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Identification_Information:

  Citation:
    Citation_Information:
      Originator: U.S. Geological Survey (USGS) , Coastal and Marine Geology Program (CMGP) 
      Publication_Date: 20140318
      Title:
        Data of field activity 85028 (F-2-85-GM) in Gulf Mexico from
        09/05/1985 to 09/29/1985
      Publication_Information:
        Publisher: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
        Publication_Place: Menlo Park, CA
      Online_Linkage: http://walrus.wr.usgs.gov/infobank/gos/f-2-85-gm.fmeta.xml
      Online_Linkage: http://walrus.wr.usgs.gov/infobank/f/f285gm/html/f-2-85-gm.meta.html
      Online_Linkage: http://quashnet.er.usgs.gov/data/1985/85028/index.html

  Description:
    Abstract:
      United States Geological Survey, Reston, Virginia. Chief
      Scientists: Bonnie McGregor, Neil Kenyon. Data
      (sidescansonar, airgun, 3dot5khz, 10khz, magnetics, loranc,
      transitsatellite, gps) of field activity 85028 (F-2-85-GM) in
      Gulf Mexico from 09/05/1985 to 09/29/1985,
      http://walrus.wr.usgs.gov/infobank/f/f285gm/html/f-2-85-gm.meta.html.

    Purpose:
      These data and information are intended for science
      researchers, students from elementary through
      college, policy makers, and general public.

    Supplemental_Information:

      Equipment Used -

      sidescansonar                 GLORIA long-range side-scan sonar

      airgun                        160 and 80 cu in single-channel seismic-reflection system

      3dot5khz                      3.5 khz bathymetry

      10khz                         10 khz bathymetry

      magnetics

      loranc                        Loran C

      transitsatellite              Satellite receiver

      gps                           Global Positioning System

      Notes -

      LEG 2:

        

      Leg 2 focused in the central Gulf of Mexico on the Mississippi Fan

      seaward of Louisiana, Mississippi, Alabama, and Florida.  The area mapped

      with GLORIA on this leg was approximately 45,000 square nautical miles.

        

      Data Summary - Leg 2

        

      At sea total number of days:	24 days

        

      Mileage for each type of data collected:

        

      GLORIA sidescan		4520 nm		8362 km

        

      3.5 kHz			4543 nm		8405 km

        

      10 kHz			4594 nm		8504 km

        

      air gun			4330 nm		8010 km

        

      magnetometer		4594 nm		8504 km

        

      Comments Leg 2:

        

      The cruise was very successful.  Equipment down time was minimal.

      The warm surface water temperature continued to limit the GLORIA range

      necessitating closer line spacing than planned.  The presence of the Loop

      Current for the last half of the cruise not only provided warm surface

      water temperatures, but also a strong current, often approaching 4 knots.

      The current shear prevented the GLORIA fish from towing parallel to the

      ship's track, introducing some distortion in the mosaic.  In the northeast

      portion of the Gulf, near DeSoto Canyon, fishing boats with lines set

      across our proposed track caused a problem requiring several lines to be

      terminated early.  Leg 3A will collect data to cover these data gaps.  An

      additional 8 days will be necessary on Leg 3 to complete the coverage of the

      Mississippi Fan.

        

      The objective of this leg was to map the surface features in the

      Mississippi Fan area.  Although the channel of the Mississippi could be

      identified on the mid-fan, over much of the fan the channel was obscured by

      a major submarine slide or slides.  Flow patterns were well displayed on the

      surface and the slide could be mapped to the base of the West Florida

      Escarpment.  Another submarine slide was also present in the DeSoto Canyon

      area.  The meandering channel from DeSoto Canyon was traced from this

      slide seaward parallel to the escarpment.  Mass wasting appears to be an

      important process in distributing sediments in the deep water of the central

      Gulf.  The Sigsbee Escarpment was mapped to the east as far as the

      Mississippi Canyon.  Isolated salt diapirs were present to the east of the

      Mississippi Canyon.

      Publications -

      Paskevich, Valerie F.; Wong, Florence L.; O'Malley, John J.; Stevenson,

      Andrew J.; Gutmacher, Christina E., 2010, GLORIA sidescan-sonar imagery

      for parts of the U.S. Exclusive Economic Zone and adjacent areas: U.S.

      Geological Survey Open-File Report 2010-1332,

      http://pubs.er.usgs.gov/publication/ofr20101332.

