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Metadata
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ID
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C-1-94-WF
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Also Known As
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Dive 781
Dive 782
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Abstract
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United States Geological Survey, Menlo Park, California.
Chief Scientists: Jan Morton, Carol Reiss. Data
(underwatertelevision, CTDmeter, bathymetry,
transitsatellite, bottomtransponder, submersible (Turtle)) of
field activity C-1-94-WF in Juan de Fuca Ridge from
08/17/1994 to 08/25/1994
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Organization
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United States Geological Survey, Menlo Park, California
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Project/Theme
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Crustal Deformation Study
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National Plan
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Resources
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Chief Scientist
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Jan Morton
Carol Reiss
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Platform
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Laney Chouest
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Area of Operation
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Juan de Fuca Ridge
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Location map
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Bounding Coordinates
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50.75000
-135.00000 -122.25000
42.00000
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Ports
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leave Coos Bay, OR
arrive Coos Bay, OR
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Dates
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08/17/1994 (JD 229) to 08/25/1994 (JD 237)
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Analog Materials
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list
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Index map
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Crew
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Jan Morton
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Chief Scientist, USGS Western Region
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Carol Reiss
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Chief Scientist, USGS Western Region
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Stephanie Ross
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Unspecified Investigator, USGS Western Region
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Tracy Vallier
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Unspecified Investigator, USGS Western Region
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Equipment Used
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underwatertelevision
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CTDmeter
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bathymetry
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transitsatellite
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bottomtransponder
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submersible (Turtle)
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Purpose
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Measuring sea floor spreading acoustically, using dual frequency smart transponders
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Summary
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Carol Reiss (Co-Chief), Stephanie Ross, and Tracy Vallier returned
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August 26, 1994 from a successful cruise to the southern Juan de Fuca Ridge,
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onboard the DSVSS LANEY CHOUEST, support ship to the DSV Turtle, and ATV (Advanced Tethered Vehicle). The Turtle and ATV are U.S. Navy owned and operated
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vehicles of the Deep Submergence Group One. Considerable planning, great
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weather, and hard work enabled us to successfully reposition several instruments
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that were previously deployed in 1992. A total of four tripods with dual
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frequency transponders were initially deployed across the axis of the spreading
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ridge to determine the rate and tectonic/volcanic relationship of plate
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separation using acoustic instruments. Two DVS Turtle dives and four ATV dives
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accomplished the complex task of repositioning two tripods, recovering a damaged
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transponder, and completing a detailed geologic reconnaisance (inclunding CTD
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casts) between and around the tripods. SeaBeam bathymetric data was collected
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during the transit between the Coos Bay, OR., and the Juan de Fuca Ridge. The
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cruise was funded by NURP (National Underwater Research Proogram) through the
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West Coast National Undersea Research Center, University of Alaska, Fairbanks.
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Future efforts will include annual site visits to retrieve range data from the
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transponders, as well as additional instrument deployments to extend the
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experiment to include older faults and fissures along the Juan de Fuca Ridge.
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Notes
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Data Inventory folder contains: Oceano SI printout (2 stacks), daily
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report 9pgs., ATV Camera and operations logs; 781-94-14 Turtle dive folder
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(communications log, nav plot, printout, and floppy nav); 782-94-15 Turtle dive
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folder (communications log, nav plot, printout, and floppy nav); 94-39-83 ATV
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folder (2 plots, printout and floppy); 94-40-84 ATV folder (1 plot, printout and
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floppy); 94-41-85 ATV folder (3 plots, 2 printouts and floppy); 94-42-86 ATV
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folder combined with 94-41-85 folder; 3.5" PC floppies (2 NS011 travel time data
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& 3 CTD *.hex files); 4" Compac Tapes; 3 SeaBeam bathymetric data; maps; VHS
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tapes (94-39-83 ATV 3 of 3, 94-40-84 ATV 3 of 3, 94-41-85 ATV 5 of 5, 94-42-86
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ATV 2 of 2); Hi 8 tapes (781-94-14 Turtle 5 of 5, 782-94-15 Turtle 6 of 6,
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94-39-83 ATV 3 of 3, 94-40-84 ATV 5 of 5, 94-41-85 ATV 8 of 8, 94-42-86 ATV 2 of
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2, Hand held on deck recording of ship activities 1 of 1).
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Got Help?
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For C-1-94-WF, we would appreciate any information on -- activity type, contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, NGDC Info, owner, project number, publications, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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