Survey Identifier: DSDP87GC
Format Acronym: MGD77
Data Center File Number: 15050087
Parameters Surveyed Code: 55155
File Creation Date (yyyymmdd): 19830701
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): KAGAMI H.,KARIG D.
Project: DEEPSEA DRILL.LG87 <NSF OCE-24472>
Survey Departure Date (yyyymmdd): 19820625
Port of Departure: YOKOHAMA,JAPAN
Survey Arrival Date (yyyymmdd): 19820804
Port of Arrival: HAKODATE,JAPAN
Navigation Instrumentation: SATNAV,MANUAL ENTRY GYRO AND SPD CHANGES
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 3.5-12KHZ/EDO 550A RECORDERS/WIDE BEAM
Additional Forms of Bathymetric Data: ANAL.RECORDS,CARDS,35MMFILM
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS,35MMFILM
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO 550 REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: +41
Bottommost Latitude: +31
Leftmost Longitude: +133
Rightmost Longitude: +145
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 80
Reference Field: IGRF 1980
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 10025
Min/Max Data Record:
Date: 1982 06 25
Latitude: +31.65560
Longitude: +133.77981
Bathymetry, 2- Way Traveltime: 013200
Bathymetry, Corrected Depth: 990.0
Magnetics Total Field, 1st Sensor: 440970
Magnetics Residual Field: -03240
Min/Max Data Record:
Date: 1982 08 04
Latitude: +40.46650
Longitude: +144.12260
Bathymetry, 2- Way Traveltime: 094550
Bathymetry, Corrected Depth: 7199.0
Magnetics Total Field, 1st Sensor: 474950
Magnetics Residual Field: +02980