Survey Identifier: V1812
Format Acronym: MGD77
Data Center File Number: 01030029
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890630
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: U.S.A.
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): M. LANGSETH
Project: CRUISE 18, LEG 12
Survey Departure Date (yyyymmdd): 19620714
Port of Departure: FREEMANTLE, AUSTRALIA
Survey Arrival Date (yyyymmdd): 19620801
Port of Arrival: WELLINGTON, NEW ZEALAND
Navigation Instrumentation: SEXTANT
Geodetic Datum/Position: DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD. DOC./18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG. PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: GRAF-ASKANIA GSS2-12
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU.IN.AIRGUN, EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2-CHANNEL SHEET RECORDS
Topmost Latitude of Survey: -31
Bottommost Latitude: -42
Leftmost Longitude: +113
Rightmost Longitude: +175
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 060
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAV. PTS.
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
Additional Documentation: 06 - 12 KHZ, WIDE BEAM (60 DEG),1 SECOND SWEEP
Number of Data Records: 3275
Min/Max Data Record:
Date: 1962 07 14
Latitude: -41.44380
Longitude: +113.65940
Bathymetry, 2- Way Traveltime: 000175
Bathymetry, Corrected Depth: 13.0
Magnetics Total Field, 1st Sensor: 573510
Magnetics Residual Field: -05660
Free-Air Anomaly: -0957
Min/Max Data Record:
Date: 1962 08 01
Latitude: -31.89900
Longitude: +174.71660
Bathymetry, 2- Way Traveltime: 080000
Bathymetry, Corrected Depth: 6052.0
Magnetics Total Field, 1st Sensor: 624540
Magnetics Residual Field: +06970
Free-Air Anomaly: +0817