Survey Identifier: 89001111
Format Acronym: MGD77
Data Center File Number: 67010185
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19911018
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19890702
Survey Arrival Date (yyyymmdd): 19890727
Topmost Latitude of Survey: +29
Bottommost Latitude: +18
Leftmost Longitude: -032
Rightmost Longitude: -015
General Digitizing Rate of Bathymetry: 012
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 018
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 00100
General Digitizing Rate of Gravity: 011
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYS
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: 34504
Min/Max Data Record:
Date: 1989 07 02
Latitude: +18.31291
Longitude: -31.34028
Bathymetry, 2- Way Traveltime: 009692
Bathymetry, Corrected Depth: 729.0
Magnetics Total Field, 1st Sensor: 340750
Magnetics Residual Field: -00840
Observed Gravity: 9784568
Free-Air Anomaly: -1050
Min/Max Data Record:
Date: 1989 07 27
Latitude: +28.12446
Longitude: -15.33660
Bathymetry, 2- Way Traveltime: 073196
Bathymetry, Corrected Depth: 5548.0
Magnetics Total Field, 1st Sensor: 373100
Magnetics Residual Field: +03190
Observed Gravity: 9793562
Free-Air Anomaly: +1894