Identification_Information:
  Citation:
    Citation_Information:
      Originator: U.S. Army Corps of Engineers JALBTCX
      Publication_Date: 20050520
      Publication_Time: Unknown
      Title: Neah Bay to Cape Alava, Northwest Coast, Washington State - Topographic Survey Data
      Edition: 1.1
      Geospatial_Data_Presentation_Form: raster digital data
      Online_Linkage: \\Acoustics2\DATA\hmpr-117-2005-02\Catalog\Bathy\lid10_05
  Description:
    Abstract:
      These data were collected by the SHOALS-1000T
      (Scanning Hydrographic Operational Airborne Lidar	Survey)
      system which consists of an airborne laser
      transmitter/receiver with a 1kHz. bathymetric laser and a
      10 kHz topographic laser.
      The system was operated from a Beechcraft King Air 90
      aircraft. Data were collected with the bathymetric laser
      while flying at altitudes of about 400 meters and a ground
      speed of about 124 knots.  The topographic laser data
      was collected at altitudes of about 700 m and a ground
      speed of 150 kts. One KGPS base stations was
      used during processing of the dataset.
      The SHOALS system includes a ground-based data
      processing system for calculating acurate horizontal
      position and water depth / elevation. LIDAR is an
      acronym for LIght Detection And Ranging.  The system
      operates by emitting a pulse of light that travels from an
      airborne platform to the water surface where a small
      portion of the laser energy is backscattered to the
      airborne receiver.  The remaining energy at the water's
      surface propogates through the water column and reflects
      off the sea bottom and back to the airborne detector.  The
      time difference between the surface return and the bottom
      return corresponds to water depth.  The maximum depth
      the system is able to sense is related to the complex
      interaction of radiance of bottom material, incident sun
      angle and intensity, and the type and quantity of organics
      or sediments in the water column.  As a rule-of-thumb, the
      SHOALS 1000 system is capable of sensing
      bottom to depths equal to two or three times the Secchi
      depth.  Topographic elevations are gridded in this dataset.
    Purpose:
      The purpose  of the survey was to obtain  the
      existing near shore bathymetric and topographic conditions
      along the areas between Neah Bay and  Cape Alava
      located on the Northwestern Coastline of Washington
      State.
  Time_Period_of_Content:
    Time_Period_Information:
      Multiple_Dates/Times:
        Single_Date/Time:
          Calendar_Date: 20050418
        Single_Date/Time:
          Calendar_Date: 20050419
        Single_Date/Time:
          Calendar_Date: 20050420
        Single_Date/Time:
          Calendar_Date: 20050421
        Single_Date/Time:
          Calendar_Date: 20050422
        Single_Date/Time:
          Calendar_Date: 20050423
        Single_Date/Time:
          Calendar_Date: 20040524
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: Unknown
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -124.793908
      East_Bounding_Coordinate: -124.628193
      North_Bounding_Coordinate: 48.409543
      South_Bounding_Coordinate: 48.149852
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Hydrographic Survey
      Theme_Keyword: Topographic Survey
      Theme_Keyword: LIDAR Survey
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Cape Alava
      Place_Keyword: Koitlah Point
      Place_Keyword: Tatoosh Island
      Place_Keyword: Cape Alava
      Place_Keyword: WA
      Place_Keyword: Olympic Coast
  Access_Constraints: None
  Use_Constraints:
    Acknowledgement of the existing conditions of the
    nearshore bathymetry and beach  would be appreciated
    in products derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Steven S. Intelmann
        Contact_Organization: Olympic Coast National Marine Sanctuary
      Contact_Position: Habitat Mapping Specialist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 115 E. Railroad Avenue
        Address: Suite 301
        City: Port Angeles
        State_or_Province: WA
        Postal_Code: 98362
        Country: USA
      Contact_Voice_Telephone: 360-457-6622
      Contact_Voice_Telephone: Ext. 22
      Contact_Facsimile_Telephone: 360-457-8496
      Contact_Electronic_Mail_Address: steve.intelmann@noaa.gov
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      SHOALS has demonstrated capabilities that meet US
      Army Corps of Engineers Hydrographic Survey accuracy
      requirements for Class 1 surveys and the International
      Hydrographic Organization nautical charting standards for
      Order 1.
  Logical_Consistency_Report: N/A
  Completeness_Report: N/A
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: +/- 3 meters (95% confidence)
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: +/- 25 cm (95% confidence)
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Army Corps of Engineers  JALBTCX
          Publication_Date: 20040923
          Title: Bathymetric &Topographic LIDAR Survey, Northwest Coast, Washington St.
          Edition: 1.1
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Multiple_Dates/Times:
            Single_Date/Time:
              Calendar_Date: 20050418
            Single_Date/Time:
              Calendar_Date: 20050419
            Single_Date/Time:
              Calendar_Date: 20050420
            Single_Date/Time:
              Calendar_Date: 20050421
            Single_Date/Time:
              Calendar_Date: 20050422
            Single_Date/Time:
              Calendar_Date: 20050423
            Single_Date/Time:
              Calendar_Date: 20050424
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: None
      Source_Contribution: FUGRO Pelagos Inc.
    Process_Step:
      Process_Description:
        The SHOALS airborne system acquires a tremendous
        volume of raw data during a single mission.  The lidar
        data are unique and require a specialized Ground Control
        System (GCS) for survey planning and post-processing.
