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Statut |
Confirmé |
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Série |
FORUM-ENS |
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Domaines |
cond-mat.stat-mech |
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Date |
Mercredi 13 Mars 2024 |
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Heure |
12:45 |
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Institut |
LPENS |
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Salle |
3 rue d Ulm, College de France |
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Nom de l'orateur |
Petrelis |
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Prenom de l'orateur |
François |
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Addresse email de l'orateur |
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Institution de l'orateur |
LPENS |
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Titre |
Earthquake statistical properties: an explanation for the distribution of magnitude and for the existence of aftershocks |
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Résumé |
Earthquakes in nature follow several statistical properties. In particular, the distribution of energy released by
an
earthquake (Gutenberg-Richter's law) and the frequency of aftershocks after a large event (Omori's law) are
both
power-laws.
By studying several earthquake models, we have shown that the Gutenberg-Richter law results from the
spatial
distribution of the stress field. This field is self-similar at large scale and for two dimensionnal systems can
be
modelled as a random surface. Using this analogy, a series of predictions is made that includes the
Gutenberg-
Richter law and the value of its exponent (so called b-value) together with the existence of aftershocks and
their
temporal distribution following Omori's law. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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