Three-Dimensional Seismic-Wave Propagation Simulations in the Southern Korean Peninsula Using Pseudodynamic Rupture Models
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jaeseok | - |
dc.contributor.author | Song, Jung-Hun | - |
dc.contributor.author | Kim, Seongryong | - |
dc.contributor.author | Rhie, Junkee | - |
dc.contributor.author | Song, Seok Goo | - |
dc.date.accessioned | 2022-05-09T12:41:58Z | - |
dc.date.available | 2022-05-09T12:41:58Z | - |
dc.date.created | 2022-05-09 | - |
dc.date.issued | 2022-04 | - |
dc.identifier.issn | 0037-1106 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/140831 | - |
dc.description.abstract | Accurate and practical ground-motion predictions for potential large earthquakes are crucial for seismic hazard analysis of areas with insufficient instrumental data. Studies on historical earthquake records of the Korean Peninsula suggest that damaging earthquakes are possible in the southeastern region. Yet classical ground-motion prediction methods are limited in considering the physical rupture process and its effects on ground motion in complex velocity structures. In this study, we performed ground-motion simulations based on rigorous physics through pseudodynamic source modeling and wave propagation simulations in a 3D seismic velocity model. Ensembles of earthquake scenarios were generated by emulating the one- and two-point statistics of earthquake source parameters derived from a series of dynamic rupture models. The synthetic seismograms and the distributions of simulated peak ground velocities (PGVs) were compared with the observations of the 2016 Mw 5.4 Gyeongju earthquake in the Korean Peninsula. The effects of surface-wave radiation, rupture directivity, and both local and regional amplifications from the 3D wave propagation were reproduced accurately in the spatial distribution of simulated PGVs, in agreement with the observations from dense seismic networks by mean log residuals of -0.28 and standard deviations of 0.78. Amplifications in ground motions were found in regions having low crustal velocities and in regions of constructive interference from the crustal shear-wave phases associated with postcritical reflections from the Moho discontinuity. We extended the established approach to earthquake scenarios of Mw 6.0, 6.5, and 7.0, at the same location, to provide the distribution of ground motions from potential large earthquakes in the area. Although we demonstrate the value of these simulations, improvements in the accuracy of the 3D seismic velocity model and the scaling relationship of the source models would be necessary for a more accurate estimation of near-source ground motions. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SEISMOLOGICAL SOC AMER | - |
dc.subject | GROUND-MOTION PREDICTION | - |
dc.subject | MOHO REFLECTIONS SMS | - |
dc.subject | LOS-ANGELES BASIN | - |
dc.subject | LONG-PERIOD | - |
dc.subject | SCENARIO EARTHQUAKES | - |
dc.subject | HAZARD ANALYSIS | - |
dc.subject | 2016 GYEONGJU | - |
dc.subject | MAGNITUDE | - |
dc.subject | EQUATIONS | - |
dc.subject | AMPLIFICATION | - |
dc.title | Three-Dimensional Seismic-Wave Propagation Simulations in the Southern Korean Peninsula Using Pseudodynamic Rupture Models | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Seongryong | - |
dc.identifier.doi | 10.1785/0120210172 | - |
dc.identifier.scopusid | 2-s2.0-85130641940 | - |
dc.identifier.wosid | 000778494400005 | - |
dc.identifier.bibliographicCitation | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, v.112, no.2, pp.939 - 960 | - |
dc.relation.isPartOf | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA | - |
dc.citation.title | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA | - |
dc.citation.volume | 112 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 939 | - |
dc.citation.endPage | 960 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geochemistry & Geophysics | - |
dc.relation.journalWebOfScienceCategory | Geochemistry & Geophysics | - |
dc.subject.keywordPlus | GROUND-MOTION PREDICTION | - |
dc.subject.keywordPlus | MOHO REFLECTIONS SMS | - |
dc.subject.keywordPlus | LOS-ANGELES BASIN | - |
dc.subject.keywordPlus | LONG-PERIOD | - |
dc.subject.keywordPlus | SCENARIO EARTHQUAKES | - |
dc.subject.keywordPlus | HAZARD ANALYSIS | - |
dc.subject.keywordPlus | 2016 GYEONGJU | - |
dc.subject.keywordPlus | MAGNITUDE | - |
dc.subject.keywordPlus | EQUATIONS | - |
dc.subject.keywordPlus | AMPLIFICATION | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.