Identification_Information:
  Citation:
    Citation_Information:
      Originator: Page C. Valentine
      Originator: Lian A. Scully
      Originator: Sarah J. Fuller
      Publication_Date: 2005
      Title: ridges1.shp:  Boulder ridges greater than or equal to 1 m high on the sea floor of the Stellwagen Bank National Marine region.
      Edition: 1.0
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: Scientific Investigations Map
        Issue_Identification: 2840
      Publication_Information:
        Publication_Place: Woods Hole Science Center, Woods Hole, MA
        Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
      Online_Linkage: http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges1.zip
      Larger_Work_Citation:
        Citation_Information:
          Originator: Page C. Valentine
          Publication_Date: 2005
          Title: 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
          Edition: 1.0
          Series_Information:
            Series_Name: Scientific Investigations Map
            Issue_Identification: 2840
          Publication_Information:
            Publication_Place: Woods Hole Science Center, Woods Hole, MA
            Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
          Online_Linkage: http://pubs.usgs.gov/sim/2005/2840/
  Description:
    Abstract: This data set contains the locations of boulder ridges greater than or equal to 1 meter in height in the Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts, an area of approximately 1100 nautical square miles.  The Stellwagen Bank NMS Mapping Project is designed to provide detailed maps of the Stellwagen Bank region's environmental habitats and the first complete multibeam topographic and sea floor characterization maps of a significant region of the shallow EEZ.  The boulder ridges were identified using multibeam topographic imagery and backscatter intensity of the seabed and video and photographic images collected from 1994 to 2003.
    Purpose: Development of interpretive seabed maps, sea floor imagery, and a GIS database that are accessible to scientists, policymakers, managers, and the general public.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2005
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -70.599953
      East_Bounding_Coordinate: -70.035574
      North_Bounding_Coordinate: 42.799918
      South_Bounding_Coordinate: 42.083438
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: General
      Theme_Keyword: Geographic Information Systems
      Theme_Keyword: GIS
      Theme_Keyword: U.S. Geological Survey
      Theme_Keyword: USGS
      Theme_Keyword: Coastal and Marine Geology Program
      Theme_Keyword: CMGP
      Theme_Keyword: Woods Hole Science Center
      Theme_Keyword: WHSC
      Theme_Keyword: topographic data
      Theme_Keyword: sea floor topography
      Theme_Keyword: bathymetry
      Theme_Keyword: boulder ridges
      Theme_Keyword: sea floor features
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: oceans and estuaries
      Theme_Keyword: geoscientificInformation
    Place:
      Place_Keyword_Thesaurus: General
      Place_Keyword: Massachusetts
      Place_Keyword: MA
      Place_Keyword: Stellwagen Bank National Marine Sanctuary
      Place_Keyword: SBNMS
      Place_Keyword: Shallow EEZ
      Place_Keyword: EEZ
      Place_Keyword: Gulf of Maine
      Place_Keyword: Atlantic Ocean
      Place_Keyword: Boston
  Access_Constraints: none
  Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution.  Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Page C. Valentine
        Contact_Organization: U.S. Geological Survey
      Contact_Position: Research Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: U.S. Geological Survey
        Address: 384 Woods Hole Rd.
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2239
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: pvalentine@usgs.gov
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
Data_Quality_Information:
  Logical_Consistency_Report: No additional checks for topological consistency were performed on the data.
  Lineage:
    Process_Step:
      Process_Description: Boulder ridges were visually identified using the Stellwagen Bank sun-illuminated multibeam sonar image combined with backscatter intensity images, and where available, video and/or photographic imagery from the region and then digitized using the Editor toolbar in ArcMap.
      Source_Produced_Citation_Abbreviation: ridges1.shp
      Source_Produced_Citation_Abbreviation: ridges1.dbf
      Source_Produced_Citation_Abbreviation: ridges1.shx
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 2250
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Mercator
        Mercator:
          Standard_Parallel: 41.650000
          Longitude_of_Central_Meridian: -70.316667
          False_Easting: 0.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000128
          Ordinate_Resolution: 0.000128
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: ridges1
      Entity_Type_Definition: Shapefile Attribute Table
      Entity_Type_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: Area (square meters) covered by each boulder ridge.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 967.941727
          Range_Domain_Maximum: 201104.743604
          Attribute_Units_of_Measure: square meters
          Attribute_Measurement_Resolution: .000001
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: Perimeter (meters) of each boulder ridge.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 119.283102
          Range_Domain_Maximum: 4850.279050
          Attribute_Units_of_Measure: meters
          Attribute_Measurement_Resolution: .000001
    Attribute:
      Attribute_Label: Hectares
      Attribute_Definition: Hectares covered by each boulder ridge.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.096794
          Range_Domain_Maximum: 20.110474
          Attribute_Units_of_Measure: hectares
          Attribute_Measurement_Resolution: .000001
    Attribute:
      Attribute_Label: MIN
      Attribute_Definition: Base of ridge, in meters above sea level (a negative value).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -120.559998
          Range_Domain_Maximum: -17.309999
          Attribute_Units_of_Measure: meters
          Attribute_Measurement_Resolution: .000001
    Attribute:
      Attribute_Label: MAX
      Attribute_Definition: Top of ridge, in meters above sea level (a negative value).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -110.980003
          Range_Domain_Maximum: -10.720000
          Attribute_Units_of_Measure: meters
          Attribute_Measurement_Resolution: .000001
    Attribute:
      Attribute_Label: RANGE
      Attribute_Definition: Height of ridge (meters)  calculated by subtracting top of ridge (max) from base of ridge (min).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 18.370001
          Attribute_Units_of_Measure: meters
          Attribute_Measurement_Resolution: .000001
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Page C. Valentine
        Contact_Organization: U.S. Geological Survey
      Contact_Position: Research Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: U.S. Geological Survey
        Address: 384 Woods Hole Rd.
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2239
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: pvalentine@usgs.gov
  Resource_Description: Downloadable Data
  Distribution_Liability:
    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.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: SHP
        Format_Version_Number: 3,3
        Format_Specification: ESRI shapefile
        Format_Information_Content: The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml.  An ASCII version of the metadata file.  A browse graphic showing the data layer coverage and extent (optional).
        File_Decompression_Technique: zip
        Transfer_Size: 2.202
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges1.zip
        Offline_Option:
          Offline_Media: DVD-ROM
          Recording_Capacity:
            Recording_Density: 4.75
            Recording_Density_Units: Gbytes
          Recording_Format: UDF
    Fees: None
  Technical_Prerequisites: 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 the importing data.  A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.
Metadata_Reference_Information:
  Metadata_Date: 20050822
  Metadata_Review_Date: 20050822
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Page C. Valentine
      Contact_Position: Research Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: U.S. Geological Survey
        Address: 384 Woods Hole Rd.
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2239
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: pvalentine@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
