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Identification_Information:

  Citation:
    Citation_Information:
      Originator: U.S. Geological Survey (USGS) , Coastal and Marine Geology Program (CMGP) 
      Publication_Date: 20131030
      Title:
        Geological data of field activity W-4-09-WO in Pacific
        Northwest, Oregon to Canadian border: Hydrate Ridge, Barkley
        Canyon,and Bullseye Vent from 08/05/2009 to 08/11/2009
      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/w-4-09-wo.fmeta.xml
      Online_Linkage: http://walrus.wr.usgs.gov/infobank/w/w409wo/html/w-4-09-wo.meta.html

  Description:
    Abstract:
      Monterey Bay Aquarium Research Institute,United States
      Geological Survey, Menlo Park, California. Chief Scientist:
      Charlie Paull (MBARI). Geological data of field activity
      W-4-09-WO in Pacific Northwest, Oregon to Canadian border:
      Hydrate Ridge, Barkley Canyon,and Bullseye Vent from
      08/05/2009 to 08/11/2009,
      http://walrus.wr.usgs.gov/infobank/w/w409wo/html/w-4-09-wo.meta.html.

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

    Supplemental_Information:

      Notes -

      Our AUV mapping and ROV diving operations associated with MBARI’s northern expedition this summer are focused on investigatingknown gas vents, chemosynthetic biological communities (CBC), and gas hydrate bearing sites along the North American margin. The plans for the expedition involve collecting a series of AUV mapping surveys from the R/V Zephyr at four sites. This data will then be used to direct Doc Ricketts dives to ground truth the mapping surveys and to help direct the design of other experiments and installations. Among sites include the two summits of Hydrate Ridge

      (Oregon), Bullseye Vent (Canada), and Barkley Canyon (Canada). These sites continue to be targets for exploration and experimentation by researchers at MBARI and many other institutions.

      The installation of a seafloor observatory to monitor natural variations in gas and gas hydrate dynamics and to conduct perturbation experiments remains one of the most supported concepts within the various Ocean Observing Initiative efforts. The planned sites for the installation of gas hydrate observatories, as part of NEPTUNE Canada (including future capacity to include an IODP CORK), are Bullseye vent and Barkley

      Canyon. The other candidate for a cable-connected system is Hydrate Ridge. While an initial deployment of instruments is planned for NEPTUNE Canada in 2009, detailed high-resolution mapping is still lacking in parts of these areas and is necessary for the long-term planning for expansion of hydrate observatory infrastructure. This can be best (and perhaps only) provided with a system like the MBARI mapping AUV.

      A particular focus of this expedition is the nature and origin of the micro-topography associated with these gas-rich seafloor environments. Visual observations in many such environments have already shown that the seafloor where CBCs are on the surface and gas hydrate are believed to be in the near subsurface is commonly associated with seafloor blisters or mounds of various sizes, shallow depressions (e.g., ~3 m wide and ~1 m deep), as well as an occasional small up-turned ridge of truncated strata. The origin of this topography remains unexplained, yet is potentially critical for assessing the extent to which gas hydrates are geo-hazards and to understand how gas hydrates may shape the seafloor. Moreover, up-to-date maps that document these features do not exist, largely because of the limitations of previously available surveying tools. We are interested in documenting these features and evaluating two possible processes that may play a role in creating these features:

      (a) The area around these vents may be experiencing seafloor modification because

      of gas hydrate growth. Subsurface gas hydrate formation may inflate the seafloor producing pingo-like features that range from 1 to 10 m in height and width. When sections of seafloor contain >92% gas hydrate by volume they are buoyant in seawater.

      Thus, gas hydrate-bearing sediment masses may break loose from the seafloor and float away, leaving depressions on the seafloor (Paull et al., 1996). Repeat visits with an ROV or HOV to vent sites in the Gulf of Mexico (Roberts et al., 2001) and Barkley Canyon

      (Ross Chapman, personal communication) have shown that gas hydrate mounds observed in previous years have disappeared, apparently leaving holes. Presently, it is unknown whether these changes are of a magnitude that will be within the resolution of the

      mapping tools on the AUV.

      (b) We will also focus on documenting the extent and importance of seafloor erosion on the flanks of these structures. Occurrences of carbonate-cemented nodules and concretions exposed on the seafloor that contain cements with light carbon isotopes, indicating a contribution of methane-derived carbon, are commonly interpreted to be indicators of seafloor fluid venting and occur around all these vent systems. However, the fine-grained clastic sediments that typically host these carbonates indicate that many, if not most, of these carbonates were formed within the subsurface, presumably associated with anaerobic oxidation of methane at the sulfate-methane transition zone. We hypothesize that the widespread occurrence of these carbonates on the seafloor may result from persistent seafloor erosion, which preferentially removes the uncemented sediments and leaves the more resistant, cemented sediments standing in relief. Combined multibeam bathymetry, sub-bottom profiling, and side-scan sonar data obtained by the mapping AUV will provide a basic context to understand the nature of these systems and the broad area around them. ROV ground truth sampling also will be required to evaluate these questions.

      An MBARI mapping AUV survey was conducted at Barkley Canyon in 2007.

      However, we are interested in returning, in part, to assess whether any changes in the morphology can be quantified and to refine and enlarge the existing survey coverage.

