Identification_Information:
  Citation:
    Citation_Information:
      Originator: PIBHMC Natural Systems Analysis for 
        Coral Reef Ecosystem Division, NOAA Pacific Islands Fisheries 
        Science Center, Pacific Islands Benthic Habitat Mapping Center
      Publication_Date: 20121217
      Title: Mosaic of gridded multibeam bathymetry and bathymetry derived 
        from multispectral World View-2 satellite imagery of Rota Island, 
        Territory of Mariana, USA
      Geospatial_Data_Presentation_Form: raster digital data
      Online_Linkage: http://www.soest.hawaii.edu/pibhmc
      Online_Linkage: http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_rot_bathy.htm
  Description:
    Abstract: Gridded multibeam bathymetry is integrated with bathymetry 
      derived from multpectral World View-2 satellite data. Gridded (5 m cell 
      size) multibeam bathymetry collected aboard NOAA Ship Hiialaka'i and 
      R/V AHI. Multibeam data were also collected aboard the NOAA Ship Oscar 
      Elton Sette in 2010, a 224’ (68 m) United States National Oceanographic
      and Atmospheric Administration research ship. Bathymetry values shallower 
      than ~20 m were derived by gauging the reletive attenuation of coastal, 
      blue, green and yellow spectral radiance as a function of depth. A multiple 
      linear regression analysis of coastal,blue, green and yellow band spectral
      values against depth determined the variables of y-intercept, coastal,blue, 
      green and yellow slope values. Variables then used in multivariate slope 
      intercept formula to derive depth. Digital image processing to derive depths 
      conducted with the ENVI 4.8 software program while data editing and integration
      was performed using ArcGIS 10. This data set is for the shelf environment of
      Rota Island, Mariana.
    Purpose:
      The data were derived in support of NOAA Coral Reef Conservation 
      Program goals. Goal 1 is to map all U.S. Coral Reef Ecosystems.  
      This data set specifically addresses Objective 1 and 4: to develop 
      high-resolution benthic maps and to characterize priority deep 
      water reefs and associated habitats. This integration of derived 
      bathymetry with multibeam sonar data provides a GIS layer with 
      expanded spatial coverage that may be used for benthic and essential 
      fish habitat characterization, and for the study of geologic features. 
      By combining the dataset with other bathymetry, backscatter, derivatives, 
      and in situ data, they collectively compose benthic habitat maps 
      designed to be used to understand and predict shallow depth (0m to 150m) 
      benthic habitats for organisms that inhabit coral reef ecosystems.
    Supplemental_Information:
      Gridded multibeam data were collected aboard the Hi'ialakai, a 218’ 
      United States National Oceanographic and Atmospheric Administration 
      (NOAA) research ship, aboard the R/V AHI (Acoustic Habitat 
      Investigator), a 25’ survey launch owned, and aboard the NOAA Ship 
      Oscar Elton Sette in 2010, a 224’ (68 m) United States National Oceanographic
      and Atmospheric Administration research ship.
      operated by the NOAA 
      Pacific Islands Fisheries Science Center in Honolulu, HI. The 
      metadata for the bathymetry is documented in the product metadata, 
      Rota_5m_2010.txt.  
