Survey Identifier: NR7601
Format Acronym: MGD77
Data Center File Number: 05010001
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19840416
Source Institution: GEOPHYSICS DIVISION, DSIR, NEW ZEALAND
Country: NEW ZEALAND
Platform Name: GRV TANGAROA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): F. J. DAVEY
Project: NORFOLK RIDGE 1
Funding: NZ GOVERNMENT
Survey Departure Date (yyyymmdd): 19760628
Port of Departure: WELLINGTON, NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19760707
Port of Arrival: WILLINGTON, NEW ZEALAND
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE AND DEAD RECKONING
Bathymetry Instrumentation: 12KHZ FREQUENCY
Magnetics Instrumentation: PROTON PRECESSION, ELSEC
Seismic Instrumentation: SINGLE CHANNEL
Formats of Seismic Data: MICROFILM AND ANALOG
Topmost Latitude of Survey: -35
Bottommost Latitude: -40
Leftmost Longitude: +170
Rightmost Longitude: +174
General Digitizing Rate of Bathymetry: 150
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 15-MINUTE INTERVALS AND PEAK AND TROUGHS
General Digitizing Rate of Magnetics: 009
General Sampling Rate of Magnetics: 54
Reference Field Code: 88
Reference Field: PGRF-75
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
Additional Documentation: DATA RECORDED IN GREENWICH MEAN TIME, BATHYMETRY CORRECTED FOR DRAUGHT AND WATER DENSITY
Number of Data Records: 9566
Min/Max Data Record:
Date: 1976 06 28
Latitude: -39.12400
Longitude: +170.89900
Bathymetry, Corrected Depth: 151.0
Magnetics Total Field, 1st Sensor: 547020
Magnetics Residual Field: -04370
Min/Max Data Record:
Date: 1976 07 07
Latitude: -35.07800
Longitude: +173.91600
Bathymetry, Corrected Depth: 2081.0
Magnetics Total Field, 1st Sensor: 571110
Magnetics Residual Field: +06800