Survey Identifier: SOTW03WT
Format Acronym: MGD77
Data Center File Number: 15040043
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19800602
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): WISNER R.L.
Project: SOUTHTOW LEG 3
Survey Departure Date (yyyymmdd): 19720401
Port of Departure: VALPARAISO,CHILE
Survey Arrival Date (yyyymmdd): 19720421
Port of Arrival: ANTOFAGASTA,CHILE
Navigation Instrumentation: SATNAV,AUTOLOG GYRO + EMLOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 3.5-12KHZ/GIFFT RECORDERS/WIDE BEAM
Additional Forms of Bathymetric Data: ANAL.RECORDS,CARDS,35MMFILM
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO PSR REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: -23
Bottommost Latitude: -38
Leftmost Longitude: -075
Rightmost Longitude: -070
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN.INTERP.AT 30DEG C/C OR 500MI ALONG TRACK
Number of Data Records: 3357
Min/Max Data Record:
Date: 1972 04 01
Latitude: -37.01840
Longitude: -74.23160
Bathymetry, 2- Way Traveltime: 000524
Bathymetry, Corrected Depth: 39.0
Magnetics Total Field, 1st Sensor: 255100
Magnetics Residual Field: -04350
Min/Max Data Record:
Date: 1972 04 20
Latitude: -23.07330
Longitude: -70.54160
Bathymetry, 2- Way Traveltime: 099674
Bathymetry, Corrected Depth: 7595.0
Magnetics Total Field, 1st Sensor: 279400
Magnetics Residual Field: +06350