Survey Identifier: 87001411
Format Acronym: MGD77
Data Center File Number: 67010175
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19930408
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DANIEL
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19870412
Port of Departure: PORT-VILA
Survey Arrival Date (yyyymmdd): 19870429
Port of Arrival: HONIARA
Navigation Instrumentation: TRANSIT + GPS DEGRADE
Geodetic Datum/Position: SATELLITES
Bathymetry Instrumentation: VERTICAL BEAM FROM GIC SEABEAM
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: GEOMETRICS G801
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: BODENSEEWERK KSS30
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: 24 TRACES FLEXICHOC LABO SERCEL 338
Topmost Latitude of Survey: -09
Bottommost Latitude: -23
Leftmost Longitude: +159
Rightmost Longitude: +169
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: 4
Theoretical Gravity Formula: IAG SYSTEM 1980
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: 23528
Min/Max Data Record:
Date: 1987 04 12
Latitude: -22.40203
Longitude: +159.94673
Bathymetry, 2- Way Traveltime: 002099
Bathymetry, Corrected Depth: 157.0
Magnetics Total Field, 1st Sensor: 410510
Magnetics Residual Field: -11310
Observed Gravity: 9779354
Free-Air Anomaly: -3364
Min/Max Data Record:
Date: 1987 04 29
Latitude: -9.38557
Longitude: +168.46458
Bathymetry, 2- Way Traveltime: 115064
Bathymetry, Corrected Depth: 8848.0
Magnetics Total Field, 1st Sensor: 482270
Magnetics Residual Field: +12650
Observed Gravity: 9789080
Free-Air Anomaly: +1387