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USGS CMG L-4-81-NC Metadata

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ID L-4-81-NC
Abstract Chief Scientist: Dave McCulloch. Geophysical data (dopplersonar, integratednavigation, miniranger, transitsatellite, 3dot5khz, 12khz, magnetics, gravity, uniboom, sparker, RhoRho) of field activity L-4-81-NC in Off San Mateo County, Northern California from 05/12/1981 to 05/13/1981
Chief Scientist Dave McCulloch
Activity Type Geophysical
Platform Samuel Phillips Lee
Area of Operation Off San Mateo County, Northern California, Northern California
Bounding Coordinates
-124.53240    -122.18615
Ports leave Redwood City, CA
arrive Eureka, CA
Dates 05/12/1981 (JD 132) to 05/13/1981 (JD 133)
Analog Materials list
Carolyn Degnan Navigator
Dan Hurlbert Watchstander
Dave Hogg Electronics Technician
Dave McCulloch Chief Scientist
Dennis Mann Watchstander
Dave Melendrez Chief Mate
Doug Rearic Watchstander
Greg Lewis Watchstander
Jim Saltzgaber Chief Engineer
Kaye Kinoshita Navigator
Kevin O'Toole Mechanical Technician
Lisa Gossett Navigator
Roy Fields Electronics Technician
Russ Crane Watchstander
Terry Ruff Ship Captain
Equipment Used
NGDC Overview
! Converted to time format with year at start.

MCG Data Collection ID ---         L481NC
Institution Data Collection ID --- L481NC
NGDC ID ---                        06050053
Funding ---                        (unspecified)
Project, Cruise & Leg ---          (unspecified)
Study region ---                   +40.00000,+37.00000,-125.00000,-122.00000
Chief Scientist(s) ---             Dave McCulloch
Name of vessel ---                 Lee (surface ship)
Date field data collection started --- 05/12/81     LV REDWOOD CITY CA
Date field data collection ended ---   05/18/81     AR EUREKA CA
Parameters surveyed ---
   Bathymetry:                     (unspecified)
   Magnetics:                      surveyed, contained in data file
   Gravity:                        surveyed, contained in data file
   High-resolution seismics:       (unspecified)
   Deep penetration seismics:      (unspecified)
Format --- 

Date of data input to NGDC ---     06/17/87
Contributing institution ---       USGS Branch of Pacific Marine Geology
Country ---                        United States

Navigation instrumentation ---     SATNAV, MINIRANGER
Position determination method ---  PRIM-INTEGRATED NAV, SEC-MINIRANGER

Bathymetry instrumentation ---            12KHZ NARROW 1 SEC, 3.5 KHZ WIDE 1 SEC
Additional forms of bathymetric data ---  RECORDER ROLLS
General rate of bathymetry in file ---    (unspecified)
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 MAG-GEOMETRICS G-801
Additional forms of magnetics data ---   ANALOG RECORDS
General rate of magnetics in file ---    1.0 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 ---                  968845.0   REDWOOD CITY, CA.
Ending land tie   ---                  968845.1   EUREKA, CA.

Seismic instrumentation --- UNIBOOM, SINGLE CHANNEL
Formats of seismic data --- (unspecified)
Got Help? For L-4-81-NC, 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, project, project number, publications, purpose, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
Type Webpage KMZ Arc         Metadata        
Bathymetry data      
Gravity data 052.grav
Magnetics data      
Metadata data     txt  data  FAQ  xml
Navigation data nav    
Seismic data      
Times   052.times    

L-4-81-NC location map of where navigation 

equipment operated
L-4-81-NC location map of where navigation 

equipment operated

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