Strong ground motion synthesis along the Sanyi-Tungshih-Puli seismic zone using empirical Green`s functions
Conference
·
OSTI ID:470861
- Lawrence Livermore National Lab., CA (United States)
- State Univ. of New York, Buffalo, NY (United States). Dept. of Geological Sciences
- Academia Sinica, Taipei (Taiwan, Province of China). Inst. of Earth Sciences
- California Univ., Santa Barbara, CA (United States). Inst. for Crustal Studies
We synthesize strong ground motion from a M=7.25 earthquake along the NW-trending Sanyi-Tungshih-Puli seismic zone. This trend extends from Houlong to Taichung and forms a nearly continuous 78 km long seismic zone identified by the occurrence of M<5 events. It extends from a shallow depth all the way down to about 40 km. The entire length of the fault, if activated at one time, can lead to an event comparable to that the 1995 Kobe earthquake. With the improved digital CWBSN data now provided routinely by CWBSN, it becomes possible to use these data as empirical Green`s functions to synthesize potential ground motion for future large earthquakes. We developed a suite of 100 rupture scenarios for the earthquake and computed the commensurate strong ground motion time histories. We synthesized strong ground motion with physics-based solutions of earthquake rupture and applied physical bounds on rupture parameters. the synthesized ground motions obtained for a fixed magnitude and identifying the hazard to a site from the statistical distribution of engineering parameters, we have introduced a probabilistic component to the deterministic hazard calculation, The time histories suggested for engineering design are the ones that most closely match either the average or one standard deviation absolute acceleration response values.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 470861
- Report Number(s):
- UCRL-JC--126351; CONF-970378--1; ON: DE97052116
- Country of Publication:
- United States
- Language:
- English
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