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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2002.1
- 수록면
- 203 - 214 (12page)
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초록· 키워드
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Strong ground motions in southern Korea were sim-ulated using the stochastic method based on the Brune-source andfinite fault models. Input parameters such as Brune stres drop(Ds) and attenuation parameter k were newly estimated using therecent seismic data of years 1999 and 2000 in southern Korea. Theaverage Brune stres drop and the attenuation parameter k wereestimated to be 65-bar and 0.00516+0.000147R, respectively, where Ris the hypocenter distance in km unit. These values are verified bysimulation of ground motions based on the stochastic method forthe 06/02/1999 Gyeongju earthquake. With use of the parameters,strong ground motions in southern Korea were simulated forearthquakes of moment magnitude 5 to 8 using the stochasticmethod. Both the Brune source model and the finite-fault sourcemodel give similar results of simulations for moderate-sized earth-quakes. However, the difference between the results from thesetwo models becomes larger for larger earthquake magnitudes orfor smaller hypocenter distances. Results for the finite-fault modelshow azimuthal variations of ground motions around the fault.
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