On the migration of precursors of strong earthquakes |
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| Authors: | F Bella PF Biag M Caputo G Della Monica A Ermini V Sgrigna |
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| Institution: | Dipartimento di Fisical, Università'La Sapienra', Piazzale A. Moro 2,1–00185 Rome, Italy;Dipartimento di Scienze della Terra, Università'La Sapienra', Piazzale A. Moro 2,1–00185 Rome, Italy |
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| Abstract: | It is found that perturbations presumedly associated with swarms, the B patterns and the BG pattern precursors of strong earthquakes in New Zealand, California and Apennines, propagate in the crust of the Earth with a velocity of the order of cm1. The hypothesis that a single travelling elastic perturbation causes a set of precursors of the same strong earthquake is discussed and it is concluded that each precursor is associated with a different perturbation. |
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