{"title":"2016 年 6.8 级 Chauk 地震的宽带地面运动模拟","authors":"Jahnabi Basu, S. T. G. Raghukanth","doi":"10.1007/s00024-024-03475-3","DOIUrl":null,"url":null,"abstract":"<div><p>The 2016 M<sub>w</sub> 6.8 Chauk, Myanmar earthquake was one of the largest earthquakes in Myanmar, leading to significant damage to historical monuments and the first earthquake to occur in the instrumental era. In the current study, broadband (0.01–25 Hz) ground motions are simulated in the 4.5° × 4.5° region around the epicenter to investigate the ground-motion characteristics of the event. Towards this goal, deterministically generated low-frequency and stochastically simulated high-frequency ground motions are combined to create three-component broadband seismograms. The simulated ground motions are further compared with the available strong motion data recorded in the near-field and far-field stations. Thus, the efficacy in modeling the ground motions is quantified through the estimation of the goodness of fit between the 5% damped acceleration response spectra obtained from recorded and simulated ground motions. Furthermore, the peak ground acceleration (PGA) of the simulated ground motions for the entire region is presented in the form of a contour map along with its spatial variation with the region's topography. The simulated PGA is further compared with the global ground motion models developed for subduction zone intraslab earthquakes. Most importantly, acceleration time histories are generated at the locations of severely damaged monuments in Bagan and Nyuang-U city, which can further be utilized for nonlinear dynamic analysis of the structures.</p></div>","PeriodicalId":21078,"journal":{"name":"pure and applied geophysics","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simulation of Broadband Ground Motions for the 2016 Mw 6.8 Chauk Earthquake\",\"authors\":\"Jahnabi Basu, S. T. G. Raghukanth\",\"doi\":\"10.1007/s00024-024-03475-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The 2016 M<sub>w</sub> 6.8 Chauk, Myanmar earthquake was one of the largest earthquakes in Myanmar, leading to significant damage to historical monuments and the first earthquake to occur in the instrumental era. In the current study, broadband (0.01–25 Hz) ground motions are simulated in the 4.5° × 4.5° region around the epicenter to investigate the ground-motion characteristics of the event. Towards this goal, deterministically generated low-frequency and stochastically simulated high-frequency ground motions are combined to create three-component broadband seismograms. The simulated ground motions are further compared with the available strong motion data recorded in the near-field and far-field stations. Thus, the efficacy in modeling the ground motions is quantified through the estimation of the goodness of fit between the 5% damped acceleration response spectra obtained from recorded and simulated ground motions. Furthermore, the peak ground acceleration (PGA) of the simulated ground motions for the entire region is presented in the form of a contour map along with its spatial variation with the region's topography. The simulated PGA is further compared with the global ground motion models developed for subduction zone intraslab earthquakes. Most importantly, acceleration time histories are generated at the locations of severely damaged monuments in Bagan and Nyuang-U city, which can further be utilized for nonlinear dynamic analysis of the structures.</p></div>\",\"PeriodicalId\":21078,\"journal\":{\"name\":\"pure and applied geophysics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-04-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"pure and applied geophysics\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00024-024-03475-3\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"pure and applied geophysics","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s00024-024-03475-3","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Simulation of Broadband Ground Motions for the 2016 Mw 6.8 Chauk Earthquake
The 2016 Mw 6.8 Chauk, Myanmar earthquake was one of the largest earthquakes in Myanmar, leading to significant damage to historical monuments and the first earthquake to occur in the instrumental era. In the current study, broadband (0.01–25 Hz) ground motions are simulated in the 4.5° × 4.5° region around the epicenter to investigate the ground-motion characteristics of the event. Towards this goal, deterministically generated low-frequency and stochastically simulated high-frequency ground motions are combined to create three-component broadband seismograms. The simulated ground motions are further compared with the available strong motion data recorded in the near-field and far-field stations. Thus, the efficacy in modeling the ground motions is quantified through the estimation of the goodness of fit between the 5% damped acceleration response spectra obtained from recorded and simulated ground motions. Furthermore, the peak ground acceleration (PGA) of the simulated ground motions for the entire region is presented in the form of a contour map along with its spatial variation with the region's topography. The simulated PGA is further compared with the global ground motion models developed for subduction zone intraslab earthquakes. Most importantly, acceleration time histories are generated at the locations of severely damaged monuments in Bagan and Nyuang-U city, which can further be utilized for nonlinear dynamic analysis of the structures.
期刊介绍:
pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys.
Long running journal, founded in 1939 as Geofisica pura e applicata
Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences
Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research
Coverage extends to research topics in oceanic sciences
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