Survey Identifier: 79003912
Format Acronym: MGD77
Data Center File Number: 67010082
Parameters Surveyed Code: 55000
File Creation Date (yyyymmdd): 19911119
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): HENRI BOUGAULT
Project: MAPCO - CH98
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19791020
Port of Departure: ACORES
Survey Arrival Date (yyyymmdd): 19791114
Port of Arrival: TOULON
Navigation Instrumentation: SAT I.T.T.
Geodetic Datum/Position: DEAD RECKONING
Bathymetry Instrumentation: SEA-BEAM VERTICAL BEAM
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: PROTON PRECESSION MAG
Additional Forms of Magnetics Data: ANALOG RECORDS
Topmost Latitude of Survey: +43
Bottommost Latitude: +24
Leftmost Longitude: -047
Rightmost Longitude: +006
General Digitizing Rate of Bathymetry: 012
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 011
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 00100
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: 33452
Min/Max Data Record:
Date: 1979 10 20
Latitude: +24.43519
Longitude: -46.45383
Bathymetry, 2- Way Traveltime: 001560
Bathymetry, Corrected Depth: 117.0
Magnetics Total Field, 1st Sensor: 401000
Magnetics Residual Field: -09840
Min/Max Data Record:
Date: 1979 11 14
Latitude: +42.90633
Longitude: +5.63122
Bathymetry, 2- Way Traveltime: 072945
Bathymetry, Corrected Depth: 5531.0
Magnetics Total Field, 1st Sensor: 561700
Magnetics Residual Field: +87520