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http://dx.doi.org/10.5467/JKESS.2020.41.3.238

Analysis of Intensity Attenuation Characteristics Using Physics-based Earthquake Ground-motion Simulation with Site Effect in the Southern Korean Peninsula  

An, So Hyeon (Department of Earth Science Education, Korea National University of Education)
Kyung, Jai Bok (Department of Earth Science Education, Korea National University of Education)
Song, Seok Goo (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Cho, Hyung-Ik (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Publication Information
Journal of the Korean earth science society / v.41, no.3, 2020 , pp. 238-247 More about this Journal
Abstract
This study simulated strong ground motion waveforms in the southern Korean Peninsula, based on the physical earthquake modeling of the Southern California Earthquake Center (SCEC) BroadBand Platform (BBP). Characteristics of intensity attenuation were investigated for M 6.0-7.0 events, incorporating the site effects. The SCEC BBP is software generates broadband (0-10 Hz) ground-motion waveforms for earthquake scenarios. Among five available modeling methods in the v16.5 platform, we used the Song Model. Approximately 50 earthquake scenarios each were simulated for M 6.0, 6.5, and 7.0 events. Representative metrics such as peak ground acceleration (PGA) and peak ground velocity (PGV) were obtained from the synthetic waveforms that were simulated before and after the consideration of site effects (VS30). They were then empirically converted to distribution of instrumental intensity. The intensity that considers the site effects is amplified at low rather than high VS30 zones.
Keywords
Korean Peninsula; intensity attenuation; physical earthquake modeling; site effect; $V_{S30}$;
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Times Cited By KSCI : 3  (Citation Analysis)
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