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! Converted to time format with year at start.
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DATA COLLECTION OVERVIEW (use NGDC GEODAS CD to retrieve data)
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MCG Data Collection ID --- L481NC
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Institution Data Collection ID --- L481NC
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NGDC ID --- 06050053
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Funding --- (unspecified)
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Project, Cruise & Leg --- (unspecified)
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Study region --- +40.00000,+37.00000,-125.00000,-122.00000
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Chief Scientist(s) --- Dave McCulloch
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Name of vessel --- Lee (surface ship)
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Date field data collection started --- 05/12/81 LV REDWOOD CITY CA
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Date field data collection ended --- 05/18/81 AR EUREKA CA
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Parameters surveyed ---
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Bathymetry: (unspecified)
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Magnetics: surveyed, contained in data file
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Gravity: surveyed, contained in data file
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High-resolution seismics: (unspecified)
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Deep penetration seismics: (unspecified)
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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 --- 06/17/87
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Contributing institution --- USGS Branch of Pacific Marine Geology
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Country --- United States
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Navigation instrumentation --- SATNAV, MINIRANGER
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Position determination method --- PRIM-INTEGRATED NAV, SEC-MINIRANGER
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Bathymetry instrumentation --- 12KHZ NARROW 1 SEC, 3.5 KHZ WIDE 1 SEC
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Additional forms of bathymetric data --- RECORDER ROLLS
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General rate of bathymetry in file --- (unspecified)
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General collection rate of bathymetry --- 20/SECONDS
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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 --- (unspecified)
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Magnetics instrumentation --- PROTON PRECESSION MAG-GEOMETRICS G-801
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Additional forms of magnetics data --- ANALOG RECORDS
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General rate of magnetics in file --- 1.0 minutes
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General collection rate of magnetics --- 4 seconds
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Magnetic sensor tow distance --- 213 meters
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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-75
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Method of applying residual field --- LINEAR INTERP. BETWEEN NAV POINTS
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Gravity instrumentation --- L&R S-53
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Additional forms of gravity data --- ANALOG RECORDS
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General rate of gravity in file --- 1.0 minutes
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General collection rate of gravity --- 15 seconds
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Theoretical gravity formula --- International 1930
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Reference system --- System IGSN 71
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Corrections applied --- DRIFT CORRECTIONS
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Starting land tie --- 968845.0 REDWOOD CITY, CA.
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Ending land tie --- 968845.1 EUREKA, CA.
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Seismic instrumentation --- UNIBOOM, SINGLE CHANNEL
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Formats of seismic data --- (unspecified)
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