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citations for verification. (July 2007)| - This article is about
artificial seismic sources. For natural seismic sources, see
Earthquake, Volcano, and related articles. A seismic source is a
device that generates controlled seismic energy used to perform
both reflection and refraction seismic surveys. A seismic source
can be simple, such as dynamite, or it can use more
sophisticated technology, such as a specialized air gun. Seismic
sources can provide single pulses or continuous sweeps of
energy. Both types of seismic sources generate seismic waves,
which travel through a medium such as water or layers of rocks.
Some of the waves then reflect and refract and is recorded by
receivers, such as geophones or hydrophones. Seismic sources may
be used to investigate shallow subsoil structure, for
engineering site characterisation, or