Dynamic Rupture Modeling of the 1999 Chi-Chi, Taiwan Earthquake Using 3DFinite Element Method. Sensitivity Analysis of Slip Rate Function to Model Parameters of Crustal Weak-Zone

Technical Report · Tue Feb 01 00:00:00 EST 2022

DOI:https://doi.org/10.2172/1845214· OSTI ID:1845214

Pitarka, Arben ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The main objective of this study was the dynamic rupture modeling of the M7.3 1999 Chi-Chi, Taiwan earthquake. The purpose of the numerical modeling was two folded. First, using models of rupture dynamics, derive kinematic rupture characteristics, including spatial and temporal variations of the slip rate time history and rupture speed, in the long-period ground motion generation area (LMGA), strong motion generation areas (SMGAs) and background fault area for a thrust shallow rupture. Second, investigate the sensitivity of source time function characteristics in the LMGA and SMGA areas to model parameterization of low-velocity weak zone, such as thickness and shear wave velocity.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); Georesearch Institute
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1845214
• Report Number(s): LLNL-TR-831793; 1048995
• Country of Publication: United States
• Language: English

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