Survey Identifier: MD72
Format Acronym: MGD77
Data Center File Number: 67060005
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19941015
Source Institution: UNIVERSITE FRANCAISE PACIFIQUE - TAHITI
Country: FRANCE
Platform Name: MARION DUFRESNE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): A.BONNEVILLE
Project: MASCAFLUX - MD, 72
Funding: TAAF+CNRS+NSF
Survey Departure Date (yyyymmdd): 19920511
Port of Departure: LE PORT, LA REUNION
Survey Arrival Date (yyyymmdd): 19920604
Port of Arrival: MAHE, SEYCHELLES
Navigation Instrumentation: SAT
Bathymetry Instrumentation: 12/18 KHZ E/S
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: .
Additional Forms of Magnetics Data: ANALOG RECORDS
Seismic Instrumentation: TAAF TWG S80-WATERGUN, TWO CHANNELS ,
Formats of Seismic Data: DIGITAL, ANALOG RECORDS
Topmost Latitude of Survey: -16
Bottommost Latitude: -21
Leftmost Longitude: +053
Rightmost Longitude: +060
General Digitizing Rate of Bathymetry: 050
General Digitizing Rate of Magnetics: 010
Reference Field Code: 88
Reference Field: IGRF-90
Additional Documentation: THIS IS MAINLY AN HEAT FLOW SURVEY: 96 HEAT FLOW DATA WITH BOTH THERMAL, CONDUCTIVITY AND THERMAL GRADIENT HAVE BEEN RECORDED ALONG TWO PROFILES, PERPENDICULAR TO THE MASCARENE RIDGE. Bonneville et al., EOS,73,43,p.542,1992. NGDC'S QUALITY CONTROL PROGRAM FOUND 1799 CALCULATED SPEEDS OVER 20 KNOTS AND, THOSE RECORDS WERE FLAGGED IN POSITION 120 OF THE MGD77 DATA RECORDS. NGDC HAS DIGITAL AND ANALOG HEAT FLOW DATA FOR THIS CRUISE, NGDC GEOLOGY, REFERENCE NUMBER 67065005.
Number of Data Records: 10422
Min/Max Data Record:
Date: 1992 05 11
Latitude: -20.90622
Longitude: +53.76980
Bathymetry, 2- Way Traveltime: 000363
Bathymetry, Corrected Depth: 27.0
Magnetics Total Field, 1st Sensor: 206559
Magnetics Residual Field: -51288
Min/Max Data Record:
Date: 1992 05 30
Latitude: -16.12520
Longitude: +59.47570
Bathymetry, 2- Way Traveltime: 064628
Bathymetry, Corrected Depth: 4870.0
Magnetics Total Field, 1st Sensor: 392455
Magnetics Residual Field: +29157