Survey Identifier: 89000311
Format Acronym: MGD77
Data Center File Number: 67010201
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19911015
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): SIBUET
Project: NORESTLANTE LEG-1
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19890301
Survey Arrival Date (yyyymmdd): 19890329
Navigation Instrumentation: GPS+TRANSIT
Bathymetry Instrumentation: SEA BEAM VERTICAL BEAM
Topmost Latitude of Survey: +51
Bottommost Latitude: +37
Leftmost Longitude: -026
Rightmost Longitude: -004
General Digitizing Rate of Bathymetry: 012
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 013
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: 37999
Min/Max Data Record:
Date: 1989 03 01
Latitude: +37.61061
Longitude: -25.66594
Bathymetry, 2- Way Traveltime: 005045
Bathymetry, Corrected Depth: 379.0
Magnetics Total Field, 1st Sensor: 433970
Magnetics Residual Field: -03360
Observed Gravity: 9800059
Free-Air Anomaly: -0840
Min/Max Data Record:
Date: 1989 03 29
Latitude: +50.02115
Longitude: -4.48133
Bathymetry, 2- Way Traveltime: 071927
Bathymetry, Corrected Depth: 5454.0
Magnetics Total Field, 1st Sensor: 476810
Magnetics Residual Field: +07040
Observed Gravity: 9811076
Free-Air Anomaly: +1494