Survey Identifier: C1311
Format Acronym: MGD77
Data Center File Number: 01010086
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): R. MARKL
Project: CRUISE 13, LEG 11
Survey Departure Date (yyyymmdd): 19700731
Port of Departure: PORT OF SPAIN, TRINIDAD
Survey Arrival Date (yyyymmdd): 19700831
Port of Arrival: ABIDJAN, IVORY COAST
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: +13
Bottommost Latitude: +00
Leftmost Longitude: -062
Rightmost Longitude: -004
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: 47
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 47
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: 9218
Min/Max Data Record:
Date: 1970 07 31
Latitude: +0.06460
Longitude: -61.76500
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 299740
Magnetics Residual Field: -03310
Free-Air Anomaly: -1174
Min/Max Data Record:
Date: 1970 08 31
Latitude: +12.19010
Longitude: -4.09830
Bathymetry, 2- Way Traveltime: 072025
Bathymetry, Corrected Depth: 5442.0
Magnetics Total Field, 1st Sensor: 377880
Magnetics Residual Field: +03060
Free-Air Anomaly: +1586