Identification_Information: 
  Citation: 
    Citation_Information: 
      Originator: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
      Publication_Date: 20100901
      Title: Gridded multibeam bathymetry of Apra Harbor, Guam U.S. Territory
      Geospatial_Data_Presentation_Form: digital data
      Online_Linkage: http://www.soest.hawaii.edu/pibhmc
      Online_Linkage: http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_apra_bathy.htm
  Description: 
    Abstract: Gridded bathymetry from Apra Harbor, Guam U.S. Territory. The netCDF and Arc
      ASCII grids include multibeam bathymetry from the Reson SeaBat 8125 multibeam sonar
      collected in 2008 by the NOAA Office of Coast Survey and the United States Navy Fleet
      Survey Team. The sonar frequency is 455 kHz and the data are gridded at 1 m resolution.
      The data served here were extracted from a Caris project provided by OCS and converted
      to netCDF and Arc ASCII grids by the NOAA Coral Reef Ecosystem Division.
    Purpose: These data were collected in response to a request by the USN for a cooperative
      modern hydrographic survey with NOAA to provide contemporary hydrographic data
      to update the nautical charts in the area. The USN plans to use Apra Harbor, Guam
      as a primary port-of-call. These data will support safe navigation for the USN fleet
      in Apra Harbor by providing IHO Order 1 hydrography. They will also aid in
      ongoing habitat mapping efforts by NOAA PIFSC CRED.
      
      These netCDF and ASCII grids were created using data gathered
      from multibeam soundings for use as a planning and reference
      document. The data are also being used for benthic habitat
      mapping, for locating Essential Fish Habitat, and for studying
      geologic features of the area. Refer to supplemental information
      for description of instrument and survey.
    Supplemental_Information: Survey data were acquired by the United States Navy (USN) Fleet
      Survey Team (FST) with Survey Vessel Swamp Fox. A Reson 8125
      multibeam echosounder was mounted from an arm on the port
      side of the vessel. The Klein 3000 Side Scan Sonar is operated
      in the stern-towed configuration. Additional detailed
      information on data acquisition, equipment configuration, and
      corrections can be found in the Data Acquisition and Processing
      Report (DAPR), SWAMPFOX_DAPR_2008.pdf, that can be accessed at: www.soest.hawaii.edu/pibhmc
      and is included in the ZIP file containing the bathymetry grids.
      
      Vertical_Coordinate_System_Definition Depth_System_Definition
  Time_Period_of_Content: 
    Time_Period_Information: 
      Range_of_Dates/Times: 
        Beginning_Date: 20080329
        Ending_Date: 20080504
    Currentness_Reference: ground condition
  Status: 
    Progress: Complete
    Maintenance_and_Update_Frequency: None Planned
  Spatial_Domain: 
    Bounding_Coordinates: 
      West_Bounding_Coordinate: 144.614
      East_Bounding_Coordinate: 144.676
      North_Bounding_Coordinate: 13.464
      South_Bounding_Coordinate: 13.418
  Keywords: 
    Theme: 
      Theme_Keyword_Thesaurus: CRCP Project
      Theme_Keyword: Benthic Habitat Mapping and Characterization - Commonwealth of the Northern Mariana Islands and Guam
      Theme_Keyword: 1398
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
      Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: elevation
      Theme_Keyword: 006
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
      Theme_Keyword: Geographic Information > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Bathymetry
      Theme_Keyword: Multibeam sonar
    Place: 
      Place_Keyword_Thesaurus: None
      Place_Keyword: UTM Zone 55
      Place_Keyword: Apra Harbor
      Place_Keyword: Guam Island
      Place_Keyword: U.S. Territory
      Place_Keyword: United States of America
    Place: 
      Place_Keyword_Thesaurus: CoRIS Place Thesaurus
      Place_Keyword: OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Apra Harbour (13N144E0051)
      Place_Keyword: COUNTRY/TERRITORY > United States of America > Guam > Apra Harbour (13N144E0051)
    Place: 
      Place_Keyword_Thesaurus: CoRIS Region
      Place_Keyword: Guam
  Access_Constraints: None
  Use_Constraints: These data are not to be used for navigation
    purposes. Please acknowledge NOAA Pacific Islands Fisheries
    Science Center, the Joint Institute for Marine and
    Atmospheric Research (JIMAR) University of Hawaii, the NOAA
    Office of Coast Survey, and the USN Fleet Survey Team as the
    sources of this information.
  Point_of_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: NOAA IRC
        Address: NMFS/PIFSC/CRED
        Address: 1845 WASP Blvd., Building 176
        City: Honolulu
        State_or_Province: HI
        Postal_Code: 96818
      Contact_Voice_Telephone: 808 725-5360
      Contact_Facsimile_Telephone: 808 725-5429
      Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
      Contact_Instructions: e-mail preferred
  Browse_Graphic: 
    Browse_Graphic_File_Name: http://www.soest.hawaii.edu/pibhmc/CNMI_images/apra_bty_1m_445.jpg
    Browse_Graphic_File_Description: Multibeam Bathymetry
    Browse_Graphic_File_Type: JPEG
  Data_Set_Credit: NOAA OCS, USN FST, PIBHMC, CRED, PIFSC, NOAA, and JIMAR
  Security_Information: 
    Security_Classification_System: Not applicable
    Security_Classification: Unclassified
    Security_Handling_Description: Not applicable
  Native_Data_Set_Environment: netCDF file created using the Generic
    Mapping Tools (GMT) in a LINUX environment
    ArcGIS ASCII file created in a LINUX environment
Data_Quality_Information: 
  Attribute_Accuracy: 
    Attribute_Accuracy_Report: Data are collected for resource
      management and research purposes and are tested for internal
      consistency; however, no effort is made to compare these data to
      external references or to other published data.
