Spec-Slicer is a matched filtering
tool designed to work within the Oasis environment. Matched filtering has
been
described as pseudo depth slicing, or source separation filtering by
various users. The technique was introduced by
Spector and Grant in their 1974 paper - �Statistical models for interpreting
aeromagnetic data�
Whilst this technique has been used by some of the contractor/consulting
firms there has not, until now, been a
matched filtering tool available for general use on a widely available
platform.
Matched Filtering is a technique of separating potential field data
into groups of frequencies enclosed in the original
gridded dataset. The technique recognises that a potential field signal
is made up of a superposition of potential field
anomalies. The anomalies are defined by their wavelength and their
amplitude.
The advantage of using this method is that all the components of the
data can be viewed with minimal interference of
the other frequencies in the data. This quality has particular interest
in the top slices where images of the higher
frequencies can be created with far greater clarity and distinction
than by a traditional derivative image. The
intermediate slices contains a summary of the main structural components
of the dataset.
Spec-Slicer is available
as a 15 day trial version. The module relies on the user having access
to the 2D FFT module
MAGMAP as part of their Montaj license. The trial version is limited
to the data set which accompanies the trial
version. A comprehensive manual is also included. After 15 days the
program will continue to ask you for registration
details but you will not be able to use the software. Registration
is $990AUD, which, given the current value of the
pacific peso is about 500 USD, 560 Euro, 350 GBP or 765 CDN
You can download the trial version from http://www.triggsgeo.com and click on the Spec-Slicer button.
Thanks
David
