Survey Identifier: 86003411


Format Acronym: MGD77
Data Center File Number: 67010165
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): 19860630
Survey Arrival Date (yyyymmdd): 19860728
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: +20
Bottommost Latitude: -12
Leftmost Longitude: -105
Rightmost Longitude: -077
General Digitizing Rate of Bathymetry: 011
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 012
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: 40154

Min/Max Data Record:
Date: 1986 06 30
Latitude: -11.97705
Longitude: -104.36277
Bathymetry, 2- Way Traveltime: 003136
Bathymetry, Corrected Depth: 237.0
Magnetics Total Field, 1st Sensor: 274220
Magnetics Residual Field: -07240
Observed Gravity: 9778757
Free-Air Anomaly: -2512

Min/Max Data Record:
Date: 1986 07 28
Latitude: +19.06349
Longitude: -77.27114
Bathymetry, 2- Way Traveltime: 083821
Bathymetry, Corrected Depth: 6352.0
Magnetics Total Field, 1st Sensor: 419890
Magnetics Residual Field: +19280
Observed Gravity: 9785956
Free-Air Anomaly: +0447