Identification_Information:
  Citation:
    Citation_Information:
      Originator: U.S. Geological Survey
      Originator: University of Guam
      Publication_Date: 20020101
      Title: Pohnpei Extent of Coral Reefs
      Geospatial_Data_Presentation_Form: vector digital data
      Online_Linkage: http://www.islands.fm/atlas/#/pohnpei-state
  Description:
    Abstract: This dataset the extent of coral reefs around Pohnpei. The data layer shown here is a subset of Pohnpei base layer. The original data, so-called Digital Line Graphs (DLSs), were created by U.S. Geological Survey (USGS) for the 1:25,000-scale topographic maps (2001). The shoreline was modified by by University of Guam (UOG) (2017) based on 2016 Worldview-3 satellite imagery from Digital Globe. The dataset was slightly shifted and also updated (mainly around Kolonia and its vicinity).
    Purpose: To show the extent of coral reefs around Pohnpei.
    Supplemental_Information: The dataset is included the Digital Atlas of Micronesia, module Pohnpei, by Island Research & Education Initiative (iREi), in collaboration with Water and Environmental Research Institute of the Western Pacific (WERI) University of Guam and partial funding from United States Geological Survey (USGS), under WRRI 104-B Program, project # 2016GU302B.
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: Irregular
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 158.081255
      East_Bounding_Coordinate: 158.3684
      North_Bounding_Coordinate: 7.057857
      South_Bounding_Coordinate: 6.758177
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: coral reef
      Theme_Keyword: lagoon
      Theme_Keyword: island
      Theme_Keyword: Digital Line Graph
      Theme_Keyword: DLG
      Theme_Keyword: hydrography
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Pohnpei
      Place_Keyword: Federated States of Micronesia (FSM)
      Place_Keyword: U.S. Affiliated Pacific Islands (USAPI)
      Place_Keyword: Caroline Islands
      Place_Keyword: Micronesia
      Place_Keyword: Northwestern Pacific
      Place_Keyword: Pacific Ocean
  Access_Constraints: None
  Use_Constraints: There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: University of Guam
        Contact_Person: Maria Kottermair
      Contact_Position: Geospatial Coordinator
      Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Drew Decker
      Contact_Position: National Map Liaison for Pacific Region
      Contact_Address:
        Address_Type: mailing and physical
        Address: 4165 Spruance Road
        City: San Diego
        State_or_Province: CA
        Postal_Code: 92101
        Country: US
      Contact_Voice_Telephone: 619-225-6430
      Contact_Electronic_Mail_Address: ddecker@usgs.gov
  Data_Set_Credit:
    Original dataset by U.S. Geological Survey (USGS); 
    Partly updated by by University of Guam (UOG) .
  Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.2.2.3552
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Attribute accuracy is tested by manual comparison of the source with hard copy plots and/or symbolized display of the digital line graph on an interactive computer graphic system. Through inspection and queries, attempts were made to ensure completeness and consistency of attribute values.
  Logical_Consistency_Report: Topological requirements include the following: lines must begin and end at nodes, lines must connect to each other at nodes, lines do not extend through nodes, left and right areas are defined for each line element and are consistent throughout the file, and lines representing the limits of the file (neatline) are free of gaps.
  Completeness_Report: The completeness of the data is unknown but should be consistent with the level of information normally shown on U.S. Geological Survey 1:24,000-scale topographic maps.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: The updated sections (mainly around Kolonia and Sokehs) are accurate within a few meters, the other areas are accurate within about 20-30 meters.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Explanation: Visual comparison with WorldView-3 satellite imagery.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Title: U.S. Geological Survey Digital Line Graph
          Online_Linkage: https://earthexplorer.usgs.gov/
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: None
      Source_Citation_Abbreviation: DLG
    Process_Step:
      Process_Description: Convert original DLG files (downloaded from EarthExplorer) to shapefiles: area, polyline, and point.
      Process_Date: 20160526
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey
            Contact_Person: Drew Decker
          Contact_Position: National Map Liaison for Pacific Region
          Contact_Address:
            Address_Type: mailing and physical
            Address: 4165 Spruance Road
            City: San Diego
            State_or_Province: CA
            Postal_Code: 92101
            Country: US
          Contact_Voice_Telephone: 619-225-6430
          Contact_Electronic_Mail_Address: ddecker@usgs.gov
    Process_Step:
      Process_Description:
        1. Projected to WGS84 UTM zone 57N; 
        2. Shifted dataset about 15.5 meters W to match WorldView-3 imagery (WV-3) better; 
        3. Extracted reef polygons; 
        4. Deleted neatlines; 
        5. Cleaned polygons using ET GeoWizard tools; 
        6. Updated polygons around the airport and adjusted dataset to new shoreline (phn_shoreline); 
        7. Formatted attribute table and added fields (name, source, etc).
      Process_Date: 20170121
      Source_Produced_Citation_Abbreviation: Pohnpei Shoreline
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: University of Guam
            Contact_Person: Maria Kottermair
          Contact_Position: Geospatial Coordinator
          Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Complete chain
      Point_and_Vector_Object_Count: 792
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: phn_coral_reef
    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: Type
    Attribute:
      Attribute_Label: Area_m2
      Attribute_Definition: Area in square meters
    Attribute:
      Attribute_Label: Area_ac
      Attribute_Definition: Area in acres
    Attribute:
      Attribute_Label: Source
      Attribute_Definition: Source of original dataset.
    Attribute:
      Attribute_Label: Notes
  Overview_Description:
    Entity_and_Attribute_Detail_Citation: The USGS document Standards for Digital Line Graphs, Part 3: Attribute Codes, contains a detailed description of each attribute code and a reference to the associated map symbols on the map source materials. The document is available at http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dlg-3/3dlg0798.pdf. Other DLG Standards are available from http://rockyweb.cr.usgs.gov/nmpstds/dlgstds.html.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Island Research & Education Initiative (iREi)
      Contact_Address:
        Address_Type: mailing
        Address: P.O. Box PS 303
        City: Palikir
        State_or_Province: Pohnpei
        Postal_Code: 96941
        Country: FM
      Contact_Voice_Telephone: 691.320.5212
      Contact_Electronic_Mail_Address: irei@islandresearch.org
  Distribution_Liability: See access and use constraints information.
Metadata_Reference_Information:
  Metadata_Date: 20170715
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: University of Guam
        Contact_Person: Maria Kottermair
      Contact_Position: Geospatial Coordinator
      Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
  Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
