Survey Identifier: EL55A
Format Acronym: MGD77
Data Center File Number: 01020061
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): PHILLIP HENDERSHOT
Project: CRUISE 055A
Funding: NSF
Survey Departure Date (yyyymmdd): 19721202
Port of Departure: MELBOURNE, AUSTRALIA
Survey Arrival Date (yyyymmdd): 19721229
Port of Arrival: FREMANTLE, AUSTRALIA
Navigation Instrumentation: SATELLITE AND SEXTANT
Geodetic Datum/Position: SATELLITE AND DEADRECKONING
Bathymetry Instrumentation: PDR 12KHZ 60DEG WIDEBEAM 1/SEC
Additional Forms of Bathymetric Data: ANALOG DATA
Magnetics Instrumentation: VARIAN MFG. 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-2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: -31
Bottommost Latitude: -41
Leftmost Longitude: +109
Rightmost Longitude: +145
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 INTERPOLOATION 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: 9799620
Departure Base Station Description: MELBOURNE, AUSTRALIA
Arrival Base Station Gravity: 9793951
Arrival Base Station Description: FREMANTLE, AUSTRALIA
Additional Documentation: PDR3.5KHZ 38 DEGREE 1/SEC SWEEP ALSO USED ON BATHYMETRY
Number of Data Records: 8869
Min/Max Data Record:
Date: 1972 12 02
Latitude: -40.28840
Longitude: +109.62850
Bathymetry, 2- Way Traveltime: 000125
Bathymetry, Corrected Depth: 9.0
Magnetics Total Field, 1st Sensor: 584730
Magnetics Residual Field: -07460
Free-Air Anomaly: -0870
Min/Max Data Record:
Date: 1972 12 29
Latitude: -31.95910
Longitude: +144.93020
Bathymetry, 2- Way Traveltime: 080425
Bathymetry, Corrected Depth: 6081.0
Magnetics Total Field, 1st Sensor: 628790
Magnetics Residual Field: +85610
Free-Air Anomaly: +0401