| 滇西南地区品质因子、场地反应与震源参数研究 |
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| 引用本文： | 刘奥懿,荣棉水,李小军,王宏伟,卢滔,傅磊.滇西南地区品质因子、场地反应与震源参数研究[J].震灾防御技术,2022,17(3):454-463. |
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| 作者姓名： | 刘奥懿 荣棉水 李小军 王宏伟 卢滔 傅磊 |
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| 作者单位： | 1.防灾科技学院, 河北三河 065201 |
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| 基金项目： | 国家自然科学基金项目（51878625）；国家自然科学基金（52192675） |
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| 摘 要： |
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| 关 键 词： | 滇西南地区 非参数广义反演 品质因子 场地反应 震源参数 |
| 收稿时间： | 2022-05-15 |
Study on Quality Factor,Site Effect and Source Parameter in Southwest Yunnan |
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| Liu Aoyi,Rong Mianshui,Li Xiaojun,Wang Hongwei,Lu Tao,Fu Lei.Study on Quality Factor,Site Effect and Source Parameter in Southwest Yunnan[J].Technology for Earthquake Disaster Prevention,2022,17(3):454-463. |
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| Authors: | Liu Aoyi Rong Mianshui Li Xiaojun Wang Hongwei Lu Tao Fu Lei |
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| Institution: | 1.Institute of Disaster Prevention, Sanhe 065201, Hebei , China2.Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China3.Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China4.Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | In order to deeply understand the characteristics of influence factors of ground motion in Southwest Yunnan, and better serve the related research of seismic fortification and earthquake prediction in the target area, 242 groups of three-component strong earthquake recordings in Southwest Yunnan from 2007 to 2019 were analyzed by using the two-step non-parametric generalized inversion method. By separating and solving the ground motions observed on the surface in frequency domain, the empirical relationship of the quality factors of 0.5 ~ 20 Hz in this area was given, and the site effect of 26 strong earthquake stations in the study frequency band were obtained, which were compared with the HVSR results. Based on the grid search method, the seismic moment M0, corner frequency fc and source model parameters of 35 seismic events are determined, and the calibration relationship among some source parameters is obtained by fitting. The results show that the relationship between Q value and frequency of quality factor in Southwest Yunnan is Q=94.23f 0.43. Compared with HVSR method, the site response determined by non-parametric generalized inversion method is generally higher, but the site effect spectra obtained by the two methods are consistent. The source parameters such as corner frequency, seismic moment and stress drop are mutually dependent. |
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| Keywords: | Southwest Yunnan Non-parametric Generalized Inversion Q value Site effect Source parameters |
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