Survey Identifier: DSDP77GC
Format Acronym: MGD77
Data Center File Number: 15050076
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19820921
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: D/V GLOMAR CHALLENGER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BUFFLER R.,SCHLAGER W.
Project: DEEPSEA DRILL.LG77 <NSF>
Survey Departure Date (yyyymmdd): 19801228
Port of Departure: FORT LAUDERDALE,FLORIDA
Survey Arrival Date (yyyymmdd): 19810129
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: 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
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO 550 REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: +25
Bottommost Latitude: +19
Leftmost Longitude: -086
Rightmost Longitude: -069
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: 6195
Min/Max Data Record:
Date: 1980 12 28
Latitude: +19.75220
Longitude: -85.45990
Bathymetry, 2- Way Traveltime: 003725
Bathymetry, Corrected Depth: 285.0
Magnetics Total Field, 1st Sensor: 429420
Magnetics Residual Field: -06540
Min/Max Data Record:
Date: 1981 01 29
Latitude: +24.25370
Longitude: -69.61770
Bathymetry, 2- Way Traveltime: 058750
Bathymetry, Corrected Depth: 4431.0
Magnetics Total Field, 1st Sensor: 470870
Magnetics Residual Field: -00840