Survey Identifier: C1313


Format Acronym: MGD77
Data Center File Number: 01010088
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 13, LEG 13
Survey Departure Date (yyyymmdd): 19701003
Port of Departure: MOSSAMEDES, ANGOLA
Survey Arrival Date (yyyymmdd): 19701104
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: -14
Bottommost Latitude: -38
Leftmost Longitude: -009
Rightmost Longitude: +020
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: 11131

Min/Max Data Record:
Date: 1970 10 03
Latitude: -37.55110
Longitude: -8.98860
Bathymetry, 2- Way Traveltime: 001150
Bathymetry, Corrected Depth: 86.0
Magnetics Total Field, 1st Sensor: 273600
Magnetics Residual Field: -06990
Free-Air Anomaly: -0670

Min/Max Data Record:
Date: 1970 11 04
Latitude: -14.97500
Longitude: +19.28650
Bathymetry, 2- Way Traveltime: 076050
Bathymetry, Corrected Depth: 5754.0
Magnetics Total Field, 1st Sensor: 325490
Magnetics Residual Field: +08060
Free-Air Anomaly: +1856