Survey Identifier: V2605
Format Acronym: MGD77
Data Center File Number: 01030109
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. V. RENARD
Project: CRUISE 26, LEG 05
Survey Departure Date (yyyymmdd): 19681129
Port of Departure: RIO DE JANEIRO, BRAZIL
Survey Arrival Date (yyyymmdd): 19681229
Port of Arrival: RIO DE JANEIRO, BRAZIL
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 GSS2-33
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: -23
Bottommost Latitude: -32
Leftmost Longitude: -044
Rightmost Longitude: -015
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
Magnetic Sensor Tow Distance: 2
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: 17037
Min/Max Data Record:
Date: 1968 11 29
Latitude: -31.35180
Longitude: -43.08830
Bathymetry, 2- Way Traveltime: 000625
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 238620
Magnetics Residual Field: -01580
Free-Air Anomaly: -0535
Min/Max Data Record:
Date: 1968 12 29
Latitude: -23.06330
Longitude: -15.26960
Bathymetry, 2- Way Traveltime: 080900
Bathymetry, Corrected Depth: 6127.0
Magnetics Total Field, 1st Sensor: 271940
Magnetics Residual Field: +04330
Free-Air Anomaly: +0623