Identification_Information: 
  Citation: 
    Citation_Information: 
      Originator: Benthic Habitat Mapping Group, CRED, PIFSC, NOAA
      Publication_Date: 20040610
      Title: CRED Gridded bathymetry of Marpi Bank, Commonwealth of Northern Mariana
        Islands
      Geospatial_Data_Presentation_Form: raster digital data
      Online_Linkage: ftp://ftp.soest.hawaii.edu/pibhmc/data/marianas/marpi-5.asc.zip
      Online_Linkage: ftp://ftp.soest.hawaii.edu/pibhmc/data/marianas/marpi-5.grd.zip
  Description: 
    Abstract: Gridded bathymetry of Marpi Bank, Commonwealth of Northern Mariana
      Islands.  This survey achieved approximately 90% bottom coverage down to
      200 meters.
    Purpose: This grid was created using data gathered from multibeam soundings
      for use as a planning and reference document.  Refer to supplemental
      information for description of instrument and survey.
    Supplemental_Information: Data were collected aboard the R/V AHI (Acoustic Habitat Investigator),
      a 25' survey launch owned and operated by the NOAA Pacific Islands
      Fisheries Science Center in Honolulu, HI.  The R/V AHI's survey sensors
      include a 240 kHz RESON 8101-ER sonar providing bathymetry and imagery
      data, a TSS/Applanix POS/MV Model 320 which measures position, velocity,
      attitude and heading, and a Seabird SBE 19 CTD used to measure sound
      velocity profiles.
      
      Equipment serial numbers and software versions are as follows:
      
      RESON 8101-ER multibeam echosounder
      DOC inventory #:  CD0000537418
      Firmware, dry: 8101-2.07-2D4D
      Firmware, wet: 8101-1.06-2F6B
      
      POS/MV Model 320, version 3
      DOC inventory #: CD0000476647
      PCS serial #: 474
      IMU serial #: 203
      Controller software: v 1.0.5.0
      
      Seabird SBE19 CTD:
      Serial #: 3029
      
      R/V AHI Lever Arm Distances and Alignment Offsets
      The R/V AHI Reference Point (RP) is defined to be the intersection of
      the vessel's centerline, the cabin deck and the bulkhead immediately aft
      of the transducer.  This is marked by a punch in the deck weld at that
      location.  Positive X means the point is forward of the RP, positive Y
      means the point is to starboard of the RP, positive Z means the point is
      below the RP.  The loaded waterline is defined as the intersection of
      the vessel's performance wing with the hull at the transom.
      
      Antenna Baseline Distance, m: 1.229
      Transducer depth below waterline, m 0.62
      
      RP to IMU                            0.80  0.00  0.08
      RP to Primary GPS Antenna           -3.55 -0.61 -1.88
      RP to Vessel                         0.16  0.00  0.77
      RP to Sensor 1(MB transducer)        0.16  0.00  0.77
      RP to Sensor 2                       0     0     0
      RP to Aux. GPS Antenna               0     0     0
      RP to Heave lever arm(deg)          -0.67  0.00  0.00
      IMU rotation Ref. Frame, deg         0     0     0
      Sensor 1 rotation Ref. Frame, deg    0     0     0
      Sensor 2 rotation Ref. Frame, deg    0     0     0
      
      Roll offset:    +0.5 deg
      Pitch offset:    0.0 deg
      Gyro offset:     0.0 deg
  Time_Period_of_Content: 
    Time_Period_Information: 
      Range_of_Dates/Times: 
        Beginning_Date: 20030828
        Ending_Date: 20030828
    Currentness_Reference: ground condition
  Status: 
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain: 
    Bounding_Coordinates: 
      West_Bounding_Coordinate: 145.836493
      East_Bounding_Coordinate: 145.891634
      North_Bounding_Coordinate: 15.450298
      South_Bounding_Coordinate: 15.394246
  Keywords: 
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
      Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
      Theme_Keyword: Numeric Data Sets > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Gridded Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: elevation
      Theme_Keyword: 006
    Place: 
      Place_Keyword_Thesaurus: None
      Place_Keyword: Marpi Bank
      Place_Keyword: Saipan
      Place_Keyword: Commonwealth of Northern Mariana Islands
    Place: 
      Place_Keyword_Thesaurus: CoRIS Place Thesaurus
      Place_Keyword: OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Saipan Island > Marpi Point (15N145E0015)
      Place_Keyword: COUNTRY/TERRITORY > Northern Mariana Islands > Saipan > Marpi Point (15N145E0015)
  Access_Constraints: None
  Use_Constraints: These data are not to be used for navigation purposes.
    Please acknowledge the NOAA Coral Reef Ecosystem Division,
    Pacific Islands Fisheries Science Center as the source of this information.
  Point_of_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Benthic Habitat Mapping Group,
          Coral Reef Ecosystem Division, PIFSC,NOAA
        Contact_Person: Joyce Miller
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1125B Ala Moana Blvd
        City: Honolulu
        State_or_Province: HI
        Postal_Code: 96814
        Country: USA
      Contact_Voice_Telephone: 808-592-8303
      Contact_Electronic_Mail_Address: joyce.miller@noaa.gov
  Browse_Graphic: 
    Browse_Graphic_File_Name: http://www.pifsc.noaa.gov/cred/hmapping/img/original/06a-marpi-5.jpg
    Browse_Graphic_File_Description: Gridded Bathymetry
    Browse_Graphic_File_Type: JPEG
  Data_Set_Credit: Benthic Habitat Mapping Group, Coral Reef Ecosystem Division
    (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
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: Unspecified
  Completeness_Report: Complete
  Positional_Accuracy: 
    Horizontal_Positional_Accuracy: 
      Horizontal_Positional_Accuracy_Report: Horizontal positioning system: GPS SPS
        
