This DVD+R contains FINAL gridded data from the
NORTH WEST TASMANIAN OFFSHORE AIRBORNE MAGNETIC SURVEY (NWTOAMS)
airborne geophysical survey of 2008.

The survey consists of 1 area.
Aircraft used was:
  VH-EXS Aerocommander 500S

The survey was flown and compiled from January 2008 to May 2008 by
Fugro Airborne Surveys Pty Ltd for Geoscience Australia and is located
on the western edge of the 1:100,000 King Island Special map sheet.


Gridded data has been supplied in FINAL form.

All grids are in ERMapper format.
Datum =      GDA94
Projection = MGA55

The directory structure is:
<PROJ>/gridded/<GRID FILES>
where:
  PROJ = Geoscience Australia project number

<GRID FILES>
  Grid file names are of the form:
    <gridded_parameter>
    where
       gridded parameters are:
       mag     = Magnetic intensity (nT)
       magS    = Magnetic intensity (nT) (smoothed)
       rtp     = Magnetic intensity reduced to the pole  (nT)
       rtp1vd  = 1VD of RTP (2D Fourier)  (nT/m)
       rtpS    = magS reduced to the pole  (nT)
       rtpS1vd = 1VD of RTPS (2D Fourier)  (nT/m)

NOTES:
mag and magS grids gridded using the bi-cubic spline method.

mag:  Corrected for diurnal, IGRF & parallax.
      Tie line levelled and micro-levelled.

magS: As per mag and then a low pass filter was applied to selected areas.

RTP:  Inclination and declination used to compute the RTP.
      Position:     140000 E, 5540000 N, 80 m (MGA55, height is ellipsoidal)
      IGRF:         Model 2005, Date 2008/01/20
      Inclination:  -71.151
      Declination:   11.417

RTPS: Inclination and declination used to compute the RTP.
      Position:     140000 E, 5540000 N, 80 m (MGA55, height is ellipsoidal)
      IGRF:         Model 2005, Date 2008/01/20
      Inclination:  -71.151
      Declination:   11.417