Identification_Information:
  Citation:
    Citation_Information:
      Publication_Date: 2013
      Title: Extent of northern Guam
      Edition: first
      Geospatial_Data_Presentation_Form: vector digital data
      Originator: Water & Environmental Research Institute, University of Guam
      Online_Linkage: http://north.hydroguam.net
  Description:
    Abstract: This dataset shows the extent of northern Guam, as defined by the shoreline (Source: NOAA Coastal Services Center in 2006) and the Pago-Adelup fault, which separates the northern from the southern half of the island (Source: Geologic Map of Guam by Siegrist, H.G. and Reagan, M. 2008).
    Purpose: This dataset shows the extent of northern Guam.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 20001017
        Ending_Date: 20010602
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 144.617946
      East_Bounding_Coordinate: 144.956951
      North_Bounding_Coordinate: 13.654423
      South_Bounding_Coordinate: 13.233998
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Shoreline
      Theme_Keyword: Shoreline vectorization
      Theme_Keyword: northern Guam
      Theme_Keyword: Pago-Adelup fault
      Theme_Keyword: extent
    Place:
      Place_Keyword_Thesaurus: None
      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 Islands
  Access_Constraints: none
  Use_Constraints: This dataset is for general information and educational purposes only and not for use in litigation. It contains no authoritative positional or other data. 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.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Water & Environmental Research Institute, University of Guam
      Contact_Position: Staff Hydrologist
      Contact_Voice_Telephone: (671) 735-2693
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3000
  Data_Set_Credit: Water & Environmental Research Institute, University of Guam
Data_Quality_Information:
  Logical_Consistency_Report: These data are believed to be logically consistent, though no tests were performed. All arcs were snapped by the nodes to create consistantly tied strings without node dangles. Line geometry is topologically clean.
  Completeness_Report: This shoreline dataset of Guam is dependent on the shoreline as delineated on 2001 IKONOS digital satellite imagery from Space Imaging, LLC. The position of the shoreline might change as the natural land changes or better maps and more current aerial photography become available.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Shoreline: the data were created by delineating the shoreline off of IKONOS panchromatic digital satellite imagery collected in 2000 - 2001. The horizontal resolution of the digital imagery  is 1 meter.  The original scale of the imagery was 1:3780. During orthorectification of the IKONOS imagery, 73 ground control points were used to determine the circular error (CE) at a 90% confidence level. For Pacific Islands, Guam, IKONOS data, 2002 the circular error is 8.5 meters for the Panchromatic data set.
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: None
  Lineage:
    Process_Step:
      Process_Description:
        During the vectorization process, the satellite imagery was displayed on a computer screen using ESRI's ArcGIS 8.2 software. In order to obtain the highest degree of accuracy from the imagery, the one-meter panchromatic imagery was used as a base layer for digitizing. In an effort  to better visualize the land-water interface, the one-meter imagery was overlaid on top of the four-meter multispectral imagery using a 35 % transparency value. The near-infrared band (Band 4) was used in the display of the multispectral imagery. The resultant base layer contained the one-meter resolution of the panchromatic imagery and the colorization of the four-meter imagery. The display was zoomed to the image resolution of the panchromatic imagery and the shoreline was manually digitized. Areas of the shoreline that were obscured by cloud cover were digitized from USGS DRGs. All lines are coded with length, ID, origin, and source. The areas of the shoreline obscured by cloud cover were corrected and digitized by utilizing USGS Digital Ortho Quad Photos.

        Known problems:
        The USGS DRGs for Guam had to be adjusted in the x and y directions using ERDAS Imagine 8.5 to match the IKONOS imagery.
      Process_Date: 20020905 - 20020923
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: NOAA Coastal Services Center
          Contact_Position: Pacific Islands GIS Specialist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 2234 South Hobson Avenue
            City: Charleston
            State_or_Province: South Carolina
            Postal_Code: 29405
            Country: USA
          Contact_Voice_Telephone: 843-740-1200
          Contact_Facsimile_Telephone: 843-740-1224
          Contact_Electronic_Mail_Address: csc@csc.noaa.gov
          Hours_of_Service: Monday through Friday, 8 a.m to 5 p.m., Eastern Standard Time
    Process_Step:
      Process_Description: Further modification of the Guam shoreline was conducted by staff within the Coastal Management Program.  ArcView 3.2 was used to adjust shapefile vector vertices.  Most alterations were done by combining the visual information available within the one-meter panchromatic imagery of Guam together with local knowledge of the coastline , and some DOQ data from NPS through USGS.  Metadata was updated using ArcGIS 8.2 software.
      Process_Date: 20011113
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: James Byrne
            Contact_Organization: Guam Coastal Management Program
          Contact_Address:
            Address_Type: mailing address
            Address: P.O Box 2950
            City: Hagatna
            State_or_Province: Guam
            Postal_Code: 96932
            Country: USA
          Contact_Voice_Telephone: 671-472-4201
          Contact_Facsimile_Telephone: 671-477-1812
          Contact_Electronic_Mail_Address: jbyrne@mail.gov.gu
    Process_Step:
      Process_Description: Clip shoreline of Guam using the Pago Adelup fault line. Delete Southern Guam.
      Process_Contact:
        Contact_Information:
          Contact_Position: Research Assistant III
          Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
          Contact_Person_Primary:
            Contact_Person: Maria Kottermair
            Contact_Organization: Water & Environmental Research Institute, University of Guam
      Process_Date: 20130830
    Source_Information:
      Source_Citation:
        Citation_Information:
          Title: Vectorized Shoreline of Guam, Derived from IKONOS, 2002
          Originator: United States Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
          Publication_Date: 20021202
          Other_Citation_Details: The vectorized shoreline data was derived from the one-meter panchromatic IKONOS imagery. Those areas of the coastline that were obscured by cloud cover were derived from United States Geological Survey (USGS) Digital Raster Graphics (DRGs).
    Source_Information:
      Source_Citation:
        Citation_Information:
          Title: Pago-Adelup fault
          Originator: Water & Environmental Research Institute, University of Guam
          Publication_Date: 2012
  Cloud_Cover: < 10 %
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000000
          Ordinate_Resolution: 0.000000
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: northern_guam_extent
    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: Name
    Attribute:
      Attribute_Label: Area_m2
    Attribute:
      Attribute_Label: Area_km2
    Attribute:
      Attribute_Label: Area_ac
    Attribute:
      Attribute_Label: Area_mi
    Attribute:
      Attribute_Label: Perimtr_m
    Attribute:
      Attribute_Label: Perimtr_km
    Attribute:
      Attribute_Label: Perimtr_mi
    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.
    Attribute:
      Attribute_Label: Shape_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: NOAA Coastal Services Center
      Contact_Position: Clearinghouse Manager
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2234 South Hobson Avenue
        City: Charleston
        State_or_Province: SC
        Postal_Code: 29405
        Country: USA
      Contact_Voice_Telephone: 843-740-1200
      Contact_Facsimile_Telephone: 843-740-1224
      Contact_Electronic_Mail_Address: clearinghouse@csc.noaa.gov
      Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
  Resource_Description: Special Purpose Dataset
  Distribution_Liability: Users must assume responsibility to determine the appropriate use fo these data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 0.281
    Fees: none
    Ordering_Instructions: Data is not available for purchase
    Turnaround: none
  Custom_Order_Process: none
  Technical_Prerequisites: none
Metadata_Reference_Information:
  Metadata_Date: 20130830
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Water & Environmental Research Institute, University of Guam
        Contact_Person: Maria Kottermair
      Contact_Position: Research Assitant
      Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
Lineage:
