Survey Identifier: ELT25
Format Acronym: MGD77
Data Center File Number: 01020025
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): ROBERT HOUTZ
Project: CRUISE 025
Funding: NSF
Survey Departure Date (yyyymmdd): 19660925
Port of Departure: VALPARAISO, CHILE
Survey Arrival Date (yyyymmdd): 19661120
Port of Arrival: WELLINGTON, NEW ZEALAND
Navigation Instrumentation: SATELLITE AND SEXTANT
Geodetic Datum/Position: SATELLITE AND 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: L-DGO 26.3 CU IN AIRGUN,STREAMER,DRUM RE
Formats of Seismic Data: TWO-2CHANNELS, SHEET RECORDS
Topmost Latitude of Survey: -33
Bottommost Latitude: -65
Leftmost Longitude: +174
Rightmost Longitude: -072
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
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: LINEAR INERPOLATION BETWEEN NAVIGATION POINTS
Additional Documentation: PDR 12KHZ WIDEBEAM 60 DEGREE ONCE PER SECOND SWEEP
Number of Data Records: 18937
Min/Max Data Record:
Date: 1966 09 25
Latitude: -64.65000
Longitude: -180.00000
Bathymetry, 2- Way Traveltime: 000950
Bathymetry, Corrected Depth: 71.0
Magnetics Total Field, 1st Sensor: 271750
Magnetics Residual Field: -16170
Min/Max Data Record:
Date: 1966 11 20
Latitude: -33.00000
Longitude: +179.99220
Bathymetry, 2- Way Traveltime: 077050
Bathymetry, Corrected Depth: 5818.0
Magnetics Total Field, 1st Sensor: 618250
Magnetics Residual Field: +13790