Survey Identifier: V1713
Format Acronym: MGD77
Data Center File Number: 01030013
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 13
Survey Departure Date (yyyymmdd): 19610719
Port of Departure: DAKAR, SENGAL
Survey Arrival Date (yyyymmdd): 19610805
Port of Arrival: HALIFAX, NOVA SCOTIA
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 GSS2-14
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: +45
Bottommost Latitude: +14
Leftmost Longitude: -064
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: 3913
Min/Max Data Record:
Date: 1961 07 19
Latitude: +14.63330
Longitude: -63.36670
Bathymetry, 2- Way Traveltime: 000550
Bathymetry, Corrected Depth: 41.0
Magnetics Total Field, 1st Sensor: 330060
Magnetics Residual Field: -07150
Free-Air Anomaly: -0661
Min/Max Data Record:
Date: 1961 08 06
Latitude: +44.37500
Longitude: -17.48330
Bathymetry, 2- Way Traveltime: 081525
Bathymetry, Corrected Depth: 6200.0
Magnetics Total Field, 1st Sensor: 556050
Magnetics Residual Field: +05940
Free-Air Anomaly: +0665