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《Chinese Journal of Geophysics》 2017-02
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Statistical tests of seismic intensity ratings in China

PAN Yue-Yi;YU Yan-Xiang;XIAO Liang;Institute of Geophysics,China Earthquake Administration;Earthquake Administration of Guangxi Zhuang Autonomous Region;  
In order to investigate whether there is a temporal variability trend of seismic intensity ratings in China, plenty of the isoseismal lines are analyzed in detail. This work selects the appropriate intensity attenuation as a standard, and then makes a statistical analysis on the temporal trends of earthquake intensity ratings of 392 seismic events in China during 1900-2013.The research is based on the principle of residual analysis. We propose an improved algorithm in this context that permits not only to quantify the deviations but also to illustrate the dispersion degrees of data directly. The results of statistical analysis show that the intensity ratings change with time dramatically. What's more, when intensity ratings divide by region, by magnitude and by intensity, the temporal trends are the same as whole data: before 1960, intensity ratings were relatively discrete; in the 1960—1980 periods, there was a decreasing trend in the intensity ratings,and an increasing trend since 1980. Furthermore, it is worth noting that most of intensity ratings are above average since 2000. Intensity ratings were significantly higher at this time, whose overall average is around 0.4 degrees on the high side, and have a tendency to continue to increase.
【Fund】: 国家科技支撑计划课题(2012BAK15BO1 2015BAK18B01);; 全国地震区划图编制项目共同资助
【CateGory Index】: P315
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【Citations】
Chinese Journal Full-text Database 6 Hits
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【Co-citations】
Chinese Journal Full-text Database 9 Hits
1 HU Wang;ZHANG Jian;CHEN Wei-feng;HU Bin;GUO Hong-mei;School of Computer Science and Engineering, University of Electronic Science and Technology of China;Sichuan Earthquake Administration;;Research on Fusion Model of Seismic Intensity Attenuation Based on Neural Network[J];电子科技大学学报;2018-02
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3 HOU BenWei;LI XiaoJun;HAN Qiang;LIU AiWen;DU XiuLi;Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology;Institute of Geophysics,China Earthquake Administration;;Seismic retrofit priority assessment of highway networks based on multi-indices analysis[J];中国科学:技术科学;2018-02
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8 YANG Bai-Cun;QIN Si-Qing;XUE Lei;WU Xiao-Wa;ZHANG Ke;Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;Institutions of Earth Science,Chinese Academy of Sciences;Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology;;Seismic hazard assessment in the Xiongan New Area[J];地球物理学报;2017-12
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