Survey Identifier: DSDP54GC
Format Acronym: MGD77
Data Center File Number: 15050053
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): HEKINIAN R.,ROSENDAHL B.
Project: DEEPSEA DRILL.LG 54 <NSF>
Survey Departure Date (yyyymmdd): 19770429
Port of Departure: CRISTOBAL,CANAL ZONE
Survey Arrival Date (yyyymmdd): 19770618
Port of Arrival: LOS ANGELES,CALIFORNIA
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: +33
Bottommost Latitude: +00
Leftmost Longitude: -118
Rightmost Longitude: -079
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: 13717
Min/Max Data Record:
Date: 1977 05 01
Latitude: +0.57030
Longitude: -117.37600
Bathymetry, 2- Way Traveltime: 006200
Bathymetry, Corrected Depth: 464.0
Magnetics Total Field, 1st Sensor: 319850
Magnetics Residual Field: -13010
Min/Max Data Record:
Date: 1977 06 17
Latitude: +32.44120
Longitude: -79.85000
Bathymetry, 2- Way Traveltime: 068325
Bathymetry, Corrected Depth: 5146.0
Magnetics Total Field, 1st Sensor: 489550
Magnetics Residual Field: +12530