USGS CMG L-13-80-NP Metadata

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DATA COLLECTION OVERVIEW  (use NGDC GEODAS CD to retrieve data)

MCG Data Collection ID ---         L1380NP
Institution Data Collection ID --- L1380NP
NGDC ID ---                        06050043
Funding ---                        (unspecified)
Project, Cruise & Leg ---          Dave Piper
Study region ---                   +38.00000,+33.00000,-145.00000,-122.00000
Chief Scientist(s) ---             Steve Eittreim
Name of vessel ---                 Lee (surface ship)
Date field data collection started --- 11/18/80     LV REDWOOD CITY
Date field data collection ended ---   12/11/80     AR REDWOOD CITY
Parameters surveyed ---
   Bathymetry:                     surveyed, contained in data file
   Magnetics:                      surveyed, contained in data file
   Gravity:                        surveyed, contained in data file
   High-resolution seismics:       (unspecified)
   Deep penetration seismics:      (unspecified)
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)
Date of data input to NGDC ---     06/12/87
Contributing institution ---       USGS Branch of Pacific Marine Geology
Country ---                        United States

Navigation instrumentation ---     SATNAV, LORAN-C, DOPPLER SONAR
Position determination method ---  PRIM-SATNAV, SEC-INTEGRATED NAV

Bathymetry instrumentation ---            12KHZ NARROW 1 SEC, 3.5KHZ WIDE 1 SEC
Additional forms of bathymetric data ---  RECORDER ROLLS
General rate of bathymetry in file ---    4.4 minutes
General collection rate of bathymetry --- 20/SECONDS
Assumed sound velocity ---                1463.0 m/sec
Bathymetric datum code ---                No correction applied (sea level)
Bathmetry interpolation scheme ---        (unspecified)

Magnetics instrumentation ---            PROTON PRECESSION - GEOMETRICS G-801
Additional forms of magnetics data ---   ANALOG RECORDS
General rate of magnetics in file ---    72.9 minutes
General collection rate of magnetics --- 4 seconds
Magnetic sensor tow distance ---         213 meters
Magnetic sensor depth ---                (unspecified)
Two sensor horizontal separation ---     (unspecified)
Residual magnetics reference field ---   IGRF-75
Method of applying residual field ---    LINEAR INTERP. BETWEEN NAV POINTS

Gravity instrumentation ---            L&R S-53
Additional forms of gravity data ---   ANALOG RECORDS
General rate of gravity in file ---    1.0 minutes
General collection rate of gravity --- 15 seconds
Theoretical gravity formula ---        International 1930
Reference system ---                   System IGSN 71
Corrections applied ---                DRIFT CORRECTIONS
Starting land tie ---                  (unspecified)
Ending land tie   ---                  968851.4   REDWOOD CITY

Seismic instrumentation --- SINGLE CHANNEL AIR GUN
Formats of seismic data --- (unspecified)

Eittreim, Stephen L., Piper, David Z., Chezar, Henry, Jones, David R., and 
Kaneps, Ansis, 1984,
Observations on Cretaceous abyssal hills in the Northeast Pacific: Marine 
Geology, v. 56,
no. 1-4, p. 41-64.