        

      Twichell, David C., and Paskevich, Valerie, 1996, GLORIA sidescan sonar

      field data and navigation data collected in the Gulf of Mexico during

      R/V Farnella cruises in 1982 and 1985: U.S. Geological Survey Open-File

      Report 96-707,

      http://woodshole.er.usgs.gov/publications/of96-707/OPR96_707/INTRO.HTM.


      Similar information is available for thousands
      of other USGS/CMG-related Activities.

      If known, available are Activity-specific
      navigation, gravity, magnetics, bathymetry,
      seismic, and sampling data; track maps; and
      equipment information; as well as summary
      overviews, crew lists, and information
      about analog materials.

      If available, access to physical samples is
      described in the "WR CMG Sample Distribution
      Policy" at:
      http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html

      Primary access to the USGS/CMG Information
      Bank's digital data, analog data, and
      metadata is provided through...
      http://walrus.wr.usgs.gov/infobank/

      This page accomodates a variety of search
      approaches (e.g., by platform, by region,
      by scientist, by equipment type, etc.).

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19850905
        Ending_Date: 19850929

    Currentness_Reference: ground condition

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -90.61030
      East_Bounding_Coordinate: -85.14300
      North_Bounding_Coordinate: 29.20430
      South_Bounding_Coordinate: 25.08760

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: geoscientificinformation
      Theme_Keyword: oceans
    Theme:
      Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
      Theme_Keyword: EARTH SCIENCE > OCEANS
    Theme:
      Theme_Keyword_Thesaurus: USGS CMG InfoBank
      Theme_Keyword: Marine Geology

    Place:
      Place_Keyword_Thesaurus: USGS CMG InfoBank
      Place_Keyword: Central Gulf of Mexico EEZ
      Place_Keyword: Gulf Coast
      Place_Keyword: Gulf Mexico
      Place_Keyword: Gulf of Mexico
      Place_Keyword: USA


  Access_Constraints:
    Physical materials are under controlled on-site access.

    If available, access to physical samples is described
    in the "WR CMG Sample Distribution Policy" at:
    http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html

  Use_Constraints:
    Please recognize the U.S. Geological Survey (USGS) as
    the source of this information.

    Physical materials are under controlled on-site access.

    Some USGS information accessed through this means
    may be preliminary in nature and presented without
    the approval of the Director of the USGS.  This
    information is provided with the understanding
    that it is not guaranteed to be correct or complete
    and conclusions drawn from such information are
    the responsibility of the user.

    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_Organization_Primary:
        Contact_Organization: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
        Contact_Person: Clint Steele 

      Contact_Position: InfoBank Group Leader 

      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) 329-5055
      Contact_Facsimile_Telephone: (650) 329-5190

      Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov 


  Browse_Graphic:
    Browse_Graphic_File_Name: http://walrus.wr.usgs.gov/infobank/f/f285gm/html/f-2-85-gm.nav.gif
    Browse_Graphic_File_Description: Trackline map of F-2-85-GM
    Browse_Graphic_File_Type: GIF

  Data_Set_Credit:
    Bonnie McGregor (Chief Scientist, USGS Miami);
    Dave Twichell (Chief Scientist, USGS Woods Hole);
    John Schlee (Geologist, USGS Woods Hole);
    Ron Circe (Unsp, USGS Woods Hole);
    John Wagner (Geologist, LSU (Louisiana State University, USA));
    Malcolm Harris (GLORIA Engineer, IOS (Institute of Oceanographic Sciences, U.K.));
    Neil Kenyon (Chief Scientist, IOS);
    Eric Darlington (GLORIA Engineer, IOS);
    Colin Jacobs (Geologist, IOS);
    Ross Walker (GLORIA Engineer, IOS);
    Robert Wallace (Airgun Tech, IOS);
    Stephen Williams (Geologist, IOS);
    Martin Beney (Shipboard Computing, RVS (Research Vessel Services, U.K.));
    Roy Hadgraft (Captain, J. Marr and Sons)

