Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Luke D. Trusel
        Originator: Guy R. Cochrane
        Originator: Lisa L. Etherington
        Originator: Ross D. Powell
        Originator: Larry A. Mayer
        Publication_Date: 2010
        Title:  metadata-bathy.txt - Marine Benthic Habitat Mapping of Muir Inlet, Glacier Bay National Park and Preserve, Alaska 
        Edition: 1.0
        Geospatial_Data_Presentation_Form: raster digital data
        Series_Information:
          Series_Name: Scientific Investigations Map
          Issue_Identification: 3122
        Publication_Information:
          Publication_Place: Reston, VA
          Publisher: U.S. Geological Survey
        Online_Linkage: http://pubs.usgs.gov/sim/3122

    Description:
      Abstract: This data set consists of 5.5 m gridded multibeam bathymetry data for Muir Inlet in Glacier Bay, Alaska.
      Purpose: These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.
      Supplemental_Information:
        Additional information about the field activities from which this data set was derived are available online at: http://pubs.usgs.gov/sim/3122

        Any use of trade, product, or firm names is for descriptive purposesonly and does not imply endorsement by the U.S. Government.

        Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcView format, this metadata file may include some ArcView-specific terminology.
    Time_Period_of_Content:
      Time_Period_Information:
        Single_Date/Time:
          Calendar_Date: 200406
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -136.381293
        East_Bounding_Coordinate: -136.055918
        North_Bounding_Coordinate: 59.092510
        South_Bounding_Coordinate: 58.793645
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: General
        Theme_Keyword: Benthic habitats
        Theme_Keyword: seafloor geology
        Theme_Keyword: substrates
        Theme_Keyword: glacial sedimentation
        Theme_Keyword: glacimarine processes
        Theme_Keyword: multibeam bathymetry
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificinformation
        Theme_Keyword: imageryBaseMapsEarthCover
        Theme_Keyword: inlandWaters
        Theme_Keyword: oceans
      Place:
        Place_Keyword_Thesaurus: General
        Place_Keyword: East Arm
        Place_Keyword: Southeast Alaska
        Place_Keyword: USA
        Place_Keyword: Marine reserve
      Place:
        Place_Keyword_Thesaurus: Geographic Names Information System
        Place_Keyword: Muir Inlet
        Place_Keyword: Glacier Bay National Park and Preserve and Preserve
        Place_Keyword: Glacier Bay
        Place_Keyword: Alaska
    Access_Constraints: None
    Use_Constraints:
      Please recognize the U.S. Geological Survey (USGS) as the source of this information.

      Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.

      The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

      This information is not intended for navigational purposes. 
      Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

