Survey Identifier: DSDP57GC
Format Acronym: MGD77
Data Center File Number: 15050056
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19800110
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): VON HUENE R.,NORIYUKI N.
Project: DEEPSEA DRILL.LG 57 <NSF>
Survey Departure Date (yyyymmdd): 19771016
Port of Departure: TOKYO,JAPAN
Survey Arrival Date (yyyymmdd): 19771204
Port of Arrival: YOKOHAMA,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
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO 550 REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: +42
Bottommost Latitude: +35
Leftmost Longitude: +141
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: 04
Reference Field: IGRF 1975
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 2496
Min/Max Data Record:
Date: 1977 10 16
Latitude: +35.91660
Longitude: +141.10000
Bathymetry, 2- Way Traveltime: 003975
Bathymetry, Corrected Depth: 296.0
Magnetics Total Field, 1st Sensor: 455380
Magnetics Residual Field: -01550
Min/Max Data Record:
Date: 1977 11 20
Latitude: +41.51500
Longitude: +144.13330
Bathymetry, 2- Way Traveltime: 071600
Bathymetry, Corrected Depth: 5377.0
Magnetics Total Field, 1st Sensor: 487900
Magnetics Residual Field: +01330