      The existing schedule allows for up to 7 18-hour long AUV mapping survey missions. We have scheduled this as 2 at Hydrate Ridge (44° 34’N 125° 09’W); 2 at Bullseye vent (48° 41’ N 126° 51’W); 2 at Barkley Canyon (48° 19’N, 126° 04 W); and one as a contingency. These would be followed by a 10-day Western Flyer expedition out of Newport, Oregon, to ground truth these survey areas. We intend to work with Ross Chapman (University of Victoria) on the Barkley Canyon surveys and Michael Riedel (McGill University) on the Bullseye vent surveys, both as a scientific collaboration and to assist in plans for the installation of Neptune observatories.

      The day-by-day plan for this trip will be highly dependant on the weather and the results of the AUV survey’s. However, it is likely that we will dive on Hydrate Ridge the first day, as it will make logistical sense. On this dive we will focus on sampling up the side of the feature called the Pinnacle which has that has been described as an upward growing chemoherm (e.g., Teicher et al., 2005), but we hypothesis it is an erosional feature (Paull and Ussler, 2008).

      At Barkley canyon we anticipate picking up some gear of Ross Chapman’s. At Bulleye Vent we expect to deploy an Osmo-sampler probe that is to be stuck into the sediment. This probe is designed by Laura Lapham. We believe that this is of a size that will allow it to be carried on the Doc Ricketts.

      Publications -

      ____, 2009, 2009 Pacific Northwest expedition leg 3

      Monterey Bay Aquarium Research Institute, accessed 22 October 2009, URL:

      http://www.mbari.org/expeditions/Northern09/L3/index_L3.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: 20090805
        Ending_Date: 20090811

    Currentness_Reference: ground condition

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -126.90771
      East_Bounding_Coordinate: -126.06196
      North_Bounding_Coordinate: 48.71552
      South_Bounding_Coordinate: 48.30668

  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:
      Place_Keyword: North Pacific Ocean
      Place_Keyword: Northern Pacific Ocean
      Place_Keyword: OR
      Place_Keyword: Pacific Northwest, Oregon to Canadian border: Hydrate Ridge, Barkley Canyon,
      Place_Keyword: Pacific Northwest, Oregon to Canadian border: Hydrate Ridge, Barkley Canyon,
      Place_Keyword: USA
      Place_Keyword: WA
      Place_Keyword: Washington / Oregon
      Place_Keyword: Washington-Oregon
      Place_Keyword: eye Vent


  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 


  Data_Set_Credit:
    Charlie Paull);
    Bill Ussler);
    Michael Riedel);
    Mary McGann);
    Laura Lapham);
    Tessie Menotti);
    Yireng Cho)

  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/
      Other_Citation_Details:
        ____, 2009, 2009 Pacific Northwest expedition leg 3
        Monterey Bay Aquarium Research Institute, accessed 22 October 2009, URL:
        http://www.mbari.org/expeditions/Northern09/L3/index_L3.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 (w-4-09-wo.060 [GPS])
    >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    >200908051654540    200908051654540
    >200908051740290    200908051740290
    >200908051931290    200908051931290
    >200908052048130    200908052048130
    >200908060021480    200908060021480
    >200908061443290    200908061443290
    >200908061520530    200908061520530
    >200908061548190    200908061548190
    >200908061619470    200908061619470
    >200908061642470    200908061642470
    >200908061926320    200908061926320
    >200908061954220    200908061954220
    >200908062013470    200908062013470
    >200908062040340    200908062040340
    >200908062111000    200908062111000
    >200908071542250    200908071542250
    >200908071614500    200908071614500
    >200908071708170    200908071708170
    >200908071747090    200908071747090
    >200908071821390    200908071821390
    >200908072306020    200908072306020
    >200908072347150    200908072347150
    >200908080004120    200908080004120
    >200908081723210    200908081723210
    >200908081832040    200908081832040
    >200908082022570    200908082022570
    >200908082117170    200908082117170
    >200908091530190    200908091530190
    >200908091755030    200908091755030
    >200908091835570    200908091835570
    >200908091950060    200908091950060
    >200908092010080    200908092010080
    >200908092302200    200908092302200
    >200908092346030    200908092346030
    >200908092359560    200908092359560
    >200908100021130    200908100021130
    >200908100038230    200908100038230
    >200908101437160    200908101437160
    >200908101449140    200908101449140
    >200908101522230    200908101522230
    >200908101739410    200908101739410
    >200908101852220    200908101852220
    >200908101927490    200908101927490
    >200908102215160    200908102215160
    >200908102346580    200908102346580
    >200908111507440    200908111507440
    >200908111532470    200908111532470
    >200908111556260    200908111556260
    >200908111625280    200908111625280
    >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/w/w409wo/nav/w-4-09-wo.060
        >time/lat/long style, multi-record, in caps, without tabs
        >temporal-spatial data
        >
        >Input was...
        >/infobank/w/w409WO/samp/w-4-09-WO.onoff.vibratingcore
        >time/lat/long style, multi-record, in caps, without tabs
        >temporal domain
        >Reformatted from Mary McGann's Excel spreadsheet, DR59-DR69.xls, that has these columns:
        >Dive_and_Core, Dive, Core, Date, Time_GMT, Depth_m, Longitude, Latitude, FACS_ID, Length_cm, WaypointName, Comment
        >       1         2         3
        >345678901234567890123456789012345
        >
      Process_Date: 20091016

      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: Pacific Northwest, Oregon to Canadian border: Hydrate Ridge, Barkley Canyon,
  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

    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137
      Denominator_of_Flattening_Ratio: 298.257

  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 W-4-09-WO 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: 0.1

      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://walrus.wr.usgs.gov/infobank/w/w409wo/html/w-4-09-wo.nav.html

    Fees: None


Metadata_Reference_Information:

  Metadata_Date: 20131030

  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: Wed Oct 30 08:53:49 PDT 2013  (chd)