Survey Identifier: V3205
Format Acronym: MGD77
Data Center File Number: 01030186
Parameters Surveyed Code: 55533
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): ROBERT EMBLY
Project: CRUISE 32 LEG 05
Survey Departure Date (yyyymmdd): 19750119
Port of Departure: LAS PLAMAS, GRAN CANARIE
Survey Arrival Date (yyyymmdd): 19750216
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 PROTON-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: +31
Bottommost Latitude: +14
Leftmost Longitude: -026
Rightmost Longitude: -015
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: IGRF1965
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: 7670
Min/Max Data Record:
Date: 1975 01 19
Latitude: +14.60400
Longitude: -25.50670
Bathymetry, 2- Way Traveltime: 000325
Bathymetry, Corrected Depth: 24.0
Magnetics Total Field, 1st Sensor: 327150
Magnetics Residual Field: -02320
Free-Air Anomaly: -0690
Min/Max Data Record:
Date: 1975 02 16
Latitude: +30.09110
Longitude: -15.32030
Bathymetry, 2- Way Traveltime: 070075
Bathymetry, Corrected Depth: 5305.0
Magnetics Total Field, 1st Sensor: 398630
Magnetics Residual Field: +04120
Free-Air Anomaly: +1067