Recovery of piecewise smooth density and Lam\'e parameters from high-frequency exterior Cauchy data

Autor:	Bhattacharyya, Sombuddha, de Hoop, Maarten V., Katsnelson, Vitaly, Uhlmann, Gunther
Rok vydání:	2022
Předmět:	Mathematics - Analysis of PDEs 35S30 35L51
Druh dokumentu:	Working Paper
Popis:	We consider an isotropic elastic medium occupying a bounded domain D whose density and Lam\'e parameters are piecewise smooth. In the elastic wave initial value inverse problem, we are given the solution operator for the elastic wave equation, but only outside the domain D and only for initial data supported outside D, and we study the recovery of the density and Lam\'e parameters. For known density, results have recently been obtained using the scattering control method to recover wave speeds. Here, we extend this result to include the recovery of the density in addition to the Lam\'e parameters under certain geometric conditions using techniques from microlocal analysis and a connection to local tensor tomography. Comment: 25 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2203.08735 Zobrazit plný text záznamu View this record from Arxiv