Survey Identifier: DSDP61GC
Format Acronym: MGD77
Data Center File Number: 15050060
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): LARSON R.L.,SCHLANGER S.
Project: DEEPSEA DRILL.LG 61 <NSF>
Survey Departure Date (yyyymmdd): 19780522
Port of Departure: APRA,GUAM
Survey Arrival Date (yyyymmdd): 19780729
Port of Arrival: MAJURO,MARSHALL ISLANDS
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: +14
Bottommost Latitude: +07
Leftmost Longitude: +144
Rightmost Longitude: +172
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: 5027
Min/Max Data Record:
Date: 1978 05 22
Latitude: +7.13750
Longitude: +144.57500
Bathymetry, 2- Way Traveltime: 007050
Bathymetry, Corrected Depth: 534.0
Magnetics Total Field, 1st Sensor: 330160
Magnetics Residual Field: -08940
Min/Max Data Record:
Date: 1978 07 28
Latitude: +13.43330
Longitude: +171.06160
Bathymetry, 2- Way Traveltime: 130000
Bathymetry, Corrected Depth: 10055.0
Magnetics Total Field, 1st Sensor: 365600
Magnetics Residual Field: +07030