Survey Identifier: DSDP65GC
Format Acronym: MGD77
Data Center File Number: 15050064
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19800703
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): LEWIS B.T.R.,ROBINSON P.
Project: DEEPSEA DRILL.LG 65 <NSF>
Survey Departure Date (yyyymmdd): 19790120
Port of Departure: SAN PEDRO,CALIFORNIA
Survey Arrival Date (yyyymmdd): 19790313
Port of Arrival: MAZATLAN,MEXICO
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: +34
Bottommost Latitude: +22
Leftmost Longitude: -119
Rightmost Longitude: -106
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: 3690
Min/Max Data Record:
Date: 1979 01 21
Latitude: +22.64910
Longitude: -118.05830
Bathymetry, 2- Way Traveltime: 001350
Bathymetry, Corrected Depth: 101.0
Magnetics Total Field, 1st Sensor: 439090
Magnetics Residual Field: -04850
Min/Max Data Record:
Date: 1979 03 13
Latitude: +33.15830
Longitude: -106.85630
Bathymetry, 2- Way Traveltime: 043900
Bathymetry, Corrected Depth: 3280.0
Magnetics Total Field, 1st Sensor: 492070
Magnetics Residual Field: +05530