      http://www.soest.hawaii.edu/pibhmc/pibhmc_cnmi_rot_bathy.htm
      Original World View-2 imagery was purchased to support the Pacific Islands
      Geographic Information System (GIS) project and National Ocean Service's 
      (NOS) coral mapping activities. Orthographically corrected World View-2 Imagery 
      was provided by USGS, State of Hawaii and USDA. The metadata
      for this World View-2 imagery is documented in the original product metadata, 
      10OCT18011604-M3DM-052390565130_01_P001 (http://www.soest.hawaii.edu/pibhmc/)    
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 20030922
        Ending_Date: 20121115
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain: 
    Bounding_Coordinates:
      West_Bounding_Coordinate: 145.104881999
      East_Bounding_Coordinate: 150.104881999
      North_Bounding_Coordinate: 14.2294420121
      South_Bounding_Coordinate: 9.22944201208
  Keywords: 
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Keyword Thesaurus
      Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor 
         Topography > Bathymetry
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Keyword Thesaurus
      Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor 
         Topography > Water Depth
    Theme: 
      Theme_Keyword_Thesaurus: CoRIS Theme Keyword Thesaurus
      Theme_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > 
        Reef Monitoring and Assessment > Remote Sensing > Satellite 
        (digital scans) > World View-2
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Slope
      Theme_Keyword: Bathymetry
      Theme_Keyword: Multibeam sonar
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Rota Island
      Place_Keyword: Commonwealth of the Northern Mariana Islands
      Place_Keyword: United States of America
    Place:
      Place_Keyword_Thesaurus: CoRIS Place Thesaurus
      Place_Keyword: OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Mariana Islands > Rota Island 
  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 and the Pacific Islands Benthic     
    Habitat Mapping Center, School of Ocean and Earth Science and Technology, University 
    of Hawaii 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), NOAA National Marine Fisheries Service (NMFS)
      Contact_Address: 
        Address_Type: mailing and physical
        Address: 1125 B Alamoana Boulevard
        City: Honolulu
        State_or_Province: HI
        Postal_Code: 96814
        Country: USA
      Contact_Voice_Telephone: 808-983-3747
      Contact_Electronic_Mail_Address: pibhmc@soest.hawaii.edu
      Contact_Instructions: e-mail preferred
  Browse_Graphic:
    Browse_Graphic_File_Name: http://www.soest.hawaii.edu/pibhmc/CNMI_images/Rot_DBMB_5m_445.jpg
    Browse_Graphic_File_Description: Gridded Bathymetry
    Browse_Graphic_File_Type: jpg
  Data_Set_Credit: Benthic Habitat Mapping Group, Coral Reef Ecosystem Division
     (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
  Native_Data_Set_Environment: ArcGIS ASCII file or ArcGIS Grid file, 
    bathymetry derived from 2x2m multispectral satellite imagery (World View-2)
    using ENVI 4.8, multibeam and derived bathymetry were integrated using
    ArcGIS 10
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: GPS C/A
        Horizontal position accuracy: 25 meters
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: 
        Range resolution of sonar: varies with depth
        Raw sounding resolution: varies with depth
        Vertical accuracy of gridded sonar product: ~ 1% of water depth
        Vertical accuracy of derived bathymetry product: 5 meter range 
  Lineage:
    Process_Step:
      Process_Date: 20121217
      Process_Description: 
        Multiple tools in ENVI 4.8 were used to complete the following 
        processing steps: Data conversion from digital number to radiance,
        correction for atmosphere and water surface reflection, masking of 
        non-applicable values, and bathymetric derivation using variables
        from multiple linear regression analysis.  Multiple tools in 
        ArcGIS 10 were used for dataset integration and to extract values 
        for the multiple linear regression analysis and subsequent error 
        analyses. The Microsoft program Excel was used for the multiple
        linear regression analysis to provide original variables for depth
        derivation. The multivariate slope intercept formula used to 
        derive depth was Depth=Yint+(Mcoastal)(Xcoastal)+(Mblue)(Xblue)+
        (Mgreen)(Xgreen)+(Myellow)(XYellow)+(Mred)(Xred). The product was
        derived, from the original image 10OCT18011604-M3DM-052390565130_01_P001, 
        The MLR variables for were Yint=-1.140862903, Mcoastal=-0.030004702, Mblue=-0.36208778, 
        Mgreen=0.634394322, Myellow=-0.001802494, Mred=-0.576489893.
        This derived bathymetry product (ROT_DBAll_5m) was then integrated with the 
        multibeam sonar data, with sonar data prioritized over derived data, to create the final 
        product (ROT_DBMB_5m). 
        A detailed description of all processing steps and an error analysis of each derived bathymetry 
        grid used is available upon request.	
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Pixel
    Row_Count:  4080
    Column_Count: 4507
    Vertical_Count: 1
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 5
          Ordinate_Resolution: 5
        Planar_Distance_Units: meters
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 55N
          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
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257224
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: 1125 B Ala Moana Boulevard
       City: Honolulu
       State_or_Province: Hawaii
       Postal_Code: 96814
       Country: USA
      Contact_Voice_Telephone: 808-983-3776
      Contact_Electronic_Mail_Address: pibhmc@soest.hawaii.edu
  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: Arc Grid
        Format_Information_Content: Arc Grid can be opened directly using 
          ArcMap or ArcCatalog.
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/bathymetry/Rot_DBMB_5m.zip
    Fees: None
Metadata_Reference_Information:
  Metadata_Date:  20121217
  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: 1125 B Ala Moana Boulevard
       City: Honolulu
       State_or_Province: Hawaii
       Postal_Code: 96822
       Country: USA
      Contact_Voice_Telephone: 808-983-3776
      Contact_Electronic_Mail_Address: pibhmc@soest.hawaii.edu
  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