        Horizontal position accuracy: 5
    Vertical_Positional_Accuracy: 
      Vertical_Positional_Accuracy_Report: Range resolution of sonar ~ 1.25 cm
        Raw sounding resolution: 1 cm
        Vertical accuracy of gridded product ~ 1 meter
  Lineage: 
    Process_Step: 
      Process_Description: Science Applications International Corporation&oacute;s
        (SAIC) ISS-2000 acquires, processes and records data, provides survey
        control and underway quality control displays.  SAIC&oacute;s SABER processing
        software is used to process the raw soundings, analyze the results,
        manually edit the sounding data to remove outliers and derive average
        gridded data values.  GMT was then used to reformat the grid into final
        
        form.  Interactive Visualization System&oacute;s Fledermaus and ESRI ArcGIS
        were used for viewing results and creating browse objects.
        
        The data have been corrected for observed tides from Guam tide gauge
        1630000 with a time corrector of 18 minutes and a tide height multiplier
        of 0.94 using SABER postprocessing software.  The data were also
        recorrected for observed sound velocities in postprocessing.
        
        Software used:
        SAIC ISS-2000 Acquisition Software, v 3.4 (20030610)
        SAIC SABER Processing Software, v 3.4 (20030610)
        GMT Generic Mapping Tools, v 3.4.2 (20021002)
      Process_Date: 20040610
Spatial_Data_Organization_Information: 
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information: 
    Raster_Object_Type: Grid Cell
    Row_Count: 1234
    Column_Count: 1177
    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: 5
          Ordinate_Resolution: 5
        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
  Vertical_Coordinate_System_Definition: 
    Depth_System_Definition: 
      Depth_Datum_Name: mean lower low water
      Depth_Resolution: 0.01
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute Values
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.  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
      this survey has not been developed, therefore the accuracy of depth
      measurements should be considered to be within 1 meter.
    Entity_and_Attribute_Detail_Citation: none
Distribution_Information: 
  Distributor: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Benthic Habitat Mapping Group, CRED, PIFSC, NOAA
        Contact_Person: Joyce E. Miller
      Contact_Position: Oceanographer
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1125 'B' Ala Moana Blvd
        City: Honolulu
        State_or_Province: Hawaii
        Postal_Code: 96814
        Country: USA
      Contact_Voice_Telephone: 808-592-8303
      Contact_Electronic_Mail_Address: joyce.miller@noaa.gov
  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: Binary netCDF Grid:
          This file is formatted as a 2-D binary netCDF grid file.  This is the default
          grid file format used by GMT (Generic Mapping Tools), which created this file.
          
          More information can be be located at http://gmt.soest.hawaii.edu and
          http://unidata.ucar.edu/packages/netcdf/index.html
        File_Decompression_Technique: Zip file
        Transfer_Size: 1.9
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/data/marianas/marpi-5.grd.zip
    Digital_Form: 
      Digital_Transfer_Information: 
        Format_Name: ASCII ARC/INFO Grid
        Format_Information_Content: ASCII ARC/INFO grid
          Files of this type can be imported with ArcToolbox 8.3 using the
          following path: Conversion Tools;Import to Raster;ASCII to Grid
          (Float).
          
          These data as having the following header format and description
          
          NCOLS xxx
          NROWS xxx
          XLLCORNER xxx
          YLLCORNER xxx
          CELLSIZE xxx
          NODATA_VALUE xxx
          ROW 1
          ROW 2
          .
          .
          .
          ROW n
          where:
          
          NCOLS is the number of columns in the ASCII file.
          NROWS is the number of rows in the ASCII file.
          XLLCORNER is the x coordinate for lower left corner of the
          lower left most cell in the grid.
          YLLCORNER is the x coordinate for the lower left corner
          of the lower left most cell in the grid.
          CELLSIZE is the length of a cell&oacute;s edge.
          NODATA_VALUE is the value in the ASCII file representing
          unknown values.
          xxx are numbers, and the cell values are space delimited
        File_Decompression_Technique: Zip file
        Transfer_Size: 2.4
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/data/marianas/marpi-5.asc.zip
    Fees: None
Metadata_Reference_Information: 
  Metadata_Date: 20080812
  Metadata_Contact: 
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: Benthic Habitat Mapping Group, CRED, PIFSC, NOAA
        Contact_Person: Dr. Michael Parke
      Contact_Position: Research Biologist
      Contact_Address: 
        Address_Type: mailing and physical address
        Address: 1125 'B' Ala Moana Blvd
        City: Honolulu
        State_or_Province: Hawaii
        Postal_Code: 96814
        Country: USA
      Contact_Voice_Telephone: 808-592-7025
      Contact_Electronic_Mail_Address: michael.parke@noaa.gov
  Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: Local Time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None
CoRIS: 
  CoRIS_ID: 20041213081331
  CoRIS_Children: None
  CoRIS_Beginning_Date: 20030828
  CoRIS_Ending_Date: 20030828
  CoRIS_Metadata_Link: http://www.coris.noaa.gov/metadata/records/txt/cred_gridded_bathy_marpi_bank_2003.txt
  CoRIS_Tracking_ID: 796