CONTINUATION OF POTENTIAL FIELDS BETWEEN ARBITRARY SURFACES

An equivalent source algorithm is described for continuing either one- or two-dimensional potential fields between arbitrary surfaces. In the two-dimensional case, the dipole surface is approximated as a set of plane faces with constant moments over each face. In the one-dimensional case, the plane faces of the diple surface reduce the straight line segments. Application of the algorithm to model and field examples of aeromagnetic data shows the method to be effective and accurate even when the terrain has strong topographic relief and is composed of highly magnetic volcanic rocks.