Survey Identifier: 87004111
Format Acronym: MGD77
Data Center File Number: 67010180
Parameters Surveyed Code: 55000
File Creation Date (yyyymmdd): 19930413
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19871030
Survey Arrival Date (yyyymmdd): 19871114
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Topmost Latitude of Survey: +49
Bottommost Latitude: +14
Leftmost Longitude: -062
Rightmost Longitude: -004
General Digitizing Rate of Bathymetry: 010
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: 21814
Min/Max Data Record:
Date: 1987 10 30
Latitude: +14.35120
Longitude: -61.11715
Bathymetry, 2- Way Traveltime: 002083
Bathymetry, Corrected Depth: 156.0
Magnetics Total Field, 1st Sensor: 358070
Magnetics Residual Field: -10000
Min/Max Data Record:
Date: 1987 11 14
Latitude: +48.36418
Longitude: -4.50166
Bathymetry, 2- Way Traveltime: 075053
Bathymetry, Corrected Depth: 5687.0
Magnetics Total Field, 1st Sensor: 470240
Magnetics Residual Field: +15000