Survey Identifier: ELT18
Format Acronym: MGD77
Data Center File Number: 01020018
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): LAWERENCE OBLINGER
Project: CRUISE 018
Funding: NSF
Survey Departure Date (yyyymmdd): 19650525
Port of Departure: VALPARAISO, CHILE
Survey Arrival Date (yyyymmdd): 19650616
Port of Arrival: TALCHUANO, CHILE
Navigation Instrumentation: SEXTANT
Geodetic Datum/Position: DEADRECKONING
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: -59
Leftmost Longitude: -100
Rightmost Longitude: -071
General Digitizing Rate of Bathymetry: 32
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 27
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: 9206
Min/Max Data Record:
Date: 1965 05 25
Latitude: -58.15000
Longitude: -99.60000
Bathymetry, 2- Way Traveltime: 001475
Bathymetry, Corrected Depth: 111.0
Magnetics Total Field, 1st Sensor: 281760
Magnetics Residual Field: -05570
Min/Max Data Record:
Date: 1965 06 16
Latitude: -33.00000
Longitude: -71.66670
Bathymetry, 2- Way Traveltime: 078225
Bathymetry, Corrected Depth: 5888.0
Magnetics Total Field, 1st Sensor: 475480
Magnetics Residual Field: +03950