Three New Fundamental Problems in Physics of the Aftershocks

Guglielmi, A.V.; Zavyalov, A.D.; Zotov, O.D.

Авторы: Guglielmi A.V., Zavyalov A.D., Zotov O.D.
Журнал: Cornell University Library: arXiv:2001.10569. Submitted on 28 Jan 2020
Год издания: 2020
Первая страница: 1
Последняя страница: 27
Аннотация: Recently, the physics of aftershocks has been enriched by three new problems. We will conditionally call them dynamic, inverse, and morphological problems. They were clearly formulated, partially resolved and are fundamental. Dynamic problem is to search for the cumulative effect of a round-the-world seismic echo appearing after the mainshock of earthquake. According to the theory, a converging surface seismic wave excited by the main shock returns to the epicenter about 3 hours after the main shock and stimulates the excitation of a strong aftershock. Our observations confirm the theoretical expectation. The second problem is an adequate description of the averaged evolution of the aftershock flow. We introduced a new concept about the coefficient of deactivation of the earthquake source, “cooling down” after the main mainshock, and proposed an equation that describes the evolution of aftershocks. Based on the equation of evolution, we posed and solved the inverse problem of the physics of the earthquake source and created an Atlas of aftershocks demonstrating the diversity of variations of the deactivation coefficient. The third task is to model the spatial and spatio-temporal distribution of aftershocks. Its solution refines our understanding of the structure of the earthquake source. We also discuss in detail interesting unsolved problems in the physics of aftershocks.
Добавил в систему: Завьялов Алексей Дмитриевич

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Three New Fundamental Problems in Physics of the Aftershocksстатья Исследовательская статья Электронная публикация

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