Survey Identifier: V2205
Format Acronym: MGD77
Data Center File Number: 01030082
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. M. EWING
Project: CRUISE 22, LEG 5
Survey Departure Date (yyyymmdd): 19660416
Port of Departure: CAPETOWN, SOUTH AFRICA
Survey Arrival Date (yyyymmdd): 19660425
Port of Arrival: CAPETOWN, SOUTH AFRICA
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 GSS2-12
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: -33
Bottommost Latitude: -42
Leftmost Longitude: +017
Rightmost Longitude: +027
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: 00
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: 1365
Min/Max Data Record:
Date: 1966 04 16
Latitude: -41.48390
Longitude: +17.88620
Bathymetry, 2- Way Traveltime: 000550
Bathymetry, Corrected Depth: 41.0
Magnetics Total Field, 1st Sensor: 292390
Magnetics Residual Field: -05340
Free-Air Anomaly: -0433
Min/Max Data Record:
Date: 1966 04 25
Latitude: -33.90000
Longitude: +26.96610
Bathymetry, 2- Way Traveltime: 070000
Bathymetry, Corrected Depth: 5277.0
Magnetics Total Field, 1st Sensor: 312960
Magnetics Residual Field: +16130
Free-Air Anomaly: +1172