# rugged: Terrain Ruggedness Index for the Stellwagen Bank Mapping Project

Metadata also available as

## Metadata:

- Identification_Information
- Data_Quality_Information
- Spatial_Data_Organization_Information
- Spatial_Reference_Information
- Distribution_Information
- Metadata_Reference_Information

Identification_Information:
  Citation:
    Citation_Information:
      Originator: Page C. Valentine
      Publication_Date: 2005
      Title:
        rugged: Terrain Ruggedness Index for the Stellwagen Bank Mapping Project
      Geospatial_Data_Presentation_Form: raster digital data
      Publication_Information:
        Publication_Place: Woods Hole, MA
        Publisher: U.S. Geological Survey
      Online_Linkage:
        \\SGRIFFEE\C$\Documents and Settings\Sarah Griffee\My Documents\Page\dataforcd\rugged
      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 and Slope, and the Distribution of Boulder Ridges and Bedrock Outcrops in the Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts
          Edition: 1.0
          Geospatial_Data_Presentation_Form: CD-ROM
          Series_Information:
            Series_Name: U.S. Geological Survey Scientific Investigations Series Map
            Issue_Identification: SI-2840
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
  Description:
    Abstract:
      The Terrain Ruggedness Index (TRI) calculates the average difference in elevation between a small area (a center pixel of 13 x 13 m) and its surrounding area (neighboring pixels). The TRI was applied to the digital bathymetric grids of the seafloor of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts.
    Purpose:
      The Terrain Ruggedness Index provides an interpretation of the seabed features in the highly variable geomorphology of the Stellwagen Bank National Marine Sanctuary region. The seabed geometry is variable due to its glacial origin and is important to the region's wide range of habitats and high biodiversity.
  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: -70.600077
      East_Bounding_Coordinate: -70.033436
      North_Bounding_Coordinate: 42.800106
      South_Bounding_Coordinate: 42.083366
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: Geographic Information Systems
      Theme_Keyword: GIS
      Theme_Keyword: Woods Hole Field Center
      Theme_Keyword: United States Geological Survey
      Theme_Keyword: USGS
      Theme_Keyword: topographic data
      Theme_Keyword: sea floor topography
      Theme_Keyword: bathymetry
      Theme_Keyword: ruggedness
      Theme_Keyword: terrain ruggedness index
      Theme_Keyword: TRI
      Theme_Keyword: sea floor features
    Place:
      Place_Keyword_Thesaurus: none
      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: none
  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
        Country: USA
      Contact_Voice_Telephone: 508-457-2239
      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:
  Lineage:
    Process_Step:
      Process_Description:
        The Terrian Ruggedness Index is based on an elevation index described by Riley and others (1999) where the sum change in elevation between a grid cell and its eight neighboring grid cells is calculated by squaring the eight differences in elevation, summing the squared differences, and taking the square root of the sum. Here, the index has been modified to calculate the average of the absolute values of the eight differences in elevation. The TRI was applied to the bathymetric grids by running a macro in ArcMap's Visual Basic editing environment. Artifacts of data collection were removed by hand editing and applying a mean filter (the Neighborhood Statistics function in Spatial Analyst was used to calculate a mean TRI for a 3x3 pixel template of TRI values centered over each pixel in the image).
      Source_Used_Citation_Abbreviation: M:\Ruggedness\Rugged_Clipped\allruggedgrid
    Process_Step:
      Process_Description: Dataset copied.
      Source_Used_Citation_Abbreviation: K:\Ruggedness\rugged_sbnms_clipped\allruggedgrid
    Process_Step:
      Process_Description: Dataset copied.
      Source_Used_Citation_Abbreviation:
        C:\Documents and Settings\Sarah Griffee\My Documents\Page\rugged

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 6201
    Column_Count: 3631
    Vertical_Count: 1

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: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 13.000000
          Ordinate_Resolution: 13.000000
        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

Distribution_Information:
  Resource_Description: Downloadable Data
  Distribution_Liability:
    This publication was prepared by members of the US Geological Survey. Neither USGS or the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 85.860

Metadata_Reference_Information:
  Metadata_Date: 20050721
  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
        Country: USA
      Contact_Voice_Telephone: 508-457-2239
      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_Extensions:
    Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
    Profile_Name: ESRI Metadata Profile

Generated by `mp` version 2.8.6 on Thu Jul 21 16:51:38 2005