Application of Walsh transform to interpret residual magnetic anomalies due to simple geometrically shaped causative targets

Abstract EN

A set of complete and orthogonal functions of nonsinusoidal waveform, known as Walsh functions which assume only discrete amplitude values of +1 and .1, are utilized for the analysis of magnetic data.

Procedures are formulated using the Walsh transform for interpreting vertical magnetic anomalies of (1) the sphere (finite depth extent) (2) the horizontal circular cylinder, and (3) the vertical sheet of infinite depth extent.

The applicability of the method has been tested on theoretical models.

The method is also applied on the famous Kursk anomaly of a sheet of infinite depth extent, and the result is in good agreement with other published techniques.