Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: P.S. Chavez, Jr.
        Originator: J. Isbrecht
        Originator: G. Gabel
        Originator: P. Galanis
        Originator: S. Ross
        Originator: R. Anima
        Originator: S. Eittreim
        Originator: N. Maher
        Originator: S.C. Sides
        Originator: D.L. Soltesz
        Originator: M.G. Velasco
        Originator: Florence L. Wong
        Publication_Date: 2001
        Title:
          BSCATxx.TIF, QUAD75 - Sidescan sonar images and quadrangle
          index of the shelf seafloor
          in the Monterey Bay area from Point Ano Nuevo to Point Sur, California
        Edition: Version 1.0, February 13, 2001
        Geospatial_Data_Presentation_Form: map
        Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of01-179>
        Larger_Work_Citation:
          Citation_Information:
            Originator: Wong, F.L.
            Originator: Eittreim, S.E.
            Publication_Date: 2001
            Title:
              Continental Shelf GIS for the Monterey Bay
              National Marine Sanctuary
            Geospatial_Data_Presentation_Form: map
            Series_Information:
              Series_Name: U.S. Geological Survey Open-File Report
              Issue_Identification: 01-179
            Publication_Information:
              Publication_Place: Menlo Park, CA
              Publisher: U.S. Geological Survey
            Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of01-179/>
    Description:
      Abstract:
        The sidescan sonar image of the shelf seafloor of the
        Monterey Bay area was mosaicked from data collected between
        1995 and 1998 with
        three systems: Klein (towed), Simrad EM1000 (hull mounted),
        and EM300 (hull mounted).  The resolution of the processed
        data ranged from 40 cm to 2.5 m.  The data are presented
        here at a resolution of 2.5 m north of Monterey Canyon and
        5 m south of Monterey Canyon.  The sonar image is divided
        into 24 tiles that cover all or part of
        7.5-minute map quandrangles.  The
        polygon layer QUAD75 is an index for the 7.5-minute quadrangles.
        This is one of a collection of digital files of a geographic
        information system of spatially referenced data related to
        the USGS Coastal and Marine Geology Program "Monterey Bay
        National Marine Sanctuary Project"
        <http://walrus.wr.usgs.gov/mbms>.  The data were collected
        and analyzed between 1994 and 2000.
      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
        about the shallower areas of the Monterey Bay
        National Marine Sanctuary.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 1995
          Ending_Date: 1998
      Currentness_Reference: Ground Condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: As Needed
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -122.38230
        East_Bounding_Coordinate: -121.79293
        North_Bounding_Coordinate: 37.11902
        South_Bounding_Coordinate: 36.21493
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: Coastal Geology
        Theme_Keyword: Marine Geology
        Theme_Keyword: sidescan sonar
        Theme_Keyword: remote-sensing image
        Theme_Keyword: Klein
        Theme_Keyword: Simrad EM300
        Theme_Keyword: Simrad EM1000
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: Monterey Bay
        Place_Keyword: CA
        Place_Keyword: North Pacific Ocean
        Place_Keyword: Northern Pacific Ocean
        Place_Keyword: USA
        Place_Keyword: Monterey Bay National Marine Sanctuary
        Place_Keyword: Central California
        Place_Keyword: Point Ano Nuevo
        Place_Keyword: Santa Cruz
        Place_Keyword: Moss Landing
        Place_Keyword: Monterey
        Place_Keyword: Point Sur
        Place_Keyword: Ano Nuevo
        Place_Keyword: Davenport
        Place_Keyword: Santa Cruz
        Place_Keyword: Soquel
        Place_Keyword: Watsonville
        Place_Keyword: Moss Landing
        Place_Keyword: Marina
        Place_Keyword: Monterey
        Place_Keyword: Seaside
        Place_Keyword: Soberanes Point
        Place_Keyword: Point Sur
        Place_Keyword: Pfieffer Point
    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.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Florence L. Wong
          Contact_Organization:
            United States Geological Survey (USGS)
            Coastal and Marine Geology (CMG)
        Contact_Position: Geologist, GIS Coordinator
        Contact_Address:
          Address_Type: mailing and physical address
          Address: USGS, MailStop 999, 345 Middlefield Road
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025-3561
          Country: USA
        Contact_Voice_Telephone: (650) 329-5327
        Contact_Facsimile_Telephone: (650) 329-5190
        Contact_Electronic_Mail_Address: fwong@usgs.gov
    Native_Data_Set_Environment:
      SunOS, 5.7, sun4u UNIX
      ARC/INFO version 8.0.2
    Browse_Graphic:
      Browse_Graphic_File_Name: http://geopubs.wr.usgs.gov/open-file/of01-
179/images/bsimap.gif
      Browse_Graphic_File_Description: location map of backscatter images
      Browse_Graphic_File_Type: GIF
  Data_Quality_Information:
    Logical_Consistency_Report: Not applicable for raster data.
