Survey Identifier: ELT49
Format Acronym: MGD77
Data Center File Number: 01020052
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): KONRAD KONDRATOWICZ
Project: CRUISE 049
Funding: NSF
Survey Departure Date (yyyymmdd): 19710831
Port of Departure: FREMANTLE, AUSTRALIA
Survey Arrival Date (yyyymmdd): 19711026
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: -60
Leftmost Longitude: +089
Rightmost Longitude: +116
General Digitizing Rate of Bathymetry: 28
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: 9793950
Departure Base Station Description: FREMANTLE, AUSTALIA
Arrival Base Station Gravity: 9793950
Arrival Base Station Description: FREMANTLE, AUSTRALIA
Additional Documentation: PDR3.5KHZ 38 DEGREE 1/SEC SWEEP ALSO USED ON BATHYMETRY
Number of Data Records: 28977
Min/Max Data Record:
Date: 1971 08 31
Latitude: -59.85380
Longitude: +89.57850
Bathymetry, 2- Way Traveltime: 000675
Bathymetry, Corrected Depth: 51.0
Magnetics Total Field, 1st Sensor: 555040
Magnetics Residual Field: -11070
Free-Air Anomaly: -1196
Min/Max Data Record:
Date: 1971 10 26
Latitude: -31.94670
Longitude: +115.46170
Bathymetry, 2- Way Traveltime: 086900
Bathymetry, Corrected Depth: 6591.0
Magnetics Total Field, 1st Sensor: 656880
Magnetics Residual Field: +03490
Free-Air Anomaly: +0784