Survey Identifier: C1214
Format Acronym: MGD77
Data Center File Number: 01010069
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): G. BRYAN
Project: CRUISE 12, LEG 14
Survey Departure Date (yyyymmdd): 19690202
Port of Departure: BUENOS AIRES, ARGENTINA
Survey Arrival Date (yyyymmdd): 19690303
Port of Arrival: CAPETOWN, SOUTH AFRICA
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: -29
Bottommost Latitude: -48
Leftmost Longitude: -057
Rightmost Longitude: +018
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: 40
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 40
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: 10177
Min/Max Data Record:
Date: 1969 02 02
Latitude: -47.95040
Longitude: -56.21500
Bathymetry, 2- Way Traveltime: 000225
Bathymetry, Corrected Depth: 17.0
Magnetics Total Field, 1st Sensor: 251440
Magnetics Residual Field: -04800
Free-Air Anomaly: -0561
Min/Max Data Record:
Date: 1969 03 03
Latitude: -29.26580
Longitude: +17.92500
Bathymetry, 2- Way Traveltime: 080950
Bathymetry, Corrected Depth: 6105.0
Magnetics Total Field, 1st Sensor: 302790
Magnetics Residual Field: +08870
Free-Air Anomaly: +1161