Survey Identifier: 86000211
Format Acronym: MGD77
Data Center File Number: 67010157
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): 19860113
Survey Arrival Date (yyyymmdd): 19860128
Geodetic Datum/Position: SATELITE ESITME
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: -17
Bottommost Latitude: -27
Leftmost Longitude: -176
Rightmost Longitude: -149
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: 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: 22509
Min/Max Data Record:
Date: 1986 01 13
Latitude: -26.25964
Longitude: -175.85619
Bathymetry, 2- Way Traveltime: 008197
Bathymetry, Corrected Depth: 621.0
Magnetics Total Field, 1st Sensor: 369270
Magnetics Residual Field: -06870
Observed Gravity: 9784905
Free-Air Anomaly: -3766
Min/Max Data Record:
Date: 1986 01 28
Latitude: -17.54169
Longitude: -149.49030
Bathymetry, 2- Way Traveltime: 135573
Bathymetry, Corrected Depth: 10506.0
Magnetics Total Field, 1st Sensor: 475760
Magnetics Residual Field: +10300
Observed Gravity: 9792158
Free-Air Anomaly: +1927