Survey Identifier: EL40A
Format Acronym: MGD77
Data Center File Number: 01020041
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ELTANIN
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DENNIS HAYES
Project: CRUISE 40A
Funding: NSF
Survey Departure Date (yyyymmdd): 19691201
Port of Departure: CHRISTCHURCH, NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19691210
Port of Arrival: ADELAIDE, AUSTRALIA
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: -36
Bottommost Latitude: -49
Leftmost Longitude: +138
Rightmost Longitude: +174
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 040
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: INTERNATIONAL1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Departure Base Station Gravity: 9805058
Departure Base Station Description: CHRISTCHURCH, NEW ZEALAND
Arrival Base Station Gravity: 9797140
Arrival Base Station Description: ADELAIDE, AUSTRALIA
Number of Data Records: 5107
Min/Max Data Record:
Date: 1969 12 01
Latitude: -48.01630
Longitude: +138.18330
Bathymetry, 2- Way Traveltime: 000575
Bathymetry, Corrected Depth: 43.0
Magnetics Total Field, 1st Sensor: 589960
Magnetics Residual Field: -04510
Free-Air Anomaly: -1176
Min/Max Data Record:
Date: 1969 12 10
Latitude: -36.36670
Longitude: +173.35930
Bathymetry, 2- Way Traveltime: 074625
Bathymetry, Corrected Depth: 5628.0
Magnetics Total Field, 1st Sensor: 627330
Magnetics Residual Field: +05670
Free-Air Anomaly: +0513