  Native_Data_Set_Environment: Digital, ASCII
  Cross_Reference:
    Citation_Information:
      Originator: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
      Publication_Date: Unknown
      Title: USGS/CMG Information Bank 
      Publication_Information:
        Publisher: U.S. Geological Survey (USGS)  Coastal and Marine Geology (CMG) 
        Publication_Place: Menlo Park, CA
      Online_Linkage: http://walrus.wr.usgs.gov/infobank/
      Online_Linkage: http://quashnet.er.usgs.gov/data/1985/85028/index.html
      Other_Citation_Details:
        Paskevich, Valerie F.; Wong, Florence L.; O'Malley, John J.; Stevenson,
        Andrew J.; Gutmacher, Christina E., 2010, GLORIA sidescan-sonar imagery
        for parts of the U.S. Exclusive Economic Zone and adjacent areas: U.S.
        Geological Survey Open-File Report 2010-1332,
        http://pubs.er.usgs.gov/publication/ofr20101332.
          
        Twichell, David C., and Paskevich, Valerie, 1996, GLORIA sidescan sonar
        field data and navigation data collected in the Gulf of Mexico during
        R/V Farnella cruises in 1982 and 1985: U.S. Geological Survey Open-File
        Report 96-707,
        http://woodshole.er.usgs.gov/publications/of96-707/OPR96_707/INTRO.HTM.



Data_Quality_Information:

  Attribute_Accuracy:
    Attribute_Accuracy_Report: Identified as best available version.

  Logical_Consistency_Report: Unspecified

  Completeness_Report:
    Start and end date/times of data
    >Navigation Data (f-2-85-gm.060 [GPS])
    >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    >198509061808000    198509280232000
    >198509280238000    198509281800000
    >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Unspecified

    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: Unspecified

  Lineage:

    Process_Step:
      Process_Description:
        Navigation Data
        >/infobank/f/f285gm/nav/f-2-85-gm.060
        >time/lat/long style, multi-record, in caps, without tabs
        >temporal-spatial data
        >copied and reformatted from Navigation Data R/V Farnella 85, Leg 2 in:
        >Twichell, David C., and Paskevich, Valerie, 1996, GLORIA sidescan sonar field data
        >and navigation data collected in the Gulf of Mexico during R/V Farnella cruises
        >in 1982 and 1985: U.S. Geological Survey Open-File Report 96-707,
        >http://woodshole.er.usgs.gov/publications/of96-707/OPR96_707/INTRO.HTM.
        > - C Degnan, 3/18/2014
        >       1         2         3
        >3456789012345678901234567890123456
        >
      Process_Date: 20140318

      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
            Contact_Person: Clint Steele 

          Contact_Position: InfoBank Group Leader 

          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) 329-5055
          Contact_Facsimile_Telephone: (650) 329-5190

          Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov 


Spatial_Data_Organization_Information:

  Indirect_Spatial_Reference: Gulf Mexico
  Direct_Spatial_Reference_Method: Point

  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point


Spatial_Reference_Information:

  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.00001
      Longitude_Resolution: 0.00001
      Geographic_Coordinate_Units: Decimal degrees

  Vertical_Coordinate_System_Definition:
    Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values


Entity_and_Attribute_Information:

  Overview_Description:
    Entity_and_Attribute_Overview: Navigation with Time Stamp 


Distribution_Information:

  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
        Contact_Person: Clint Steele 

      Contact_Position: InfoBank Group Leader 

      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) 329-5055
      Contact_Facsimile_Telephone: (650) 329-5190

      Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov 

  Resource_Description: Downloadable Data 85028 (F-2-85-GM) data set 

  Distribution_Liability:
    Please recognize the U.S. Geological Survey (USGS) as
    the source of this information.

    Physical materials are under controlled on-site access.

    Some USGS information accessed through this means
    may be preliminary in nature and presented without
    the approval of the Director of the USGS.  This
    information is provided with the understanding
    that it is not guaranteed to be correct or complete
    and conclusions drawn from such information are
    the responsibility of the user.

    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.

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ASCII
        File_Decompression_Technique: No compression applied
        Transfer_Size: 1.0

      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://walrus.wr.usgs.gov/infobank/f/f285gm/html/f-2-85-gm.nav.html

    Fees: None


Metadata_Reference_Information:

  Metadata_Date: 20140318

  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG) 
        Contact_Person: Clint Steele 

      Contact_Position: InfoBank Group Leader 

      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) 329-5055
      Contact_Facsimile_Telephone: (650) 329-5190

      Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov 

  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



      
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Page Last Modified: Tue Mar 18 14:17:24 PDT 2014  (chd)