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handle: 10400.3/4947
Os abalos sísmicos dos Açores dependem certamente do mecanismo que faz mover as três placas litosféricas que existem na área destas ilhas. Um modelo de mecanismo que parece, adequado para explicar o ritmo das crises sísmicas baseia-se em pulsações de gravitação. Entre as principais perturbações neste ritmo figuram as marés terrestres (especialmente a semi-anual) e as variações de energia elástica disponível, devidas à própria fraturação que produz os abalos.
ABSTRACT: The earthquakes of the Azores are supposed to result film movement predicted by the Theory, of Plate Tectonics. Gravitational pulsations seem to be an adequate mechanism for explaining the rhythm of earthquake swarms. Some perturbation on the occurrence of the seismic swarm is probably due to Earth tides (mainly the solar semi-annual one) and to change in the available strain energy, produced by the fracturing associated with the swarms.
Tectónica de Placas, Sismologia, Açores
Tectónica de Placas, Sismologia, Açores
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