Survey Identifier: 73002911
Format Acronym: MGD77
Data Center File Number: 67010044
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19920312
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Project: GEOBRESIL 1
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19731003
Survey Arrival Date (yyyymmdd): 19731017
Topmost Latitude of Survey: +38
Bottommost Latitude: -24
Leftmost Longitude: -043
Rightmost Longitude: -025
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
General Digitizing Rate of Gravity: 011
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYS 80
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: 20639
Min/Max Data Record:
Date: 1973 10 03
Latitude: -23.04330
Longitude: -42.68434
Bathymetry, 2- Way Traveltime: 000391
Bathymetry, Corrected Depth: 29.0
Magnetics Total Field, 1st Sensor: 238810
Magnetics Residual Field: -08990
Observed Gravity: 9781163
Free-Air Anomaly: -0451
Min/Max Data Record:
Date: 1973 10 17
Latitude: +37.63153
Longitude: -25.67069
Bathymetry, 2- Way Traveltime: 076200
Bathymetry, Corrected Depth: 5771.0
Magnetics Total Field, 1st Sensor: 445540
Magnetics Residual Field: +07530
Observed Gravity: 9798230
Free-Air Anomaly: +0669