The Nth-root stack: a cheap and effective processing technique

Abstract

Geophysical data are typically very noisy, so multichannel observations are usually made and these data stacked in order to extract the signal. Compared with subsequent processing of the data, there is rarely very much thought put into the stacking process, yet this is a crucial step. If the stacking process used is not optimum for the particular application of the data, information will have been lost or obscured and no amount of subsequent processing can recover it.