    Completeness_Report:
      Sidescan sonar images are discontinuous
      where survey tracklines were not run.
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: P.S. Chavez, Jr.
            Originator: J. Isbrecht
            Originator: G. Gabel
            Originator: P. Galanis
            Originator: S. Ross
            Originator: R. Anima
            Originator: S. Eittreim
            Publication_Date: 1998
            Title: Seafloor image map of the Monterey Bay region
            Geospatial_Data_Presentation_Form: map
            Online_Linkage:
http://TerraWeb.wr.usgs.gov/TRS/projects/MontereySonar/
        Type_of_Source_Media: electronic
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1995
              Ending_Date: 1998
          Source_Currentness_Reference: publication date
        Source_Citation_Abbreviation: Chavez and others, 1998
        Source_Contribution: explanation of methods, Klein, EM1000 data
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: S.L. Eittreim
            Originator: A.J. Stevenson
            Originator: N. Maher
            Publication_Date: 1998
            Title: Seafloor sidescan sonar image files as 5-m grids
            Geospatial_Data_Presentation_Form: map
        Type_of_Source_Media: electronic file
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Single_Date/Time:
              Calendar_Date: 1998
          Source_Currentness_Reference: ground condition
        Source_Citation_Abbreviation: Eittreim and others, 1998
        Source_Contribution: EM300 sidescan sonar data
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Chavez, P.S., Jr.
            Originator: Isbrecht, J.
            Originator: Galanis, P.
            Originator: Gabel, G.L.
            Originator: Sides, S.C.
            Originator: Soltesz, D.L.
            Originator: Ross, S.L.
            Originator: Velasco, M.G.
            Title:
              Processing, mosaicking and management the
              Monterey Bay digital side-scan sonar images.
            Publication_Date: 2001
            Series_Information:
              Series_Name: Marine Geology
              Issue_Identification: xx
        Type_of_Source_Media: paper
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Single_Date/Time:
              Calendar_Date: 2001
          Source_Currentness_Reference: publication date
        Source_Citation_Abbreviation: Chavez and others, 2001
        Source_Contribution: description of image processing
      Process_Step:
        Process_Description:
          Klein sidescan sonar data.  USGS Coastal and Marine
          Geology (CMG) image processing group completed
          1-meter mosaic of sidescan sonar image for survey
          area between Point Ano Nuevo and Monterey Canyon.
          CMG processing blocks were numbered 1 through 13.
          CMG filename mbay_mosaic_blk01_blk13_1m.
        Process_Date: 19980930
      Process_Step:
        Process_Description:
          Converted Klein 1-meter mosaic from raw format (.BIL)
          to ArcInfo grid.  Cell values of 0 include
          NODATA.  Extracted polygon coverage of zero-value
          cells or cell clusters.  Modified coverage to
          retain truly NODATA polygons; converted polygon
          coverage to grid mask.  Applied NODATA mask to
          mosaic grid to redefine cells with 0 where there
          is no data to NODATA, leaving other 0 cells unchanged.
          Added 1 to value of grid so that
          lowest pixel value is 1.  Remapped range of
          sidescan grid values for better contrast.
        Process_Date: 200006
      Process_Step:
        Process_Description:
          EM1000 sidescan data from inner shelf between Moss
          Landing and Monterey.  Image (.BIL) files with
          2.5-m pixels for north half and south half
          downloaded from CMG image processing group.
          Converted images to ArcInfo grids.  Re-projected
          coordinates from Mercator projection to UTM.
          Combined north and south grids into one.
