# Closed-contour depressions (contours)

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# Metadata:

- Identification_Information
- Metadata_Reference_Information
- Distribution_Information
- Spatial_Data_Organization_Information
- Entity_and_Attribute_Information
- Spatial_Reference_Information
- Data_Quality_Information
- Lineage

Identification_Information:
  Description:
    Abstract:
      This layer shows the horizontal and vertical extent of closed-contour depressions on Guam. The data source is Taboroši, D. (2002), Karst features of Guam [MSc thesis], University of Guam, Mangilao, 324 pp. The contours were derived from a topographic 10-foot contour file for the entire island of Guam by manual editing in which all features except closed contours were removed. The depressions shown in this layer include depressions of a variety of origins: karst sinkholes, low-lying areas in the primary depositional surface, quarried areas, and other types.
    Purpose: To inventory karst features on Guam.
  Citation:
    Citation_Information:
      Originator: Danko Taboroši
      Publication_Date: 2002
      Title: Closed-contour depressions (contours)
      Geospatial_Data_Presentation_Form: vector digital data
      Online_Linkage:
        <http://www.weriguam.org/reports/item/karst-features-of-guam-mariana-islands.html>
  Status:
    Progress: Complete
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 145.375177
      East_Bounding_Coordinate: 146.471031
      North_Bounding_Coordinate: 15.082883
      South_Bounding_Coordinate: 13.875193
  Use_Constraints:
    Data set is not for use in litigation. The Water & Environmental Research Institute (WERI) cannot assume liability for any damages or misrepresentations caused by any inaccuracies in the data or as a result of the data to be in a particular system. WERI should be given credit for the work involved in creating the dataset.
  Data_Set_Credit:
    Danko Taboroši, 1998-2000 Graduate Student, University of Guam (WERI)
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Danko Taboroši
      Contact_Electronic_Mail_Address: taborosi@islandresearch.org
  Keywords:
    Theme:
      Theme_Keyword: sinkholes
      Theme_Keyword: closed-contour depression
      Theme_Keyword: quarries
      Theme_Keyword: contours
      Theme_Keyword: contour lines
      Theme_Keyword: karst
    Place:
      Place_Keyword: Guam
      Place_Keyword: U.S. Territory
      Place_Keyword: Mariana Islands
      Place_Keyword: Micronesia
      Place_Keyword: Western Pacific
      Place_Keyword: Northwest Pacific
      Place_Keyword: Pacific
      Place_Keyword: Pacific Islands

Metadata_Reference_Information:
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Contact:
    Contact_Information:
      Contact_Address:
        Address_Type:
          REQUIRED: The mailing and/or physical address for the organization or individual.
        City: REQUIRED: The city of the address.
        State_or_Province: REQUIRED: The state or province of the address.
        Postal_Code: REQUIRED: The ZIP or other postal code of the address.
      Contact_Person_Primary:
        Contact_Person: Maria Kottermair
        Contact_Organization: Water & Environmental Research Institute, University of Guam
      Contact_Position: Research Assistant III
      Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
  Metadata_Date: 20131010

Distribution_Information:
  Resource_Description: Downloadable Data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 3.165

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: sinkholes_contours
    Attribute:
      Attribute_Label: OBJECTID
      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: Length
    Attribute:
      Attribute_Label: Type
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Planar_Distance_Units: meters
        Coordinate_Representation:
          Abscissa_Resolution: 0.000000
          Ordinate_Resolution: 0.000000
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984

Data_Quality_Information:
  Lineage:
    Process_Step:
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Danko Taboroši
          Contact_Electronic_Mail_Address: taborosi@islandresearch.org
      Process_Description:
        The file was created by editing an existing USGS topographic coverage and removing all lines but the closed-contour contour depressions and associated tick marks. For that reason, not every single feature is actually karst. Some of it could be primary depositional or man-made features.
      Process_Date: 2000
    Process_Step:
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Maria Kottermair
            Contact_Organization: Water & Environmental Research Institute, University of Guam
          Contact_Position: Research Assistant III
          Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
      Process_Description:
        Fix topology of major sinkholes (only) by moving parts of a contour line that were obviously shifted to connect to the other parts seamlessly. Topology was not tested using topology funtions in a geodatabase.
      Process_Date: 20130914
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Has not been assessed.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Has not been assessed but visual comparison with the high-accuracy LiDAR-derived contour-lines shows general agreement of location.
  Logical_Consistency_Report:
    Contour lines include tick marks and crosses. Some contour lines are not continuous or cross each other.
  Completeness_Report:
    This dataset is believed to be complete based on the source data set.

Lineage:

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