Survey Identifier: V2713
Format Acronym: MGD77
Data Center File Number: 01030127
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. WALTER PITMAN
Project: CRUISE 27, LEG 13
Survey Departure Date (yyyymmdd): 19700315
Port of Departure: ABIJAN, IVORY COAST
Survey Arrival Date (yyyymmdd): 19700410
Port of Arrival: ST. VINCENT,CAPE VERDE ISLANDS
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: +17
Bottommost Latitude: -08
Leftmost Longitude: -026
Rightmost Longitude: -001
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: 7936
Min/Max Data Record:
Date: 1970 03 15
Latitude: -7.82170
Longitude: -25.10620
Bathymetry, 2- Way Traveltime: 000575
Bathymetry, Corrected Depth: 43.0
Magnetics Total Field, 1st Sensor: 294140
Magnetics Residual Field: -02770
Free-Air Anomaly: -1079
Min/Max Data Record:
Date: 1970 04 10
Latitude: +16.83330
Longitude: -1.34110
Bathymetry, 2- Way Traveltime: 078100
Bathymetry, Corrected Depth: 5914.0
Magnetics Total Field, 1st Sensor: 342080
Magnetics Residual Field: +05650
Free-Air Anomaly: +2161