        Process_Date: 199803
      Process_Step:
        Process_Description:
          EM300 sidescan data south of Monterey Canyon and
          west of location of EM1000 data provided as 5-m
          ArcInfo grids by Norman Maher (MBARI).
        Process_Date: 200010
      Process_Step:
        Process_Description:
          Merged all grids of sonar image and subdivided them into
          7.5-minute quadrangles.  Cell size north of
          Monterey Canyon is 2.5 m; south of Monterey Canyon
          is 5 m.  Converted grids to TIFF images.
        Process_Date: 200002 to 200012
      Process_Step:
        Process_Description:
          First draft of metadata created by F.L. Wong using
          a modified version of FGDCMETA.AML on ARC/INFO data set
          BSCATxx.TIF
        Process_Date: 20010213
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Raster
    Raster_Object_Information:
      Raster_Object_Type: Pixel
      Row_Count: 5585 maximum for 2.5-m pixel images. 3505 for 5-m images
      Column_Count: 4522 maximum for 2.5-m pixels, 2267 for 5-m pixels
  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: 0.9996
              Longitude_of_Central_Meridian: -123.00000
              Latitude_of_Projection_Origin: 0.00000
              False_Easting: 500000.00
              False_Northing: 0.00
        Planar_Coordinate_Information:
          Planar_Coordinate_Encoding_Method: coordinate pair
          Coordinate_Representation:
            Abscissa_Resolution: 2.5 or 5
            Ordinate_Resolution: 2.5 or 5
          Planar_Distance_Units: meters
      Geodetic_Model:
        Horizontal_Datum_Name: nad83
        Ellipsoid_Name: GRS1980
        Semi-major_Axis: 6378137.0
        Denominator_of_Flattening_Ratio: 298.257
  Entity_and_Attribute_Information:
    Overview_Description:
      Entity_and_Attribute_Overview:
        Sidescan sonar data are presented as TIFF images where the
        pixel value represents the backscatter intensity of the
        sonar signal.
        Images BSCATxx.TIF for xx = 1 to 9, 10n, and 11n have 2.5-m
        pixel resolution with pixel values stretched and desampled
        from 1-m pixel Klein sidescan data collected during these
        surveys J2-95-MB, J6-95-MB, M2-95-MB, M1-96-MB, J3-97-MB,
        and J3-98-MB (http://walrus.wr.usgs.gov/infobank).
        Images BSCATyy.TIF for yy = 10s, 11s, and 12 through 22 have
        5-m pixel resolution with pixel values stretched from
        processed EM1000 (P1-95-MB) and EM300 (A4-98-MB) data
        (http://walrus.wr.usgs.gov/infobank).
        >  IMAGE        ROWS COLS  FILESIZE (Mb)
        >  bscat01.tif  5281 4486	   24
        >  bscat02.tif  2443 2237	    5
        >  bscat03.tif  3995 2568	   10
        >  bscat04.tif  5585 4500	   25
        >  bscat05.tif  3944 4507	   18
        >  bscat06.tif  4531 4514	   20
        >  bscat07.tif  2884 1360	    4
        >  bscat08.tif  2406 2901	    7
        >  bscat09.tif  3285 4514	   15
        >  bscat10n.tif 3306 4522	   15
        >  bscat11n.tif 3506 2791	    3
        >  bscat10s.tif 1130 2260	   10
        >  bscat11s.tif 1105 1321	    1
        >  bscat12.tif  2795  565	    2
        >  bscat13.tif  2798 2264	    6
        >  bscat14.tif  2801  979	    3
        >  bscat15.tif  2795  565	    2
        >  bscat16.tif  2798 2267	    6
        >  bscat17.tif   269  363	    1
        >  bscat18.tif  2795  566	    2
        >  bscat19.tif  2798 1443	    4
        >  bscat20.tif  2795 1583	    4
        >  bscat21.tif  2797 1526	    4
        >  bscat22.tif   763 1506	    1
        The image boundaries in UTM coordinates are
        >    IMAGE        XMIN   YMIN     XMAX   YMAX
        >  bscat01.tif   555519 4095055  566734 4108258
        >  bscat02.tif   566623 4095136  572216 4101243
        >  bscat03.tif   560422 4085148  566842 4095136
        >  bscat04.tif   566733 4081268  577983 4095231
        >  bscat05.tif   577855 4081363  589123 4091223
        >  bscat06.tif   588977 4081472  600262 4092800
        >  bscat07.tif   600100 4081596  603500 4088806
