Simulating shallow soil response using wave propagation numerical modelling in the Western plain of Taiwan

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Title:	Simulating shallow soil response using wave propagation numerical modelling in the Western plain of Taiwan
Authors:	温國樑;Chen, Chun-Te;Kuo, Chun-Hsiang;Wen, Kuo-Liang;Lin, Che-Min;Huang, Jyun-Yan
Contributors:	地球科學學院地球科學學系
Keywords:	Bedrock;Computer simulation;Empirical analysis;Finite-differences;Geological hazards;Ground motion;Mathematical models;Miocene;Model accuracy;Modelling;Numerical modelling;Numerical simulations;Pliocene;Propagation;S waves;Seismic hazard;Seismic propagation;Seismic velocities;Seismic wave propagation;Seismic waves;Shaking;Shear wave velocities;Simulation;Soil;Soils;Substructures;Three dimensional models;Three dimensional motion;Tomography;Velocity;Wave Propagation;Wave velocity
Date:	2016-06-01
Issue Date:	2026-04-23 11:44:55 (UTC+8)
Publisher:	Chinese Geoscience Union;Taiwan: 中華民國地球科學學會
Abstract:	摘要： This study used the results from 45 microtremor array measurements to construct a shallow shear wave velocity structure in the western plain of Taiwan. We constructed a complete 3D velocity model based on shallow and tomography models for our numerical simulation. There are three major subsurfaces, engineering bedrock (VS = 600 m s-1), Pliocene formation and Miocene formation, constituted in the shallow model. The constant velocity is given in each subsurface. We employed a 3D-FD (finite-differences) method to simulate seismic wave propagation in the western plain. The aim of this study was to perform a quantitative comparison of site amplifications and durations obtained from empirical data and numerical modelling in order to obtain the shallow substructure soil response. Modelling clearly revealed that the shallow substructure plays an important role in strong ground motion prediction using 3D simulation. The results show significant improvements in effective shaking duration and the peak ground velocity (PGV) distribution in terms of the accuracy achieved by our developed model. We recommend a high-resolution shallow substructure as an essential component in future seismic hazard analyses. 出版者： Taiwan: 中華民國地球科學學會出版日期： 2016-06-01 出處： TAO : Terrestrial, atmospheric, and oceanic sciences, 2016-06, Vol.27 (3), p.359-373 資源來源：華藝電子期刊(CEPS) 版權： 2016. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. 識別號： ISSN: 1017-0839 識別號： ISSN: 2223-8964 識別號： ISSN: 2311-7680 識別號： EISSN: 2311-7680 識別號： EISSN: 1017-0839 識別號： DOI: 10.3319/TAO.2016.01.06.01(TEM)
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