Survey Identifier: V2603
Format Acronym: MGD77
Data Center File Number: 01030107
Parameters Surveyed Code: 55033
File Creation Date (yyyymmdd): 19890703
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: U.S.A.
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): THOMAS AITKEN
Project: CRUISE 26, LEG 03
Survey Departure Date (yyyymmdd): 19680926
Port of Departure: ST. GEORGE, BERMUDA
Survey Arrival Date (yyyymmdd): 19681021
Port of Arrival: DAKAR, SENEGAL
Navigation Instrumentation: SATELLITE/SEXTANT
Geodetic Datum/Position: SATELLITE / DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD. DOC./ 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTRON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: GRAF-ASKANIA GSS2-12
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: +33
Bottommost Latitude: +14
Leftmost Longitude: -065
Rightmost Longitude: -017
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: 060
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAV. PTS.
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL1930
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: 12407
Min/Max Data Record:
Date: 1968 09 26
Latitude: +14.51790
Longitude: -64.58330
Bathymetry, 2- Way Traveltime: 000950
Bathymetry, Corrected Depth: 71.0
Magnetics Total Field, 1st Sensor: 327370
Magnetics Residual Field: -05920
Min/Max Data Record:
Date: 1968 10 21
Latitude: +32.38330
Longitude: -17.45000
Bathymetry, 2- Way Traveltime: 084325
Bathymetry, Corrected Depth: 6416.0
Magnetics Total Field, 1st Sensor: 509270
Magnetics Residual Field: +03990