized from paper maps using a Calcomp 9100 digitizer and ESRI's Arc/Info. Source material varies by layer. Some original manuscripts were obtained from the 1990 APCC Atlas; others came from town sources. Other layers were produced with on-screen digitizing in ArcEdit. Attribute information for parcel and zoning coverages came from town planning and engineering departments' and assessors' databases. MassGIS performed quality checking on all layers and standardized all attribute tables before creating the libraries.
  1. How should this data set be cited?

    Commission, Cape Cod , Unknown, Cape Cod National Seashore Polygon Shapefile - Geographic Coordinate System: Open-File Report 2006-1169, 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.

    Cross, VeeAnn A. , Bratton, John F. , Crusius, John, Colman, John A. , and McCobb, Timothy D. , 2008, Submarine Hydrogeological Data from Cape Cod National Seashore: Open-File Report 2006-1169, 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: -70.245392
    East_Bounding_Coordinate: -69.927802
    North_Bounding_Coordinate: 42.082358
    South_Bounding_Coordinate: 41.680579

  3. What does it look like?

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

    Calendar_Date: unknown
    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 (6)

    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?

    ccnss_geog

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    AREA

    PERIMETER

    CCNSS_

    CCNSS_ID

    ACREAGE

    Entity_and_Attribute_Overview:
    The dataset was acquired from MassGIS with these existing attributes. At least some of the attributes appear to be carried over from the ArcInfo processing. Since the projection of the dataset from MassGIS was Massachusetts State Plane (NAD83), Mainland Zone (Fipszone 2001), it is assumed that the Area and Perimeter values are in meters.

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?

    Cape Cod Commission for digitization and creation of the dataset.

  3. To whom should users address questions about the data?

    MassGIS
    251 Causeway Street, Suite 900
    Boston, MA 02114
    USA

    (617) 626-1000 (voice)
    (617) 626-1249 (FAX)

Why was the data set created?

This data layer provides the approximate location of the Cape Cod National Seashore.

How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Commission, Cape Cod .

    Source_Contribution:
    This is the location of the Cape Cod National Seashore as digitized by the Cape Cod Commission from parcel maps. The distributed dataset was registered to the Massachusetts State Plane Coordinate System (NAD83), Mainland Zone (Fipszone 2001) by MassGIS.

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

    Date: 2006 (process 1 of 1)
    Dataset reprojected from the Massachusetts State Plane Coordinate System (NAD83), Mainland Zone (Fipszone 2001) to geographic NAD83.

    Person who carried out this activity:

    VeeAnn A. Cross
    U.S. Geological Survey
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2251 (voice)
    (508) 457-2310 (FAX)
    vatnipp@usgs.gov

  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?

    This dataset is assumed to represent the complete coverage of the Cape Cod National Seashore.

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

    No additional checks for topological consistency other than visual inspection were performed on the data.

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 is freely redistributable with proper metadata and source attribution.

  1. Who distributes the data set?[Distributor contact information not provided.]

  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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. 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?

  5. What hardware or software do I need in order to use the data set?

    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 04-Aug-2008
Metadata author:
VeeAnn A. Cross
U.S. Geological Survey
Marine Geologist
384 Woods Hole Rd.
Woods Hole, MA 02543-1598

(508) 548-8700 x2251 (voice)
(508) 457-2310 (FAX)
vatnipp@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 Aug 04 09:38:40 2008