Survey Identifier: DSDP78BC
Format Acronym: MGD77
Data Center File Number: 15050078
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): HYNDMAN R., SALISBURY M.
Project: DEEPSEA DRILL. LG78B<NSF OCE76-22680>
Survey Departure Date (yyyymmdd): 19810314
Port of Departure: SAN JUAN,PUERTO RICO
Survey Arrival Date (yyyymmdd): 19810408
Port of Arrival: LAS PALMAS,CANARY IS.
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: +28
Bottommost Latitude: +18
Leftmost Longitude: -067
Rightmost Longitude: -018
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: 3870
Min/Max Data Record:
Date: 1981 03 14
Latitude: +18.56410
Longitude: -66.01301
Bathymetry, 2- Way Traveltime: 009875
Bathymetry, Corrected Depth: 749.0
Magnetics Total Field, 1st Sensor: 383800
Magnetics Residual Field: -06230
Min/Max Data Record:
Date: 1981 04 08
Latitude: +27.55860
Longitude: -18.12479
Bathymetry, 2- Way Traveltime: 097150
Bathymetry, Corrected Depth: 7429.0
Magnetics Total Field, 1st Sensor: 415200
Magnetics Residual Field: +05650