Survey Identifier: PLUM01WT
Format Acronym: MGD77
Data Center File Number: 15040198
Parameters Surveyed Code: 55311
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): C. COX
Project: PLUME LEG 1
Funding: NSF/OCE87-02835/ONR
Survey Departure Date (yyyymmdd): 19900105
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19900116
Port of Arrival: GALAPAGOS ISLANDS, ECUADOR
Navigation Instrumentation: SATNAV/GPS,AUTO LOG GYRO+2D DOPPLER SPD
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERTICAL BEAM (2&2/3 DEG)
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL MAG TAPE
Seismic Instrumentation: NONE COLLECTED
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: +33
Bottommost Latitude: -01
Leftmost Longitude: -118
Rightmost Longitude: -090
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE AVERAGES EXTRACTED FROM SEABEAM VERTICAL BEAMS
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-1985
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: EOTVOS AND METER DRIFT
Departure Base Station Gravity: 9795355
Departure Base Station Description: SIO MAR FAC PIER SAN DIEGO
Arrival Base Station Gravity: 9781620
Arrival Base Station Description: DOD 2242-5 RECIFE BRAZIL
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, GRAVITY COLLECTED BUT NOT PROCESSED, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT.
Number of Data Records: 13025
Min/Max Data Record:
Date: 1990 01 05
Latitude: -0.82272
Longitude: -117.22500
Bathymetry, 2- Way Traveltime: 000480
Bathymetry, Corrected Depth: 36.0
Magnetics Total Field, 1st Sensor: 314070
Magnetics Residual Field: -10284
Min/Max Data Record:
Date: 1990 01 16
Latitude: +32.65650
Longitude: -90.29533
Bathymetry, 2- Way Traveltime: 074867
Bathymetry, Corrected Depth: 5653.0
Magnetics Total Field, 1st Sensor: 424170
Magnetics Residual Field: +07784