Survey Identifier: DSDP48GC


Format Acronym: MGD77
Data Center File Number: 15050047
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19791129
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): MONTADERT L.,ROBERTS D.G.
Project: DEEPSEA DRILL.LG 48 <NSF>
Survey Departure Date (yyyymmdd): 19760522
Port of Departure: BREST,FRANCE
Survey Arrival Date (yyyymmdd): 19760713
Port of Arrival: ABERDEEN,SCOTLAND
Navigation Instrumentation: SATNAV,MANUAL ENTRY GYRO AND SPD CHANGES
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 12KHZ/EDO 550A RECORDER/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: +59
Bottommost Latitude: +47
Leftmost Longitude: -024
Rightmost Longitude: -007
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: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 4606

Min/Max Data Record:
Date: 1976 05 22
Latitude: +47.33440
Longitude: -23.45890
Bathymetry, 2- Way Traveltime: 001120
Bathymetry, Corrected Depth: 84.0
Magnetics Total Field, 1st Sensor: 467740
Magnetics Residual Field: -14280

Min/Max Data Record:
Date: 1976 07 11
Latitude: +58.14100
Longitude: -7.54680
Bathymetry, 2- Way Traveltime: 059204
Bathymetry, Corrected Depth: 4464.0
Magnetics Total Field, 1st Sensor: 514000
Magnetics Residual Field: +14670