Survey Identifier: V3204
Format Acronym: MGD77
Data Center File Number: 01030185
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890703
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): RABINOWITZ PHILLIP D
Project: CRUISE 32 LEG 04
Funding: NSF GA27281
Survey Departure Date (yyyymmdd): 19741222
Port of Departure: MADERIA, MADERIA
Survey Arrival Date (yyyymmdd): 19750114
Port of Arrival: LAS PALMAS, GRAN CANARIE
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 25CU-IW-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO,2-CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +34
Bottommost Latitude: +27
Leftmost Longitude: -022
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 TWO PTS
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP, GA27281, GA3463, GX2867, GA17122
Number of Data Records: 7456
Min/Max Data Record:
Date: 1974 12 22
Latitude: +27.95450
Longitude: -21.24370
Bathymetry, 2- Way Traveltime: 000450
Bathymetry, Corrected Depth: 34.0
Magnetics Total Field, 1st Sensor: 385170
Magnetics Residual Field: -03030
Free-Air Anomaly: -0883
Min/Max Data Record:
Date: 1975 01 15
Latitude: +33.61280
Longitude: -9.32920
Bathymetry, 2- Way Traveltime: 065250
Bathymetry, Corrected Depth: 4936.0
Magnetics Total Field, 1st Sensor: 415930
Magnetics Residual Field: +07280
Free-Air Anomaly: +1821