Survey Identifier: ELT40


Format Acronym: MGD77
Data Center File Number: 01020040
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): RANDY MEIJER
Project: CRUISE 040
Funding: NSF
Survey Departure Date (yyyymmdd): 19690915
Port of Departure: AUCKLAND, NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19691120
Port of Arrival: CHRISTCHURCH, NEW ZEALAND
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: -22
Bottommost Latitude: -44
Leftmost Longitude: +173
Rightmost Longitude: -159
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: 40
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: 9799608
Departure Base Station Description: AUCKLAND, NEW ZEALAND
Arrival Base Station Gravity: 9805081
Arrival Base Station Description: CHRISTCHURCH, NEW ZEALAND
Number of Data Records: 22336

Min/Max Data Record:
Date: 1969 09 15
Latitude: -43.29750
Longitude: -179.99580
Bathymetry, 2- Way Traveltime: 000675
Bathymetry, Corrected Depth: 51.0
Magnetics Total Field, 1st Sensor: 414310
Magnetics Residual Field: -11720
Free-Air Anomaly: -3084

Min/Max Data Record:
Date: 1969 11 20
Latitude: -22.02490
Longitude: +179.99790
Bathymetry, 2- Way Traveltime: 120775
Bathymetry, Corrected Depth: 9296.0
Magnetics Total Field, 1st Sensor: 587050
Magnetics Residual Field: +09830
Free-Air Anomaly: +2077