Survey Identifier: V2708
Format Acronym: MGD77
Data Center File Number: 01030122
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. PAUL FOX
Project: CRUISE 27, LEG 08
Survey Departure Date (yyyymmdd): 19691121
Port of Departure: LISBON, PORTUGAL
Survey Arrival Date (yyyymmdd): 19691202
Port of Arrival: FUNCHAL, MADEIRA
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 25.IN.AIRGUN, EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2-CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +39
Bottommost Latitude: +32
Leftmost Longitude: -018
Rightmost Longitude: -009
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: 2791
Min/Max Data Record:
Date: 1969 11 21
Latitude: +32.51330
Longitude: -17.76850
Bathymetry, 2- Way Traveltime: 002500
Bathymetry, Corrected Depth: 188.0
Magnetics Total Field, 1st Sensor: 407990
Magnetics Residual Field: -02050
Free-Air Anomaly: -0974
Min/Max Data Record:
Date: 1969 12 02
Latitude: +38.63330
Longitude: -9.64330
Bathymetry, 2- Way Traveltime: 067750
Bathymetry, Corrected Depth: 5134.0
Magnetics Total Field, 1st Sensor: 437300
Magnetics Residual Field: +04360
Free-Air Anomaly: +1537