Survey Identifier: ELT42
Format Acronym: MGD77
Data Center File Number: 01020044
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): ROBERT HOUTZ
Project: CRUISE 042
Funding: NSF
Survey Departure Date (yyyymmdd): 19700228
Port of Departure: ADELAIDE, AUSTRALIA
Survey Arrival Date (yyyymmdd): 19700409
Port of Arrival: PUNTA ARENAS, CHILE
Navigation Instrumentation: SATELLITE AND SEXTANT
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: -35
Bottommost Latitude: -71
Leftmost Longitude: +137
Rightmost Longitude: -075
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: 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: 9797235
Departure Base Station Description: ADELIADE, AUSTRALIA
Arrival Base Station Gravity: 9813151
Arrival Base Station Description: PUNTA ARENAS, CHILE
Number of Data Records: 18166
Min/Max Data Record:
Date: 1970 02 28
Latitude: -70.02710
Longitude: -179.99780
Bathymetry, 2- Way Traveltime: 000325
Bathymetry, Corrected Depth: 24.0
Magnetics Total Field, 1st Sensor: 353680
Magnetics Residual Field: -05760
Free-Air Anomaly: -0660
Min/Max Data Record:
Date: 1970 04 09
Latitude: -34.97500
Longitude: +179.99050
Bathymetry, 2- Way Traveltime: 081525
Bathymetry, Corrected Depth: 6145.0
Magnetics Total Field, 1st Sensor: 663760
Magnetics Residual Field: +14430
Free-Air Anomaly: +2443