Survey Identifier: ELT20
Format Acronym: MGD77
Data Center File Number: 01020020
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19890705
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ELTANIN
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): WALTER PITMAN
Project: CRUISE 020
Funding: NSF
Survey Departure Date (yyyymmdd): 19650914
Port of Departure: AUCKLAND, NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19651112
Port of Arrival: VALPARAISO, CHILE
Navigation Instrumentation: SEXTANT AND SATELLITE
Geodetic Datum/Position: DEADRECKONING AND SATELLITE
Bathymetry Instrumentation: SEE ADDITIONAL DOCUMENTATION SEQ-18-178
Additional Forms of Bathymetric Data: ANALOG DATA
Magnetics Instrumentation: VARIAN PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG DATA
Seismic Instrumentation: RAYFLEX SEISMIC SYSTEM, STRIP RECORDER
Formats of Seismic Data: 10 KILOJOULES, SPARKER, STREAMER
Topmost Latitude of Survey: -33
Bottommost Latitude: -63
Leftmost Longitude: +175
Rightmost Longitude: -071
General Digitizing Rate of Bathymetry: 28
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 28
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LINEAR INERPOLATION BETWEEN NAVIGATION POINTS
Additional Documentation: PDR 12KHZ WIDEBEAM 60 DEGREE ONCE PER SECOND SWEEP
Number of Data Records: 29451
Min/Max Data Record:
Date: 1965 09 14
Latitude: -62.16670
Longitude: -179.99760
Bathymetry, 2- Way Traveltime: 000625
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 271800
Magnetics Residual Field: -06540
Min/Max Data Record:
Date: 1965 11 12
Latitude: -33.05000
Longitude: +179.98930
Bathymetry, 2- Way Traveltime: 080725
Bathymetry, Corrected Depth: 6082.0
Magnetics Total Field, 1st Sensor: 599220
Magnetics Residual Field: +12130