Survey Identifier: 80003311
Format Acronym: MGD77
Data Center File Number: 67010089
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): VINCENT RENARD
Project: GUAPA - CH113
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19800802
Port of Departure: GUAYAQUIL
Survey Arrival Date (yyyymmdd): 19800805
Port of Arrival: PANAMA
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: +09
Bottommost Latitude: -03
Leftmost Longitude: -082
Rightmost Longitude: -079
General Digitizing Rate of Bathymetry: 010
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 010
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: 3883
Min/Max Data Record:
Date: 1980 08 02
Latitude: -2.64770
Longitude: -81.72557
Bathymetry, 2- Way Traveltime: 001459
Bathymetry, Corrected Depth: 109.0
Magnetics Total Field, 1st Sensor: 307850
Magnetics Residual Field: -04210
Min/Max Data Record:
Date: 1980 08 05
Latitude: +8.13946
Longitude: -79.62540
Bathymetry, 2- Way Traveltime: 058193
Bathymetry, Corrected Depth: 4367.0
Magnetics Total Field, 1st Sensor: 363430
Magnetics Residual Field: +04510