Survey Identifier: DSDP30GC
Format Acronym: MGD77
Data Center File Number: 15050028
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19791124
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): ANDREWS J.,PACKHAM G.
Project: DEEPSEA DRILL.LG 30 <NSF>
Survey Departure Date (yyyymmdd): 19730424
Port of Departure: WELLINGTON,NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19730612
Port of Arrival: APRA,GUAM
Navigation Instrumentation: SATNAV,MANUAL ENTRY GYRO AND SPD CHANGES
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 12KHZ/GIFFT RECORDER/WIDE(60DEG)BEAM
Additional Forms of Bathymetric Data: ANAL.RECORDS,CARDS,35MMFILM
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS,35MMFILM
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO PSR REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: +14
Bottommost Latitude: -42
Leftmost Longitude: +144
Rightmost Longitude: +179
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN.INTERP.AT 30DEG C/C OR 500MI ALONG TRACK
Number of Data Records: 6224
Min/Max Data Record:
Date: 1973 04 24
Latitude: -41.67330
Longitude: +144.82610
Bathymetry, 2- Way Traveltime: 000900
Bathymetry, Corrected Depth: 68.0
Magnetics Total Field, 1st Sensor: 350550
Magnetics Residual Field: -05450
Min/Max Data Record:
Date: 1973 06 12
Latitude: +13.12510
Longitude: +178.65330
Bathymetry, 2- Way Traveltime: 099000
Bathymetry, Corrected Depth: 7553.0
Magnetics Total Field, 1st Sensor: 576200
Magnetics Residual Field: +08150