Survey Identifier: ELT54
Format Acronym: MGD77
Data Center File Number: 01020057
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): RUDI MARKC
Project: CRUISE 054
Funding: NSF
Survey Departure Date (yyyymmdd): 19720620
Port of Departure: FREMANTLE, AUSTRALIA
Survey Arrival Date (yyyymmdd): 19720729
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: -58
Leftmost Longitude: +067
Rightmost Longitude: +116
General Digitizing Rate of Bathymetry: 25
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: 9793938
Departure Base Station Description: FREMANTLE, AUSTRALIA
Arrival Base Station Gravity: 9793938
Arrival Base Station Description: FREMANTLE, AUSTRALIA
Additional Documentation: PDR3.5KHZ 38 DEGREE 1/SEC SWEEP ALSO USED ON BATHYMETRY
Number of Data Records: 21800
Min/Max Data Record:
Date: 1972 06 20
Latitude: -57.80840
Longitude: +67.26550
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 480500
Magnetics Residual Field: -14820
Free-Air Anomaly: -0882
Min/Max Data Record:
Date: 1972 07 29
Latitude: -31.93170
Longitude: +115.71230
Bathymetry, 2- Way Traveltime: 080200
Bathymetry, Corrected Depth: 6068.0
Magnetics Total Field, 1st Sensor: 616450
Magnetics Residual Field: +07200
Free-Air Anomaly: +1619