Survey Identifier: 80001511
Format Acronym: MGD77
Data Center File Number: 67010087
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): J.FRANCHETEAU
Project: SEARISE - CH110
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19800510
Port of Departure: MAZATLAN
Survey Arrival Date (yyyymmdd): 19800608
Port of Arrival: HAO
Navigation Instrumentation: SAT MAGNAVOX
Geodetic Datum/Position: DEAD RECKONING BASED ON SAT FIXES
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: +24
Bottommost Latitude: -18
Leftmost Longitude: -141
Rightmost Longitude: -101
General Digitizing Rate of Bathymetry: 037
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 037
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: 10419
Min/Max Data Record:
Date: 1980 05 10
Latitude: -17.80355
Longitude: -140.30392
Bathymetry, 2- Way Traveltime: 011649
Bathymetry, Corrected Depth: 871.0
Magnetics Total Field, 1st Sensor: 300460
Magnetics Residual Field: -07290
Min/Max Data Record:
Date: 1980 06 08
Latitude: +23.41480
Longitude: -101.57813
Bathymetry, 2- Way Traveltime: 060628
Bathymetry, Corrected Depth: 4558.0
Magnetics Total Field, 1st Sensor: 449980
Magnetics Residual Field: +04810