This DVD+R contains FINAL gridded data from the Offshore NE Tasmania
airborne geophysical survey of 2008/9.

The survey was flown and compiled from December 2008 to January 2009 by
Fugro Airborne Surveys Pty Ltd for Geoscience Australia and is located
off the Northern and Eastern coasts of Flinders Island, Tasmania.

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:
    <AREA>_<gridded_parameter>
    where
       gridded parameters are:
       mag    = Residual magnetic intensity                       (nT)
       rtp    = Residual magnetic intensity reduced to the pole   (nT)
       rtp1vd = 1VD of RTP (2D Fourier)                           (nT/m)
       dem    = Digital elevation model                           (m AHD)

NOTES:
Magnetic and DTM grids gridded using the bi-cubic spline method.

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

RTP: Inclination and declination was used to compute the RTP.
     Position:     148 deg E, 40 deg S, 100 m (GDA94, height is ellipsoidal)
     IGRF:         Model 2005, Date 2008/12/30
     Inclination:  -70.221
     Declination:   13.833

DEM: Corrected for parallax, sensor separation and ellipsoid/geoid separation.
     Trimmed to "over land" areas. Adjusted to same mean level as existing GADDS
     gravity data.