        The GCS main functions
        1) import airborne data stored on removable hard drives;
        2) perform quality control checks on initial depths and
        horizontal positions;
        3) provide display and edit capabilities;
        4) calculate depth and position (XYZ) values for each
        sounding; and
        5) output final positions and depths for each sounding.
        The GCS possesses an automated capability to
        post-process the data to obtain corrected depth and
        horizontal positions within the specified system
        accuracies.
        This is accomplished by accurately identifying the surface
        and bottom returns from the airborne data.  Depths are
        determined by computing the time difference between the
        arrival of the surface and bottom returns.  Corrections are
        computed and applied for depth biases associated with
        light propogation, water level fluctuations, and various
        inherent system characteristics.  Surface waves are
        modeled and removed so that depths can be referenced
        to a common mean water surface.  Applying tidal
        corrections and/or KGPS corrections then produces a
        depth referenced to a known datum.
        A manual processing capability also allows evaluation of
        anomalous data by providing display and edit functions of
        sounding data and system parameters.
        Digital photos collected once per second (and
        easilly viewed during editing) permit visual scrutiny of the
        area to aid the hydrographer in deciding whether to
        exclude suspect data from further processing.
        Output from the GCS is a digital data set of XYZ
        (positions/depths) for each laser sounding that is
        compatible with most GIS and other contouring and
        mapping systems.
      Process_Date: 20050520
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Carol Lockhart
            Contact_Organization: Fugro Pelagos
          Contact_Position: Project Manager
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 3738 Ruffin Rd
            City: San Diego
            State_or_Province: CA
            Postal_Code: 92123
            Country: U.S.A.
          Contact_Voice_Telephone: 858 292 8922
          Contact_Facsimile_Telephone: 858-292-5308
    Process_Step:
      Process_Description:
        Both positional information and project control for the LIDAR survey were supplied by the KGPS in the ellipsoidal datum of NAD83.
        For ease of merging the data set with existing multibeam sounding data, survey instructions required the data to be projected
        during post-processing and delivered in the UTM Zone 10 projection.  The Geoid99 height model was used to convert the vertical
        datum from the ellipsoidal 3-D datum of NAD83 to the orthometric vertical datum NAVD88.  But to accurately merge the LIDAR
        data with existing multibeam sounding data, the data sets must obviously be in the same vertical reference frame (Milbert 2002).
        Since the multibeam sounding data were referenced to an averaged tidally-derived vertical datum (MLLW) and the LIDAR data
        were referenced to an orthometric vertical datum (NAVD88) based on Mean Sea Level (MSL), a VDatum model (Spargo et. al 2006)
        was used to vertically transform the LIDAR data to MLLW for compatibility and comparison with the multibeam sounding data.
        The VDatum model relates the NAVD88 to MLLW by using a grid, or zone, of tide model comparisons with known leveled
        tide benchmark stations to better account for the spatial variability of tidal dynamics over a given area (Milbert 2002;
        Spargo et. al 2006).  The VDatum model that was used is available for download at
        http://chartmaker.ncd.noaa.gov/csdl/vdatum_projectsWA.htm.
      Process_Date: April 2006
      Process_Time: Unknown
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: Olympic Coast National Marine Sanctuary
            Contact_Person: Steven S. Intelmann
          Contact_Position: Habitat Mapping Specialist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 115 E. Railroad Avenue
            Address: Suite 301
            City: Port Angeles
            State_or_Province: WA
            Postal_Code: 98362
            Country: USA
          Contact_Voice_Telephone: 360-457-6622
          Contact_Voice_Telephone: Ext. 22
          Contact_Facsimile_Telephone: 360-457-8496
          Contact_Electronic_Mail_Address: steve.intelmann@noaa.gov
    Process_Step:
      Process_Description: Metadata imported.
      Source_Used_Citation_Abbreviation: C:\DOCUME~1\intels\LOCALS~1\Temp\xml29.tmp
    Process_Step:
      Process_Description: Metadata imported.
      Source_Used_Citation_Abbreviation: C:\DOCUME~1\intels\LOCALS~1\Temp\xml2A.tmp
Spatial_Data_Organization_Information:
  Indirect_Spatial_Reference: Neah Bay to Cape Alava, Northwest Coast, Washington St.
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 14309
    Column_Count: 5831
    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: 10
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -123.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 2.000000
          Ordinate_Resolution: 2.000000
        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:
    Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988 - Transformed to MLLW
      Altitude_Resolution: 0.01
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
    Depth_System_Definition:
      Depth_Datum_Name: Mean lower low water
      Depth_Resolution: 0.01
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Distribution_Information:
  Distributor:
  Resource_Description: Downloadable Data
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 335.866
Metadata_Reference_Information:
  Metadata_Date: 20060531
  Metadata_Review_Date: 20050523
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Eddie Culppeper
        Contact_Organization: U.S. Army Corps of Engineers, Spatial Data Brach (OP-J)
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 109 St. Joseph St.
        City: Mobile
        State_or_Province: Alabama
        Postal_Code: 36602
        Country: U.S.A.
      Contact_Voice_Telephone: 251 690-3467
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
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    Profile_Name: ESRI Metadata Profile