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Metadata
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ID
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M-1-74-NP
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Also Known As
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CCTWO1MV
COCOTOW_1A
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Abstract
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Chief Scientists: J. Mudie, Bill Normark. Geophysical data
(transitsatellite, gyro, 3dot5khz, 12khz, magnetics,
sidescansonar, 4khz, 20khz) of field activity M-1-74-NP in
East Pacific Rise, Northern Pacific from 08/26/1974 to
09/20/1974
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Project/Theme
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Hydrothermal System of the East Pacific Rise
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Chief Scientist
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J. Mudie
Bill Normark
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Activity Type
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Geophysical
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Platform
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Melville
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Area of Operation
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East Pacific Rise, Northern Pacific
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Location map
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Bounding Coordinates
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32.67890
-117.49830 -100.03490
8.04520
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Dates
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08/26/1974 (JD 238) to 09/20/1974 (JD 263)
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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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J. Mudie
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Chief Scientist
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Bill Normark
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Chief Scientist, USGS Western Region
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Equipment Used
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transitsatellite
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gyro
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3dot5khz
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12khz
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magnetics
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sidescansonar
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4khz
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20khz
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NGDC Overview
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! Converted to time format with year at start.
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!
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DATA COLLECTION OVERVIEW (use NGDC GEODAS CD to retrieve data)
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MCG Data Collection ID --- M174NP
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Institution Data Collection ID --- CCTW01MV
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NGDC ID --- 15020025
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Funding --- (unspecified)
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Project, Cruise & Leg --- COCOTOW LEG 1
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Study region --- +33.00000, +8.00000,-118.00000,-100.00000
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Chief Scientist(s) --- MUDIE J., NORMARK W.
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Name of vessel --- R/V MELVILLE (surface ship)
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Date field data collection started --- 08/26/74 SAN DIEGO
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Date field data collection ended --- 09/20/74 ACAPULCO
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Parameters surveyed ---
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Bathymetry: surveyed, contained in data file
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Magnetics: surveyed, contained in data file
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Gravity: not surveyed
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High-resolution seismics: surveyed, but not contained in data file
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Deep penetration seismics: not surveyed
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Format --- (I1,A8,F5.2,4I2,F5.3,F8.5,F9.5,I1,F6.4,F6.1,I2,i1,3F6.1,I1,F5.1,F6.0,F7.1,F6.1,F5.1,A8,4I1)
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Date of data input to NGDC --- 10/29/79
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Contributing institution --- SCRIPPS INSTITUTION OF OCEANOGRAPHY
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Country --- USA
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Navigation instrumentation --- SATNAV,AUTOLOG GYRO + EMLOG
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Position determination method --- LINEAR INTERP.BETWEEN ADJACENT FIXES
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Bathymetry instrumentation --- 3.5-12KHZ/GIFFT RECORDERS/WIDE BEAM
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Additional forms of bathymetric data --- ANAL.RECORDS,CARDS,35MMFILM(3.5KHZ)
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General rate of bathymetry in file --- 5.0 minutes
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General collection rate of bathymetry --- 1SECONDSWEEP
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Assumed sound velocity --- 1463.0 m/sec
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Bathymetric datum code --- No correction applied (sea level)
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Bathmetry interpolation scheme --- 5 MINUTE INTERVAL
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Magnetics instrumentation --- VARIAN MFD PROTON PRECESSION MOD 4970
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Additional forms of magnetics data --- ANAL.RECORDS,CARDS
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General rate of magnetics in file --- 5.0 minutes
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General collection rate of magnetics --- 6 seconds
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Magnetic sensor tow distance --- (unspecified)
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Magnetic sensor depth --- (unspecified)
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Two sensor horizontal separation --- (unspecified)
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Residual magnetics reference field --- IGRF-65
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Method of applying residual field --- LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
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Seismic instrumentation --- (unspecified)
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Formats of seismic data --- (unspecified)
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Publications
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Normark, W.R., 1976, Delineation of the main extrusion zone of the East Pacific Rise at
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lat 21 degrees N: Boulder, CO, Geology, v. 4, no. 11, p. 681-685.
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Crane, K., and Normark, W.R., 1975, Ridge crest structure vs. hydrothermal activity (East
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Pacific Rise 21 degrees N): Eos, Transactions, American Geophysical Union, v. 56, no. 12,
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Fall annual meeting, p. 1064-1065.
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Normark, W.R., 1975, Photographic study of the zone of crustal accretion of the East
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Pacific Rise crest at the mouth of the Gulf of California: Geological Society of America
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Abstracts with Programs, v. 7, no. 3, p. 358.
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Crane, K., and Normark, W.R., 1977, Hydrothermal activity and crestal structure
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of the East Pacific Rise at 21 degrees N: Journal of Geophysical Research, v. 82, no. 33,
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p. 5336-5348.
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Normark, W.R., Alpha, T.R., Hess, G.R., Lichtman, G.S., and Gutmacher, C.E., 1978, Map
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showing the crest of the East Pacific Rise near the mouth of the Gulf of California:
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U.S. Geological Survey Open-File Report 78-350, 1 sheet.
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Normark, W.R., and Hess, G.R., 1978, Deep-tow studies of the East Pacific Rise, Pacific
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Ocean basin: U.S. Geological Survey Professional Paper 1100, p. 158.
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Normark, W.R., and Hess, G.R., 1979, Deep-tow studies of the East Pacific Rise off
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Mexico: U.S. Geological Survey Professional Paper 1150, p. 157.
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Lichtman, G.S., Normark, W.R., Spiess, F.N., and Hess, G.R., 1979, Detailed morphology and
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photogeology of the East Pacific Rise near lat. 21 degrees N: Geological Society of America
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Abstracts with Programs, v. 11, no. 7, p. 466.
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Hess, G.R., Lawhead, B., Lichtman, G.S., MacDonald, K.C., Miller, S.M., Normark, W.R., and
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Spiess, F.N., 1980, Fine-scale bathymetry used for submersible studies of the East Pacific
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Rise: U.S. Geological Survey Open-File Report 80-542, 2 sheets.
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Normark, William R., 1980, Definition of the plate boundary along the East Pacific Rise off
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Mexico: Marine Geodesy, v. 4, no. 1, p. 29-41.
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Normark, W.R., and Bischoff, J.L., 1980, Hydrothermal activity and massive sulfides on
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the East Pacific Rise: U.S. Geological Survey Professional Paper 1175, p. 163.
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Ballard, Robert D., Francheteau, Jean, Juteau, Tierre, Rangan, Claude, and Normark, W.R.,
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1981, East Pacific Rise at 21 degrees N; the volcanic, tectonic, and hydrothermal processes
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of the central axis: Earth and Planetary Science Letters, v. 55, no. 1, p. 1-10.
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Wilde, P., Chase, T.E., Holmes, M.L., Normark, W.R., and Thomas, J.A., 1977, Oceanographic
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data off Washington, 46 degrees to 49 degrees north including the Nitinat deep sea fan:
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Lawrence Berkeley Laboratory, Energy and Environment Division, no. 223, 1 sheet.
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Normark, William R., 1990, Return to Ranger submarine slide, Baja California, Mexico: Geo-Marine
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Letters, v. 10, no. 2, p. 81-91.
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Got Help?
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For M-1-74-NP, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, notes, organization, owner, ports, project number, purpose, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
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