Directional filtering using multicomponent seismic arrays

Robert R. Stewart

Three-component (3-C) geophone recordings can be used to infer the incidence direction of impinging seismic waves. Single 3-C station records have been analysed, in the past, using a variety of algorithms. Many of these methods are based on least-squares fitting of a line to an assumed polarization ellipsoid. To assist in direction estimation, I propose to use linear, in-line arrays of 3-C geophones. The multiplicity of recordings promises to provide better estimates of arrival direction and thus better enhancement or rejection of given events.