Survey Identifier: 86002311
Format Acronym: MGD77
Data Center File Number: 67010163
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): 19860416
Survey Arrival Date (yyyymmdd): 19860517
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: +33
Bottommost Latitude: -19
Leftmost Longitude: -147
Rightmost Longitude: -117
General Digitizing Rate of Bathymetry: 013
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 015
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 00100
General Digitizing Rate of Gravity: 012
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: 44511
Min/Max Data Record:
Date: 1986 04 16
Latitude: -18.07895
Longitude: -146.75365
Bathymetry, 2- Way Traveltime: 004819
Bathymetry, Corrected Depth: 367.0
Magnetics Total Field, 1st Sensor: 317540
Magnetics Residual Field: -06570
Observed Gravity: 9780141
Free-Air Anomaly: -1162
Min/Max Data Record:
Date: 1986 05 17
Latitude: +32.71783
Longitude: -117.15673
Bathymetry, 2- Way Traveltime: 070003
Bathymetry, Corrected Depth: 5279.0
Magnetics Total Field, 1st Sensor: 478960
Magnetics Residual Field: +17690
Observed Gravity: 9795544
Free-Air Anomaly: +2435