Survey Identifier: V2907


Format Acronym: MGD77
Data Center File Number: 01030154
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): DR. PHILIP RABINOWITZ
Project: CRUISE 29, LEG 07
Funding: GA27281, GA35463
Survey Departure Date (yyyymmdd): 19720521
Port of Departure: LUANDA, ANGOLA
Survey Arrival Date (yyyymmdd): 19720612
Port of Arrival: ABIJAN, IVORY COAST
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: +07
Bottommost Latitude: -09
Leftmost Longitude: -005
Rightmost Longitude: +014
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: 6790

Min/Max Data Record:
Date: 1972 05 21
Latitude: -8.71500
Longitude: -4.12590
Bathymetry, 2- Way Traveltime: 000800
Bathymetry, Corrected Depth: 60.0
Magnetics Total Field, 1st Sensor: 308430
Magnetics Residual Field: -03200
Free-Air Anomaly: -0708

Min/Max Data Record:
Date: 1972 06 12
Latitude: +6.12570
Longitude: +13.25670
Bathymetry, 2- Way Traveltime: 067725
Bathymetry, Corrected Depth: 5108.0
Magnetics Total Field, 1st Sensor: 327120
Magnetics Residual Field: +05910
Free-Air Anomaly: +1579