Survey Identifier: DSDP28GC
Format Acronym: MGD77
Data Center File Number: 15050026
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): HAYES D.E.,FRAKES L.
Project: DEEPSEA DRILL.LG 28 <NSF>
Survey Departure Date (yyyymmdd): 19721220
Port of Departure: FREMANTLE,AUSTRALIA
Survey Arrival Date (yyyymmdd): 19730226
Port of Arrival: CHRISTCHURCH,NEW ZEALAND
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: -31
Bottommost Latitude: -78
Leftmost Longitude: +104
Rightmost Longitude: -174
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: 9974
Min/Max Data Record:
Date: 1972 12 20
Latitude: -77.47160
Longitude: -179.98630
Bathymetry, 2- Way Traveltime: 000624
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 591700
Magnetics Residual Field: -07800
Min/Max Data Record:
Date: 1973 02 26
Latitude: -31.98830
Longitude: +180.00000
Bathymetry, 2- Way Traveltime: 079750
Bathymetry, Corrected Depth: 6032.0
Magnetics Total Field, 1st Sensor: 683500
Magnetics Residual Field: +09300