Reconstruction of Seismic Ground Motions inside a Domain Reduction Method Boundary in a PML-truncated Domain

B. Guidio, H. Goh, C. Jeong

Research output: Contribution to conferencePaperpeer-review

Abstract

A new inverse modeling is investigated for reconstructing the seismic ground motions in an interior domain surrounded by a domain reduction method (DRM) boundary from limited seismic measurement data. The non-convolutional second-order complex-frequency-shifted perfectly matched layers (CFS-PML) is used to truncate a two-dimensional semi-infinite domain of a plane-strain setting, and the DRM is utilized to model seismic input motions coming from the outside domain of the CFS-PML. A partial differential equation (PDE)-constrained optimization method aims at minimizing a misfit between measured motions at sensors on the surface induced by targeted incident waves (or equivalent effective forces on a DRM boundary) and their reconstructed counterparts induced by estimated effective forces. The numerical results show that the targeted wave responses in an interior domain surrounded by a DRM boundary can be accurately reconstructed.

Original languageEnglish
StatePublished - 2022
Event12th National Conference on Earthquake Engineering, NCEE 2022 - Salt Lake City, United States
Duration: Jun 27 2022Jul 1 2022

Conference

Conference12th National Conference on Earthquake Engineering, NCEE 2022
Country/TerritoryUnited States
CitySalt Lake City
Period06/27/2207/1/22

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