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On the migration of precursors of strong earthquakes
Author(s) -
Bella F.,
Biag P.F.,
Caputo M.,
Monica G. Della,
Ermini A.,
Sgrigna V.
Publication year - 1992
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.1992.tb00617.x
Subject(s) - geology , perturbation (astronomy) , crust , seismology , geophysics , physics , quantum mechanics
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 cm 1 . 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.