Survey Identifier: DSDP40GC
Format Acronym: MGD77
Data Center File Number: 15050038
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19791125
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BOLLI H.M.,RYAN W.B.F.
Project: DEEPSEA DRILL.LG 40 <NSF>
Survey Departure Date (yyyymmdd): 19741220
Port of Departure: CAPE TOWN,SOUTH AFRICA
Survey Arrival Date (yyyymmdd): 19750215
Port of Arrival: ABIDJAN,IVORY COAST
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: +06
Bottommost Latitude: -36
Leftmost Longitude: -004
Rightmost Longitude: +019
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.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 7376
Min/Max Data Record:
Date: 1974 12 20
Latitude: -35.84990
Longitude: -3.85240
Bathymetry, 2- Way Traveltime: 002022
Bathymetry, Corrected Depth: 152.0
Magnetics Total Field, 1st Sensor: 282490
Magnetics Residual Field: -07390
Min/Max Data Record:
Date: 1975 02 15
Latitude: +5.00630
Longitude: +18.19100
Bathymetry, 2- Way Traveltime: 067446
Bathymetry, Corrected Depth: 5087.0
Magnetics Total Field, 1st Sensor: 325890
Magnetics Residual Field: +06960