  Logical_Consistency_Report: These data are believed to be logically
    consistent though no tests were performed
  Completeness_Report: Complete
  Positional_Accuracy: 
    Horizontal_Positional_Accuracy: 
      Horizontal_Positional_Accuracy_Report: Horizontal positioning system: see DAPR
        Horizontal position accuracy: see DAPR
    Vertical_Positional_Accuracy: 
      Vertical_Positional_Accuracy_Report: see DAPR
        Raw sounding resolution: Variable
  Lineage: 
    Process_Step: 
      Process_Description: Refer to the the Data Acquisition and Processing Report (DAPR)
        that can be accessed at: www.soest.hawaii.edu/pibhmc and is
        included in the ZIP file containing the bathymetry grids for
        detailed information on the bathymetry data processing steps.
      Process_Date: 20101115
Spatial_Data_Organization_Information: 
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information: 
    Raster_Object_Type: Grid Cell
    Row_Count: 5061
    Column_Count: 6664
    Vertical_Count: 1
Spatial_Reference_Information: 
  Horizontal_Coordinate_System_Definition: 
    Planar: 
      Grid_Coordinate_System: 
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator: 
          UTM_Zone_Number: 55
          Transverse_Mercator: 
            Scale_Factor_at_Central_Meridian: 0.9996
            Longitude_of_Central_Meridian: 147
            Latitude_of_Projection_Origin: 0
            False_Easting: 500000
            False_Northing: 0
      Planar_Coordinate_Information: 
        Planar_Coordinate_Encoding_Method: Row and Column
        Coordinate_Representation: 
          Abscissa_Resolution: 1
          Ordinate_Resolution: 1
        Planar_Distance_Units: meters
    Geodetic_Model: 
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information: 
  Overview_Description: 
    Entity_and_Attribute_Overview: Depth values are real values based on the average of the
      soundings that fell within the extracted grid cells.  The number
      of soundings per grid cell range from >1000 soundings in shallow
      depths to as few as 20 soundings in deeper areas.  A total error
      budget for these data have not been developed. Therefore, the
      accuracy of depth measurements is reported in the DAPR.
    Entity_and_Attribute_Detail_Citation: none
Distribution_Information: 
  Distributor: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: NOAA IRC
        Address: NMFS/PIFSC/CRED
        Address: 1845 WASP Blvd., Building 176
        City: Honolulu
        State_or_Province: HI
        Postal_Code: 96818
      Contact_Voice_Telephone: 808 725-5360
      Contact_Facsimile_Telephone: 808 725-5429
      Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
      Contact_Instructions: e-mail preferred
  Resource_Description: Downloadable Data
  Distribution_Liability: These data are not to be used for navigational purposes.
    NOAA makes no warranty regarding these data, expressed or
    implied, nor does the fact of distribution constitute such a
    warranty. NOAA cannot assume liability for any damages caused by
    any errors or omissions in these data, nor as a result of the
    failure of these data to function on a particular system.
  Standard_Order_Process: 
    Digital_Form: 
      Digital_Transfer_Information: 
        Format_Name: netCDF
        Format_Information_Content: These data can be downloaded as either a 2-D binary netCDF raster
          grid or an ArcGIS ASCII text file. The netCDF grid
          is the default grid file format used by GMT (Generic Mapping
          Tools), which created this file. More information can be located
          at http://www.soest.hawaii.edu/gmt/and
          http://www.unidata.ucar.edu/software/netcdf/. The Arc ASCII file,
          for use in ESRI's (http://www.esri.com) GIS software, can be
          converted to an Arc Raster Grid using ArcToolbox ASCII to Raster
          conversion tool.
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/apra_1m_grd.zip
    Digital_Form: 
      Digital_Transfer_Information: 
        Format_Name: Arc ASCII
        Format_Information_Content: These data can be downloaded as either a 2-D binary netCDF raster
          grid or an ArcGIS ASCII text file. The netCDF grid
          is the default grid file format used by GMT (Generic Mapping
          Tools), which created this file. More information can be located
          at http://www.soest.hawaii.edu/gmt/and
          http://www.unidata.ucar.edu/software/netcdf/. The Arc ASCII file,
          for use in ESRI's (http://www.esri.com) GIS software, can be
          converted to an Arc Raster Grid using ArcToolbox ASCII to Raster
          conversion tool.
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/apra_1m_asc.zip
    Fees: None
Metadata_Reference_Information: 
  Metadata_Date: 20170407
  Metadata_Review_Date: 20101202
  Metadata_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: NOAA IRC
        Address: NMFS/PIFSC/CRED
        Address: 1845 WASP Blvd., Building 176
        City: Honolulu
        State_or_Province: HI
        Postal_Code: 96818
      Contact_Voice_Telephone: 808 725-5360
      Contact_Facsimile_Telephone: 808 725-5429
      Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
      Contact_Instructions: e-mail preferred
  Metadata_Standard_Name: FGDC Content Standards for Digital
    Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: Universal Time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None
CoRIS: 
  CoRIS_ID: 20101202031639
  CoRIS_Children: None
  CoRIS_Beginning_Date: 20080329
  CoRIS_Ending_Date: 20080504
  CoRIS_Metadata_Link: https://www.coris.noaa.gov/metadata/records/html/apra_bty_1m.html
  CoRIS_Tracking_ID: 6066