论文标题

分层的弹性介质中的位错,并应用到故障检测

Dislocations in a layered elastic medium with applications to fault detection

论文作者

Aspri, Andrea, Beretta, Elena, Mazzucato, Anna L.

论文摘要

我们考虑了地球物理学中弹性位错的模型。我们将地壳的一部分建模为具有埋入断层表面的有界的,不均匀的弹性体,并沿着滑动发生。假设仅有界的弹性模量,我们证明了所得混合体值传输问题的适当性。我们在确定断层表面的逆问题中建立了唯一性,并从表面的开放贴片上的位移的独特测量中滑动,除了地球外壳是一种各向同性,分层的介质,带有Lamé系数的分层介质,该系数是在已知的分区上lipewise Lipschitz上的,并且对断层表面是对任意坐标系统的图形。这些结果大大扩展了{Arch中的作者的结果。配给。机械。肛门。} {\ bf 263}(2020),n。 1,71--111。

We consider a model for elastic dislocations in geophysics. We model a portion of the Earth's crust as a bounded, inhomogeneous elastic body with a buried fault surface, along which slip occurs. We prove well-posedness of the resulting mixed-boundary-value-transmission problem, assuming only bounded elastic moduli. We establish uniqueness in the inverse problem of determining the fault surface and the slip from a unique measurement of the displacement on an open patch at the surface, assuming in addition that the Earth's crust is an isotropic, layered medium with Lamé coefficients piecewise Lipschitz on a known partition and that the fault surface is a graph with respect to an arbitrary coordinate system. These results substantially extend those of the authors in {Arch. Ration. Mech. Anal.} {\bf 263} (2020), n. 1, 71--111.

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