Survey Identifier: DSDP72GC
Format Acronym: MGD77
Data Center File Number: 15050071
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19811007
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BARKER P.,JOHNSON D.,CARLSON R.
Project: DEEPSEA DRILL.LG 72 <NSF>
Survey Departure Date (yyyymmdd): 19800226
Port of Departure: SANTOS,BRAZIL
Survey Arrival Date (yyyymmdd): 19800407
Port of Arrival: SANTOS,BRAZIL
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: -24
Bottommost Latitude: -31
Leftmost Longitude: -045
Rightmost Longitude: -035
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: 2869
Min/Max Data Record:
Date: 1980 02 27
Latitude: -30.94660
Longitude: -44.57399
Bathymetry, 2- Way Traveltime: 002175
Bathymetry, Corrected Depth: 163.0
Magnetics Total Field, 1st Sensor: 235930
Magnetics Residual Field: -03900
Min/Max Data Record:
Date: 1980 04 07
Latitude: -24.56290
Longitude: -35.19339
Bathymetry, 2- Way Traveltime: 064375
Bathymetry, Corrected Depth: 4849.0
Magnetics Total Field, 1st Sensor: 247990
Magnetics Residual Field: +05910