Survey Identifier: DSDP27GC


Format Acronym: MGD77
Data Center File Number: 15050025
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): HIERTZLER J.,VEEVERS J.
Project: DEEPSEA DRILL.LG 27 <NSF>
Survey Departure Date (yyyymmdd): 19721111
Port of Departure: PERTH,AUSTRALIA
Survey Arrival Date (yyyymmdd): 19721208
Port of Arrival: FREMANTLE,AUSTRALIA
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: PUNCHED CARDS
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: -10
Bottommost Latitude: -32
Leftmost Longitude: +108
Rightmost Longitude: +124
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
Additional Documentation: *MAG* ORIGINAL RECORDINGS LOST- NO MICROFILM.
Number of Data Records: 4513

Min/Max Data Record:
Date: 1972 11 02
Latitude: -31.56250
Longitude: +108.40030
Bathymetry, 2- Way Traveltime: 002374
Bathymetry, Corrected Depth: 178.0
Magnetics Total Field, 1st Sensor: 457000
Magnetics Residual Field: -06200

Min/Max Data Record:
Date: 1972 12 08
Latitude: -10.79160
Longitude: +123.87790
Bathymetry, 2- Way Traveltime: 076000
Bathymetry, Corrected Depth: 5744.0
Magnetics Total Field, 1st Sensor: 584800
Magnetics Residual Field: +05550