Survey Identifier: 73003121
Format Acronym: MGD77
Data Center File Number: 67010048
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19920312
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Project: GEOBRESIL 2
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19731204
Survey Arrival Date (yyyymmdd): 19731221
Topmost Latitude of Survey: +48
Bottommost Latitude: -24
Leftmost Longitude: -043
Rightmost Longitude: -005
General Digitizing Rate of Bathymetry: 011
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 011
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 00100
General Digitizing Rate of Gravity: 011
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYS 80
Corrections Applied: DRIFT CORRECTION DONE
Additional Documentation: OBSERVED PARAMETERS : POSITION LINEARLY INTERPOLATED IN FUNCTION OF TIME, SYNCHRONIZED PARAMETERS : VALUES INTERPOLATED LINEARLY IN FUNCTION OF TIME, EOTVOS CORRECTION : CAP + SPEED DETERMINED LINEARLY FROM THE NAVIGATION POINTS, DGRF : HARMONIC COEFFICIENTS COMPUTED ONCE (LINEARLY) AT THE DATE OF THE FIRST, OBSERVED DATA FOR EACH CRUISE, ECHO SOUNDING CORRECTION TABLES - 3RD ED. D.J.T. CARTER, NP 139 HYFROGRAPHIC DEPARTMENT - MINISTRY OF DEFENSE - UK 1980
Number of Data Records: 19272
Min/Max Data Record:
Date: 1973 12 04
Latitude: -23.01390
Longitude: -42.71763
Bathymetry, 2- Way Traveltime: 000268
Bathymetry, Corrected Depth: 20.0
Magnetics Total Field, 1st Sensor: 244800
Magnetics Residual Field: -04790
Observed Gravity: 9779705
Free-Air Anomaly: -1256
Min/Max Data Record:
Date: 1973 12 21
Latitude: +47.77408
Longitude: -5.37928
Bathymetry, 2- Way Traveltime: 071884
Bathymetry, Corrected Depth: 5435.0
Magnetics Total Field, 1st Sensor: 467360
Magnetics Residual Field: +06060
Observed Gravity: 9806564
Free-Air Anomaly: +2369