Survey Identifier: 86001211
Format Acronym: MGD77
Data Center File Number: 67010160
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19930405
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19860403
Survey Arrival Date (yyyymmdd): 19860409
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: -16
Bottommost Latitude: -22
Leftmost Longitude: -150
Rightmost Longitude: -138
General Digitizing Rate of Bathymetry: 012
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 014
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 00100
General Digitizing Rate of Gravity: 011
Theoretical Gravity Formula Code: 4
Theoretical Gravity Formula: IAG SYSTEM 1980
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: 8894
Min/Max Data Record:
Date: 1986 04 03
Latitude: -21.83200
Longitude: -149.62565
Bathymetry, 2- Way Traveltime: 005451
Bathymetry, Corrected Depth: 416.0
Magnetics Total Field, 1st Sensor: 353410
Magnetics Residual Field: -06970
Observed Gravity: 9783438
Free-Air Anomaly: -1051
Min/Max Data Record:
Date: 1986 04 09
Latitude: -16.07937
Longitude: -138.97208
Bathymetry, 2- Way Traveltime: 061568
Bathymetry, Corrected Depth: 4630.0
Magnetics Total Field, 1st Sensor: 371650
Magnetics Residual Field: +02460
Observed Gravity: 9788213
Free-Air Anomaly: +1654