Survey Identifier: C1206
Format Acronym: MGD77
Data Center File Number: 01010061
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): W. LUDWIG
Project: CRUISE 12, LEG 6
Survey Departure Date (yyyymmdd): 19680603
Port of Departure: TOKYO, JAPAN
Survey Arrival Date (yyyymmdd): 19680626
Port of Arrival: TOKYO, JAPAN
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/ DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD DOC / 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: ANSCHUTZ ELECTRICTABLE, ASKANIA GSS2-6
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU-IN-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +36
Bottommost Latitude: +29
Leftmost Longitude: +126
Rightmost Longitude: +140
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 56
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 56
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 5663
Min/Max Data Record:
Date: 1968 06 03
Latitude: +29.05920
Longitude: +126.85970
Bathymetry, 2- Way Traveltime: 000475
Bathymetry, Corrected Depth: 36.0
Magnetics Total Field, 1st Sensor: 430050
Magnetics Residual Field: -09730
Free-Air Anomaly: -1155
Min/Max Data Record:
Date: 1968 06 26
Latitude: +35.11000
Longitude: +139.78160
Bathymetry, 2- Way Traveltime: 075125
Bathymetry, Corrected Depth: 5676.0
Magnetics Total Field, 1st Sensor: 468250
Magnetics Residual Field: +14940
Free-Air Anomaly: +1466