Survey Identifier: V2606
Format Acronym: MGD77
Data Center File Number: 01030110
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 26, LEG 06
Survey Departure Date (yyyymmdd): 19680102
Port of Departure: RIO DE JANEIRO, BRAZIL
Survey Arrival Date (yyyymmdd): 19680131
Port of Arrival: RECIFE, 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: -08
Bottommost Latitude: -31
Leftmost Longitude: -044
Rightmost Longitude: -022
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: 17612
Min/Max Data Record:
Date: 1969 01 02
Latitude: -30.69480
Longitude: -43.14830
Bathymetry, 2- Way Traveltime: 000025
Bathymetry, Corrected Depth: 2.0
Magnetics Total Field, 1st Sensor: 239010
Magnetics Residual Field: -08280
Free-Air Anomaly: -0663
Min/Max Data Record:
Date: 1969 01 31
Latitude: -8.05830
Longitude: -22.92830
Bathymetry, 2- Way Traveltime: 076450
Bathymetry, Corrected Depth: 5780.0
Magnetics Total Field, 1st Sensor: 264830
Magnetics Residual Field: +08120
Free-Air Anomaly: +1329