Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

Skip navigational links
Loading
Activities: by ID   by Platform   by Year   by Region   by Participant   by Organization   by Project/Theme   with Incomplete IDs   Disclaimer  
Activity First Letter: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   0   1   2   3   4   5   6   7   8   9  
Virtual Globes: Atlas  (GE)    Samples  (GE)    Moorings  (GE)    Illuminate Oceans  (GE)    Earthquakes  (GE)    Get GE    InfoBank examples    State Waters    Chronology  (GE)    Gravity Base Stations  (GE)
Identification_Information:

  Citation:
    Citation_Information:
      Originator: U.S. Geological Survey (USGS) , Coastal and Marine Geology Program (CMGP) 
      Publication_Date: 20131029
      Title:
        Data of field activity D-1-96-NC in Gorda Ridge from
        07/08/1996 to 08/07/1996
      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/d-1-96-nc.fmeta.xml
      Online_Linkage: http://walrus.wr.usgs.gov/infobank/d/d196nc/html/d-1-96-nc.meta.html

  Description:
    Abstract:
      United States Geological Survey, Menlo Park,
      California,National Oceanic and Atmospheric Administration.
      Chief Scientists: Kim Klitgord, Bob Embley, Rob Zierenberg.
      Data (sidescansonar, airgun, gravitycore) of field activity
      D-1-96-NC in Gorda Ridge from 07/08/1996 to 08/07/1996,
      http://walrus.wr.usgs.gov/infobank/d/d196nc/html/d-1-96-nc.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

      airgun

      gravitycore

      Notes -

      Leased SSS



      from Western Region Marine and Coastal Surveys Bulletin, July 26,

      1996...



      Good eating (and results) on the Disco

      Jane reid sends news from

      National Oceanic and Atmospheric Administration (NOAA)'s

      

      research vessel Discoverer (aka Disco), where

      she, Kim Klitgord (co-chief scientist), and about half a dozen other USGS'ers

      are cooperating with NOAA in a three-week cruise off the pacific northwest. They

      are collecting sidescan-sonar and seismic-reflection data in three areas:  (1)

      the coaxial segment of the Juan de Fuca Ridge, where a volcanic eruption

      occurred in 1993; (2) the northern part of the Gorda Ridge, where a volcanic

      eruption occurred in april of this year; and (3) Escanaba Trough (southern Gorda

      Ridge), where hydrothermal vents and a thick blanket of sediment have produced

      large sulfide deposits analogous to deposits on land.. here is the report Jane

      sent last week:



      "After some initial problems (non-sinking transponders, sticky winch, and overly

      hot sidescan system) we are now getting great sidescan and sub-bottom profiles

      over NOAA's floc area of the coaxial segment of the Juan de Fuca Ridge. The

      transponder net is well calibrated and the winch is working to fly the towfish

      at altitudes of about 160 meters above the bottom. The data looks

      wonderful: fault scarps and fissures and lava structures from recent flows.

      sidescan images are coming in clear and sharp. Acoustic navigation is

      intermittent, but Stuart Sides and Miguel Velasco from Flagstaff have kept up

      with the processing and we expect to have a completed mosaic in the next week or

      so. After a couple of short deployments and recoveries on the southern part of

      the Juan de Fuca, it's off to Escanaba Trough for 8 days of side-scan work

      and seismic lines. The weather has been swell, though we expect it to get

      sweller (a low is headed our way). The food is excellent. expect some waddling

      when we return. What we all need are fewer Haagen Daz bars and more Altoids. "

      for more information about vents in the northeast Pacific (and links to pages

      about other neat stuff) check out this NOAA page on the world wide web:

      http://www.pmel.noaa.gov/vents/



      from Western Region Marine and Coastal Surveys Bulletin, August 2,

      1996...



      More news from the Discoverer

      The Escanaba part of the survey is collecting great data right now. We have two

      excellent NW and two NE trending profiles across the mounds region and are about

      to start the third. Great records on the sidescan, 4.5khz, and airgun systems.

      the quality is definitely above expectations. Poor fish nav but good ship nav.

      25-30 knot winds have delayed us a bit due to difficulty holding courses going

      with the wind, so we have had to make some adjustments to acquire the desired

      data. Still the prospects for 100% data of the trough, but unless there are

      major problems we will have not trouble acquiring all of the primary data in the

      mounds vicinity. Seismic data indicate that we may be able to develop a relative

      fault age distribution. Rob Zierenberg is thrilled with sidescan images over the

      mounds with 1000m swaths at 100m above seafloor. Sulfide mound zones are clearly

      visible. NW trending faults coming into the mounds are "very" linear. could not

      ask for better images. Very easy to correlate faults  and other structures in

      the airgun data with features on the deep towed sidescan and 4.5khz data.

      sidescan processing is nearly complete for the NOAA Juan de Fuca co-axial region

      study and Stuart and Miguel are already working on the Escanaba data. Larry,

      Mike, and Tom have a superb seismic reflection profile record coming in. Initial

      processing of seismic reflection data is already underway on Tommy's Silicon

      Graphics machine, for both airgun and 4.5khz data sets. Swath bathymetric

      processing for escanaba is about to start but should be easy by comparison with

      the Juan de Fuca data set. Operations are smooth and the whole team is putting

      in a great effort. The Williamson team is providing great support.:Kim



      Discoverer's good voyage

      The Disco is coming into port today, ending the last oceanographic cruise of her

      30-year career. If all goes as predicted, she "will be escorted in by a fire

      boat, spraying water as we approach the locks into lake union. We're stopping in

      Everett to pick up 80 or 100 crew dependents so they can transit the rest of the

      way in. We should arrive at the dock on Lake Union about 1:30 p.m. on Friday.

      whee!" Jane Reid



      Here's a recap on the cruise from Kim Klitgord.

