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• W2967563485 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2019Ground motion from small aftershocks of 2014 Mw 6.2 Jinggu earthquake at short hypocentral distances in Yunnan, ChinaAuthors: Mengyao SunHuiyu ZhuJie ZhangHaohuan FuXiao TianMengyao SunTsinghua University and National Supercomputing Center in WuxiSearch for more papers by this author, Huiyu ZhuUniversity of Science and Technology of China (USTC)Search for more papers by this author, Jie ZhangUniversity of Science and Technology of China (USTC)Search for more papers by this author, Haohuan FuTsinghua University and National Supercomputing Center in WuxiSearch for more papers by this author, and Xiao TianEast China University of TechnologySearch for more papers by this authorhttps://doi.org/10.1190/segam2019-3215453.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractSeismic hazard of aftershocks is evaluated using the ground motion amplitudes from aftershocks of 2014 Mw 6.2 Jinggu earthquake in Yunnan province of China. We assess the site condition and develop the ground-motion prediction equations (GMPEs) of this region. The strong duration is also calculated to further understand the potential seismic hazard to nearby structures. The dataset includes over 500 events of Mw 1.5-4.0, more than 2,500 three-component records at hypocentral distances less than 45 km from 11 stations which are operated by Earthquake Administration of Yunnan Province. The ground motion amplification derived from the horizontal-to-vertical (H/V) spectral ratio of each station ranges from 1.1 to 4.6. The time-average shear-wave velocity to 30 depth (VS30) for stations is estimated using fundamental frequencies associated with peak H/V ratios. GMPEs are obtained by regression based on the entire dataset. The values of geometrical spreading coefficients in GMPEs for peak ground velocity (PGV), peak ground acceleration (PGA), and response spectral acceleration (PSA) at frequencies 3.3 Hz and 5 Hz are close and higher than those for PSA at frequencies 1 Hz and 2 Hz. Significant duration (DS) of strong ground motion is calculated, and it suggests that DS systematically decreases with PGA. However, no strong correlation is observed regarding hypocentral distance, magnitude, and VS30.Presentation Date: Tuesday, September 17, 2019Session Start Time: 1:50 PMPresentation Start Time: 2:40 PMLocation: Poster Station 3Presentation Type: PosterKeywords: earthquake, amplitude, riskPermalink: https://doi.org/10.1190/segam2019-3215453.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2019ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2019 Pages: 5407 publication data© 2019 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Aug 2019 CITATION INFORMATION Mengyao Sun, Huiyu Zhu, Jie Zhang, Haohuan Fu, and Xiao Tian, (2019), Ground motion from small aftershocks of 2014 Mw 6.2 Jinggu earthquake at short hypocentral distances in Yunnan, China, SEG Technical Program Expanded Abstracts : 3131-3135. https://doi.org/10.1190/segam2019-3215453.1 Plain-Language Summary KeywordsearthquakeamplituderiskPDF DownloadLoading ..." @default.
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• W2967563485 title "Ground motion from small aftershocks of 2014 Mw 6.2 Jinggu earthquake at short hypocentral distances in Yunnan, China" @default.
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