Survey Identifier: 88001511
Format Acronym: MGD77
Data Center File Number: 67010192
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19910827
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19880704
Survey Arrival Date (yyyymmdd): 19880727
Navigation Instrumentation: GPS + LORAN C
Bathymetry Instrumentation: SEABEAM
Topmost Latitude of Survey: +74
Bottommost Latitude: +48
Leftmost Longitude: -008
Rightmost Longitude: +005
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
General Digitizing Rate of Gravity: 010
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYS
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: 32906
Min/Max Data Record:
Date: 1988 07 04
Latitude: +48.27952
Longitude: -7.54571
Bathymetry, 2- Way Traveltime: 003120
Bathymetry, Corrected Depth: 229.0
Magnetics Total Field, 1st Sensor: 505750
Magnetics Residual Field: -12020
Observed Gravity: 9809078
Free-Air Anomaly: -0508
Min/Max Data Record:
Date: 1988 07 27
Latitude: +73.14766
Longitude: +4.54755
Bathymetry, 2- Way Traveltime: 052560
Bathymetry, Corrected Depth: 3889.0
Magnetics Total Field, 1st Sensor: 542150
Magnetics Residual Field: +14360
Observed Gravity: 9828820
Free-Air Anomaly: +1387