Survey Identifier: DSDP46GC
Format Acronym: MGD77
Data Center File Number: 15050045
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): DMITRIEV L.,HEIRTZLER J.
Project: DEEPSEA DRILL.LG 46 <NSF>
Survey Departure Date (yyyymmdd): 19760128
Port of Departure: SAN JUAN,PUERTO RICO
Survey Arrival Date (yyyymmdd): 19760310
Port of Arrival: LAS PALMAS,CANARY ISLANDS
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: +28
Bottommost Latitude: +18
Leftmost Longitude: -066
Rightmost Longitude: -017
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: 4064
Min/Max Data Record:
Date: 1976 01 28
Latitude: +18.58760
Longitude: -65.99530
Bathymetry, 2- Way Traveltime: 003324
Bathymetry, Corrected Depth: 252.0
Magnetics Total Field, 1st Sensor: 382210
Magnetics Residual Field: -07480
Min/Max Data Record:
Date: 1976 03 09
Latitude: +27.77660
Longitude: -17.29010
Bathymetry, 2- Way Traveltime: 095200
Bathymetry, Corrected Depth: 7274.0
Magnetics Total Field, 1st Sensor: 421540
Magnetics Residual Field: +08120