Abstract

Conventional seismic data recording and processing paid less attention to low frequencies (<10 Hz) mostly in view of the high noise content in them, but the importance of having low frequencies is well understood in recent times. Broadband seismic techniques record and process data with frequencies as low as 2 Hz. The term low frequency processing, in general, is still assumed to be associated with high fidelity, broad band recorded seismic data only. Seismic data recorded and processed with conventional techniques often do not express much information in the low frequency bands. With new, deeper targets of seismic exploration and increased costs, better utilization of the already recorded data assumes paramount importance.