Survey Identifier: DSDP19GC
Format Acronym: MGD77
Data Center File Number: 15050017
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19791122
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): CREAGER J.S.,SCHOLL D.W.
Project: DEEPSEA DRILL.LG 19 <NSF>
Survey Departure Date (yyyymmdd): 19710722
Port of Departure: KODIAK,ALASKA
Survey Arrival Date (yyyymmdd): 19710909
Port of Arrival: YOKOHAMA,JAPAN
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: ANAL.RECORDS,CARDS,35MMFILM
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: +58
Bottommost Latitude: +44
Leftmost Longitude: +147
Rightmost Longitude: -152
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: *TIME*NAV AND RECORDS ORIGINALLY IN LOCAL TZ. DIGITIZED DATA CONVERTED TO GMT.
Number of Data Records: 4434
Min/Max Data Record:
Date: 1971 07 23
Latitude: +44.04290
Longitude: -179.97880
Bathymetry, 2- Way Traveltime: 000800
Bathymetry, Corrected Depth: 60.0
Magnetics Total Field, 1st Sensor: 472500
Magnetics Residual Field: -09400
Min/Max Data Record:
Date: 1971 09 09
Latitude: +57.23050
Longitude: +180.00000
Bathymetry, 2- Way Traveltime: 099500
Bathymetry, Corrected Depth: 7565.0
Magnetics Total Field, 1st Sensor: 539200
Magnetics Residual Field: +10300