On Ms:mb Statistics for Earthquakes and Explosions and their Relation to Some Source Parameters
Characteristics used for discrimination between earthquakes and explosions are mostly related to the spectral content of seismic events. Difference in size of sources (with mb=6 the size of an explosion source is of the order of 1 km and the size of a tectonic earthquake is about 10 km) and in duration of the process of rupture (0.5 and 5 s respectively) make altogether the seismic radiation of earthquakes richer in low frequencies in comparison with the explosions of similar magnitude measured on mb scale (Dahlman and Israelson, 1977).
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