    Data_Set_Credit: This file is a subset of the original multibeam bathymetric data collected in June 2004 aboard the R/V Maurice Ewing as part of cruise EW0408 to investigate marine paleoclimatic proxies. This work was funded by the National Science Foundation ((NSF# OCE 0351089, to Powell). A Kongsberg Simrad EM-1002 multibeam echosounder was used to collect bathymetric and acoustic backscatter data.
    Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500
  Data_Quality_Information:
    Logical_Consistency_Report:
      Contact authors for
      an explanation of the fidelity of relationships in the data set and tests used.
    Completeness_Report:
      Contact authors for
      information about omissions, selection criteria, generalization, definitions used, and other rules used to derive the data set.
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Navigation was recorded by a C-Nav ultra-high resolution differential global positioning system with maximum accuracy of < 0.1 m horizontally and 0.2 m vertically.
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: Navigation was recorded by a C-Nav ultra-high resolution differential global positioning system with maximum accuracy of < 0.1 m horizontally and 0.2 m vertically.
    Lineage:
      Process_Step:
        Process_Description: Benthic habitat and seafloor substrate mapping for Muir Inlet were conducted using multibeam sonar data that were collected onboard the R/V Maurice Ewing cruise EW0408 on September 7, 2004. A Kongsberg Simrad EM-1002 multibeam echosounder was installed on the Ewing for the purposes of high-resolution bathymetric surveying specific to the shallow to intermediate depth of the southern Alaska study locations. The EM-1002 simultaneously collects both bathymetric and co-registered backscatter data, providing information about seafloor morphology and composition. The EM-1002 used a fixed +/- 75 degree, 400 m fixed maximum swath. Navigation was recorded by a C-Nav ultra-high resolution differential global positioning system with maximum accuracy of < 0.1 m horizontally and 0.2 m vertically. Vessel roll, pitch, and heave were recorded with a POS-MV motion sensor. This information was integrated in the Simrad software with water column CTD data, positioning from the C-Nav, and offset information between the transducer, antenna, and motion sensor to correct for ship motion and produce accurate depth measurements. A team of University of New Hampshire (UNH) scientists using CARIS HIPS and the CUBE algorithm within IVS3D Fledermaus processed on board data. Further processing of backscatter data was later completed using Geocoder software by Luciano Fonseca of UNH to remove data artifacts and enhance details (cf. Fonseca and Calder 2005). Data were cleaned for errant points, referenced to mean lower low water (MLLW) by correcting for tide, and finally transformed into depth versus absolute position. The bathymetry and backscatter data were gridded using a 5.5 m, and 2.5 m horizontal grid resolutions, respectively. These data cover about 75 km2 or nearly 70% of Muir Inlet extending from the just below sea level to over 300 m depth in the deepest fjord basins, from its southern entrance sill to the Muir Glacier delta in its northern reaches.
        Process_Date: 2004 through 2009
        Process_Contact:
          Contact_Information:
            Contact_Person_Primary:
              Contact_Person: Larry A. Mayer
              Contact_Organization: Center for Coastal and Ocean Mapping / NOAA-University of New Hampshire Joint Hydrographic Center
            Contact_Position: Professor and Director
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 24 Colovos Rd.
              City: Durham
              State_or_Province: NH
              Postal_Code: 03824
              Country: USA
            Contact_Voice_Telephone: (603) 862-2615
            Contact_Facsimile_Telephone: (603) 862-0839
            Contact_Electronic_Mail_Address: lmayer@ccom.unh.edu
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Raster
    Raster_Object_Information:
      Raster_Object_Type: Grid Cell
      Row_Count: 5992
      Column_Count: 3296
      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: 8
            Transverse_Mercator:
              Scale_Factor_at_Central_Meridian: 0.999600
              Longitude_of_Central_Meridian: -135.000000
              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: 5.500000
            Ordinate_Resolution: 5.500000
          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: 0.2
        Depth_Distance_Units: meters
        Depth_Encoding_Method: Attribute values
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: ew0408_bathy
        Entity_Type_Definition: Bathymetry data from EW0408.
        Entity_Type_Definition_Source: USGS
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey (USGS)
          Contact_Person: Information Services Associate
        Contact_Position: Information Services
        Contact_Address:
          Address_Type: mailing and physical address
          Address: USGS, Box 25286
          City: Denver
          State_or_Province: C0
          Postal_Code: 80225
          Country: USA
        Contact_Voice_Telephone: 1-888-ASK-USGS     
    Resource_Description: Downloadable data and Map-on-Demand
    Distribution_Liability:
      Please recognize the U.S. Geological Survey (USGS) as the source of this information.

      Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.

      The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
    Standard_Order_Process:
      Digital_Form: 
        Digital_Transfer_Information:
          Format_Name: GRID
          Format_Version_Date: 2009
          Format_Specification: ESRI GRID
          File_Decompression_Technique: zip
          Transfer_Size: 76.273
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: http://pubs.usgs.gov/sim/3122/
      Fees: None
    Technical_Prerequisites: These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGISÆ or ArcViewÆ 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of the importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.
  Metadata_Reference_Information:
    Metadata_Date: 20090306
    Metadata_Review_Date: 20090227
 Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization:
          United States Geological Survey (USGS)
          Coastal and Marine Geology Program (CMGP)
        Contact_Person: Guy R. Cochrane
      Contact_Position: Geophysicist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: USGS, 400 Natural Bridges Drive
        City: Santa Cruz
        State_or_Province: CA
        Postal_Code: 95060-5792
        Country: USA
      Contact_Voice_Telephone: (831) 427-4754
      Contact_Facsimile_Telephone: (831) 427-4748
      Contact_Electronic_Mail_Address: gcochrane@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2")
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Access_Constraints: none