Survey Identifier: DSDP45GC
Format Acronym: MGD77
Data Center File Number: 15050044
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19791128
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): MELSON W.G.,RABINOWITZ P.D.
Project: DEEPSEA DRILL.LG 45 <NSF>
Survey Departure Date (yyyymmdd): 19751130
Port of Departure: SAN JUAN,PUERTO RICO
Survey Arrival Date (yyyymmdd): 19760120
Port of Arrival: SAN JUAN,PUERTO RICO
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: +24
Bottommost Latitude: +18
Leftmost Longitude: -067
Rightmost Longitude: -043
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: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 3436
Min/Max Data Record:
Date: 1975 11 30
Latitude: +18.50000
Longitude: -66.09160
Bathymetry, 2- Way Traveltime: 004550
Bathymetry, Corrected Depth: 347.0
Magnetics Total Field, 1st Sensor: 394010
Magnetics Residual Field: -07440
Min/Max Data Record:
Date: 1976 01 20
Latitude: +23.19040
Longitude: -43.50360
Bathymetry, 2- Way Traveltime: 099474
Bathymetry, Corrected Depth: 7615.0
Magnetics Total Field, 1st Sensor: 423110
Magnetics Residual Field: -01400