Survey Identifier: ELT31
Format Acronym: MGD77
Data Center File Number: 01020031
Parameters Surveyed Code: 55513
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): MAREK TRUCHAN
Project: CRUISE 031
Funding: NSF
Survey Departure Date (yyyymmdd): 19671116
Port of Departure: SAN FRANCISCO, USA
Survey Arrival Date (yyyymmdd): 19671219
Port of Arrival: DUNEDIN, NEW ZEALAND
Navigation Instrumentation: SATELLITE AND DEADRECKONING
Geodetic Datum/Position: SATELLITE AND DEADRECKONING
Bathymetry Instrumentation: PDR 12KHZ WIDEBEAM 60 DEGREE 1/SEC SWEEP
Additional Forms of Bathymetric Data: ANALOG DATA
Magnetics Instrumentation: VARIAN PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG DATA
Gravity Instrumentation: GRAF-ASKANIA GSS-2-25
Additional Forms of Gravity Data: ANALOG DATA
Seismic Instrumentation: L-DGO 26.3CU IN AIRGUN,STREAMER,DRUM REC
Formats of Seismic Data: TWO-2CHANNELS, SHEET RECORDS
Topmost Latitude of Survey: +39
Bottommost Latitude: -45
Leftmost Longitude: +170
Rightmost Longitude: -122
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: 44
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-1965
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Departure Base Station Gravity: 9799745
Departure Base Station Description: SAN FRANCISCO, USA
Arrival Base Station Gravity: 9807413
Arrival Base Station Description: DUNEDIN, NEW ZEALAND
Number of Data Records: 10577
Min/Max Data Record:
Date: 1967 11 15
Latitude: -45.72830
Longitude: -180.00000
Bathymetry, 2- Way Traveltime: 000600
Bathymetry, Corrected Depth: 45.0
Magnetics Total Field, 1st Sensor: 327500
Magnetics Residual Field: -05640
Free-Air Anomaly: -2486
Min/Max Data Record:
Date: 1967 12 19
Latitude: +38.13440
Longitude: +179.98770
Bathymetry, 2- Way Traveltime: 118600
Bathymetry, Corrected Depth: 9120.0
Magnetics Total Field, 1st Sensor: 550880
Magnetics Residual Field: +05870
Free-Air Anomaly: +1717