Survey Identifier: V1712
Format Acronym: MGD77
Data Center File Number: 01030012
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890630
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: U.S.A.
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): M. TALWANI
Project: CRUISE 17, LEG 12
Survey Departure Date (yyyymmdd): 19610626
Port of Departure: BUENOS AIRES, ARGENTINA
Survey Arrival Date (yyyymmdd): 19610718
Port of Arrival: DAKAR, SENGAL
Navigation Instrumentation: SEXTANT
Geodetic Datum/Position: 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 GSS 2-14
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: +15
Bottommost Latitude: -36
Leftmost Longitude: -057
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 - 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 4958
Min/Max Data Record:
Date: 1961 06 27
Latitude: -35.14670
Longitude: -56.21330
Bathymetry, 2- Way Traveltime: 000075
Bathymetry, Corrected Depth: 6.0
Magnetics Total Field, 1st Sensor: 239490
Magnetics Residual Field: -03310
Free-Air Anomaly: -1622
Min/Max Data Record:
Date: 1961 07 18
Latitude: +14.61170
Longitude: -17.43330
Bathymetry, 2- Way Traveltime: 096000
Bathymetry, Corrected Depth: 7324.0
Magnetics Total Field, 1st Sensor: 328040
Magnetics Residual Field: +03650
Free-Air Anomaly: +2401