Survey Identifier: C1213
Format Acronym: MGD77
Data Center File Number: 01010068
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): A. LONARDI
Project: CRUISE 12, LEG 13
Survey Departure Date (yyyymmdd): 19681220
Port of Departure: DEL PLATA, ARGENTINA
Survey Arrival Date (yyyymmdd): 19690126
Port of Arrival: BUENOS AIRES, ARGENTINA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/ DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD DOC / 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: ANSCHUTZ ELECTRICTABLE, ASKANIA GSS2-6
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU-IN-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: -32
Bottommost Latitude: -47
Leftmost Longitude: -058
Rightmost Longitude: -023
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 42
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 42
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 12276
Min/Max Data Record:
Date: 1968 12 20
Latitude: -46.07490
Longitude: -57.16330
Bathymetry, 2- Way Traveltime: 000250
Bathymetry, Corrected Depth: 19.0
Magnetics Total Field, 1st Sensor: 239790
Magnetics Residual Field: -03690
Free-Air Anomaly: -0568
Min/Max Data Record:
Date: 1969 01 26
Latitude: -32.52520
Longitude: -23.97600
Bathymetry, 2- Way Traveltime: 077250
Bathymetry, Corrected Depth: 5828.0
Magnetics Total Field, 1st Sensor: 279940
Magnetics Residual Field: +03920
Free-Air Anomaly: +0722