27 January 2020
In this E-Lecture: a novel seismic acquisition and processing methodology is demonstrated. The method retrieves the response of the earth from data acquired with continuous source and receiver wavefields. The ideal source wavefield would be band-limited white noise. Ways of generating a source wavefield which approaches the properties of white noise using existing air-gun equipment will be discussed using real data examples. Seismic data acquired by triggering individual air-guns with short randomized time intervals in a near continuous fashion will be compared to seismic data acquired with large source arrays triggered every 25m. The continuous source wavefield improves the sampling of common-receiver gathers compared to conventional acquisition methods. Spreading the source energy out in time results in reduced peak sound pressure levels with the new method.