Can You Describe Seismic Noise. Can You Please Also Explain The Characteristics Of The Seismic Noise To Be Suppressed In Field Recording?

A major impetus for the development of new energy sources and new field techniques in reflection recording has been the necessity for eliminating or suppressing spurious seismic signals from ground motion not associated with the reflections. Such signals are generally referred to as noise. Noise has always been the troublesome problem in seismic prospecting. In some areas it still poses more of a challenge that can be met at the present state of the art. And most of the improvement that has been achieved since the early 1930s in the effectiveness of the seismic reflection method has been brought about by the introduction of various techniques designed for suppressing noise on records.

Two primary approaches are used for reducing seismic noise to enhance desired reflections. One is to set up a recording in the field. The other is to process the data after they are recorded in a way that will suppress the noise, generally by appropriate filtering. Both approaches to noise reduction are generally pursued simultaneously. The principle types of the noise associated with the land shooting are surface and near surface waves, scattered or incoherent noise, and multiple reflections. This can be said about any of the type that this is better than the other one because both have their own merits and demerits.

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