SPI^TM is a quick, easy, and powerful method for calculating the depth of magnetic sources. Its accuracy has been shown to be 20% in tests on real datasets with drillhole control. This accuracy is similar to that of Euler deconvolution, however SPI^TM has the advantages that it produces a more complete set of coherent solution points and is easier to use.

SPI^TM is a trademark of Geoterrex-Fugro.

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