Survey Identifier: 85002911
Format Acronym: MGD77
Data Center File Number: 67010150
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19880114
Source Institution: IFREMER
Country: FRANCE
Platform Name: JEAN CHARCOT
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): LEVY
Project: BIOCAL
Funding: IFREMER
Survey Departure Date (yyyymmdd): 19850809
Port of Departure: NUOMEA
Survey Arrival Date (yyyymmdd): 19850909
Port of Arrival: NUOMEA
Navigation Instrumentation: MX1107R, GPS TI 4100
Geodetic Datum/Position: SATELITE ESTIME
Bathymetry Instrumentation: ED012KH,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: RAYTHEON 3.5K
Topmost Latitude of Survey: -20
Bottommost Latitude: -25
Leftmost Longitude: +166
Rightmost Longitude: +169
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVALS AND PEAK AND TROUGHS
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 01
Magnetic Sensor Tow Distance: 0080
Sensor Depth: 00100
Reference Field Code: 04
Reference Field: IGFR80
Method of Applying Residual Field: INTERPOLATION BETWEEN NAVIGATION DATA
General Digitizing Rate of Gravity: 013
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL 30
Reference System Code: 3
Reference System: IGSN71 NOT SPECI
Corrections Applied: F. DRIFT PORT TO PORT APPLIED
Number of Data Records: 26133
Min/Max Data Record:
Date: 1985 08 09
Latitude: -24.94224
Longitude: +166.30061
Bathymetry, Corrected Depth: 125.0
Magnetics Total Field, 1st Sensor: 469240
Magnetics Residual Field: -08432
Observed Gravity: 9786340
Free-Air Anomaly: -0996
Min/Max Data Record:
Date: 1985 09 09
Latitude: -20.28090
Longitude: +168.36954
Bathymetry, Corrected Depth: 3721.0
Magnetics Total Field, 1st Sensor: 496350
Magnetics Residual Field: +10735
Observed Gravity: 9790849
Free-Air Anomaly: +1847