        >  bscat08.tif   570857 4075349  578110 4081364
        >  bscat09.tif   577983 4073261  589268 4081473
        >  bscat10n.tif  589122 4073330  600427 4081595
        >  bscat11n.tif  600263 4072970  607241 4081735
        >  bscat10s.tif  589125 4067604  600425 4073254
        >  bscat11s.tif  600265 4067729  606870 4073254
        >  bscat12.tif   586590 4053629  589415 4067604
        >  bscat13.tif   589270 4053739  600590 4067729
        >  bscat14.tif   600425 4053864  605320 4067869
        >  bscat15.tif   586730 4039764  589555 4053739
        >  bscat16.tif   589415 4039874  600750 4053864
        >  bscat17.tif   600590 4052659  602405 4054004
        >  bscat18.tif   586870 4025899  589700 4039874
        >  bscat19.tif   589555 4026009  596770 4039999
        >  bscat20.tif   581930 4012034  589845 4026009
        >  bscat21.tif   589700 4012144  597330 4026129
        >  bscat22.tif   589845 4008449  597375 4012264
        Polygon coverage QUAD75 consists of the outlines
        for 7.5-minute quadrangles by which the backscatter images
        are numbered.  Its attributes are:
        > QUAD - quadrangle number 1 through 22
        > NAME - informal quadrangle names adapted from standard
        >         7.5-minute topographic quadrangle names
        >     1 Ano Nuevo
        >     2 Davenport
        >     3 Santa Cruz W2
        >     4 Santa Cruz W1
        >     5 Santa Cruz
        >     6 Soquel
        >     7 Watsonville W
        >     8 Moss Landing W3
        >     9 Moss Landing W2
        >    10 Moss Landing W1
        >    11 Moss Landing
        >    12 Marina W2
        >    13 Marina W1
        >    14 Marina
        >    15 Monterey W
        >    16 Monterey
        >    17 Seaside
        >    18 Soberanes Point W
        >    19 Soberanes Point
        >    20 Point Sur W
        >    21 Point Sur
        >    22 Pfieffer Point W
      Entity_and_Attribute_Detail_Citation: none
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:
            United States Geological Survey (USGS)
            Coastal and Marine Geology (CMG)
          Contact_Person: Florence L. Wong
        Contact_Position: Geologist, GIS Coordinator
        Contact_Address:
          Address_Type: mailing and physical address
          Address: USGS, MailStop 999, 345 Middlefield Road
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025-3561
          Country: USA
        Contact_Voice_Telephone: (650) 329-5327
        Contact_Facsimile_Telephone: (650) 329-5190
        Contact_Electronic_Mail_Address: fwong@usgs.gov
    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.
      Any use of trade, product, or firm names is for descriptive purposes
      only and does not imply endorsement by the U.S. Government.
      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.
    Resource_Description: USGS Open-File Report 01-179
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: TIFF
          Format_Information_Content: sidescan sonar images of the seafloor
          Transfer_Size: 200 megabytes
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: http://geopubs.wr.usgs.gov/open-
file/of01-179
      Fees: none
  Metadata_Reference_Information:
    Metadata_Date: 20010327
    Metadata_Review_Date: 200105
    Metadata_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:
            United States Geological Survey (USGS)
            Coastal and Marine Geology (CMG)
          Contact_Person: Florence L. Wong
        Contact_Position: Geologist, GIS Coordinator
        Contact_Address:
          Address_Type: mailing and physical address
          Address: USGS, MailStop 999, 345 Middlefield Road
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025-3561
          Country: USA
        Contact_Voice_Telephone: (650) 329-5327
        Contact_Facsimile_Telephone: (650) 329-5190
        Contact_Electronic_Mail_Address: fwong@usgs.gov
    Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
("CSDGM version 2")
    Metadata_Standard_Version: FGDC-STD-001-1998
    Metadata_Access_Constraints: none
    Metadata_Use_Constraints: none