Survey Identifier: 86005411
Format Acronym: MGD77
Data Center File Number: 67010169
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19930406
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19861129
Survey Arrival Date (yyyymmdd): 19861228
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: +20
Bottommost Latitude: +07
Leftmost Longitude: -105
Rightmost Longitude: -079
General Digitizing Rate of Bathymetry: 013
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 021
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: 42023
Min/Max Data Record:
Date: 1986 11 29
Latitude: +7.09438
Longitude: -104.56807
Bathymetry, 2- Way Traveltime: 005379
Bathymetry, Corrected Depth: 405.0
Magnetics Total Field, 1st Sensor: 370350
Magnetics Residual Field: -02850
Observed Gravity: 9780601
Free-Air Anomaly: -1073
Min/Max Data Record:
Date: 1986 12 28
Latitude: +19.06639
Longitude: -79.48446
Bathymetry, 2- Way Traveltime: 062701
Bathymetry, Corrected Depth: 4713.0
Magnetics Total Field, 1st Sensor: 381100
Magnetics Residual Field: +03240
Observed Gravity: 9786022
Free-Air Anomaly: +1091