      The NOAA-USGS cruise on the NOAA's Discoverer, with Robert Embley (NOAA) and Kim

      Klitgord (USGS) as co-chief scientists, has successfully completed its sidescan

      sonar studies of the co-axial segment of the Juan de Fuca Ridge (NOAA vents

      program) and the Escanaba Trough on the southern Gorda Ridge. The AMS-60

      sidescan sonar system and 4.5 khz sub-bottom profiler system leased and operated

      by Williamson and associates were used for both surveys. At Escanaba Trough,

      nearly 350 km of near-bottom sidescan sonar and 4.5 khz sub-bottom penetration

      data and surface towed airgun seismic reflection data were acquired on a grid of

      18 lines over the Nesca hydrothermal system within the axial valley of Escanaba

      Trough. A tight grid of 1 to 2 km spacing swaths in both the NNW and NE

      directions have provided two complete sidescan mosaics with different image

      angles for interpreting the surficial geologic character of the 18 km x 25 km

      region centered on the hydrothermal mounds that are the drill target for the

      ODP leg 169 that starts later this month with Rob Zierenberg (USGS) as co-

      chief scientist. Stuart Sides and Miguel Velasco (Flagstaff) have already

      completed the sidescan sonar processing and Rob is hopping from the Discoverer

      to the Joides Resolution with a set of fantastic mosaics. The 4.5 khz seismic

      system routinely imaged over 50 meters below the seafloor and provided a superb

      stratigraphic record of the interlinked volcanism, deformation and turbidite

      deposition within Escanaba Trough. "z" and Stephahie Ross have been constantly

      identifying features on these records that they have found on previous dives,

      camera runs, and sampling sorties. Stephanie, Kaye Kinoshita and Jane Reid

      (USGS), Bill Chadwick and Julia Getsiv (NOAA), and Jim Fowler (Arizona State)

      have kept us tightly navigated, ruled the watches and made sure that all we

      found would not be lost. The 160 cu.in. single channel airgun data provided an

      excellent image of the entire sediment column and basement structures for the

      entire area, at times exceeding 1000 m of penetration. Larry Kooker, Mike Boyle,

      Tom O'Brien and Hal Williams were jumping, keeping the airgun and winch systems

      fine tuned. Se Won Chang and Hun Soo Choi have become the moguls of

      swath-bathymetry mapping, keeping Tommy O's Silicon Graphics workstation

      filled with bits and bytes, occasionally bringing it to its knees. The Escanaba

      Trough survey revealed a narrow  4-km wide zone of neotectonic activity with the

      most active faulting and volcanic activity. The recent basaltic flows provided

      bright sidescan targets enabling us to readily map their areal extent and to

      identify their likely eruption source: a fissured volcanic hill 2 km east of the

      hydrothermal central hill of Nesca. The hydrothermal fields on the central hill

      and southwest hill were clearly identifiable. Growth faults in the 4.5 khz data

      provide a fine data base for establishing the faulting history within the

      neotectonic zone to complement the volcanic history.

      Publications -

      Ross, Stephanie L., and Zierenberg, Robert A., 2009, Sidescan Sonar Imagery of

      the Escanaba Trough, Southern Gorda Ridge, Offshore Northern California:

      Scientific Investigations Map 2907, scale 1:25,000. URL:

      http://pubs.usgs.gov/sim/2907/


      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: 19960708
        Ending_Date: 19960807

    Currentness_Reference: ground condition

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -127.85317
      East_Bounding_Coordinate: -127.36833
      North_Bounding_Coordinate: 41.17267
      South_Bounding_Coordinate: 40.39450

  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: CA
      Place_Keyword: California-Oregon-Washington EEZ Quad 22
      Place_Keyword: Gorda Ridge
      Place_Keyword: North Pacific Ocean
      Place_Keyword: Northern California
      Place_Keyword: Northern Pacific Ocean
      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 


  Data_Set_Credit:
    Kim Klitgord (Chief Scientist, USGS Western Region);
    Bob Embley (Chief Scientist, NOAA);
    Bill Chadwick (Navigation and Geologist, NOAA);
    Julia Getsiv (Navigation, NOAA);
    Rob Zierenberg (Chief Scientist, USGS Western Region);
    Stephanie Ross (Side Scan Sonar Data, USGS Western Region);
    Jane Reid (Seismic Reflection Data, USGS Western Region);
    Kaye Kinoshita (Ctd Studies And Navigation, USGS Western Region);
    Stuart Sides (Sidescan Sonar Processing, USGS Western Region);
    Miguel Velasco (Sidescan Sonar Processing, USGS Western Region);
    Larry Kooker (Electrical Technician, USGS Western Region);
    Mike Boyle (Electrical Technician, USGS Western Region)

  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:
        Ross, Stephanie L., and Zierenberg, Robert A., 2009, Sidescan Sonar Imagery of
        the Escanaba Trough, Southern Gorda Ridge, Offshore Northern California:
        Scientific Investigations Map 2907, scale 1:25,000. URL:
        http://pubs.usgs.gov/sim/2907/



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 (d-1-96-nc.060 [GPS])
    >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    >199607291529000    199608061440000
    >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
        Unknown
      Process_Date: 20000810

      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: Gorda Ridge
  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 D-1-96-NC 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/d/d196nc/html/d-1-96-nc.nav.html

    Fees: None


Metadata_Reference_Information:

  Metadata_Date: 20131029

  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



      
Skip footer navigational links

Coastal and Marine Science Centers:  Pacific   St. Petersburg   Woods Hole  
InfoBank   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/infobank/d/d196nc/html/d-1-96-nc.fmeta.indent.html
Page Contact Information: InfoBank staff
Page Last Modified: Tue Oct 29 08:21:36 PDT 2013  (chd)