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Comparison of strong-motion records and damage implications between the 2014 Yunnan M_S6.5 Ludian earthquake and M_S6.6 jinggu earthquake

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earthquake Science 2018年第1期31卷 12-18页

作者： Peibin Xu Ruizhi Wen Yefei Ren Institute of Engineering Mechanics China Earthquake Administration

Serial destructive earthquakes have caused heavy casualties and economic losses to the city in southwestern of China. The Ludian Ms 6.5 earthquake and the jinggu Ms 6.6 earthquake occurred in Yunnan province in 2014. There is a question of why the two events with almost the same level of magnitude caused differences in earthquake damage. To understand the uniqueness of the phenomenon, this paper focuses on the characteristics of the ground motions and post-earthquake field investigation for the two events. Firstly, we present an overview of the residuals between the Ludian earthquake and the jinggu earthquake based on the YW06 Ground Motion Prediction Equation （GMPE）, and explain the unusual destructiveness of the strong ground motion. Then we analyze the ground motion recordings at selected typical station, based on the strong motion parameters： equivalent predominant frequency and Arias intensity. The result exhibits a good agreement with the Chinese seismic intensity scale. This study would be helpful to gain a better knowledge of the characteristics and variability of ground motions for Ms6 class earthquakes in China and to understand the implications to future earthquakes with similar focal mechanism and local condition.

关键词： Ludian earthquake jinggu earthquake ground motion prediction equation earthquake damage

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Population and housing grid spatialization in Yunnan Province based on grid sampling and application of rapid earthquake loss assessment:the jinggu Ms6. 6 earthquake

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Geodesy and Geodynamics 2014年第4期5卷 25-33页

作者： Ding Wenxiu Li Xiaoli Li Zhiqiang Dou aixia Zhang Yimei Temu Qile Key Laboratory of earthquake Geodesy Institute of SeismologyChina Earthquake Administration Institute of Geophysics & Geomatics China University of Geosciences Institute of Geology China Earthquake Administration Institute of earthquake Scinence China earthquake Administration

Population and housing grid data spatialization hased on 340 grid samples （ 1 kmx 1 kin） is used in- stead of regional statistical data to simulate the population and housing distribution data of Yunnan Province （ 1 km×1 kin） for rapid loss assessment ibr the jinggu Ms6.6 earthquake. The resuhs indicate that the method reflects the actual population and housing distribution and that the assessment results are eredihle. The method can be used to quickly provide spatial orientation disaster information after an earthquake.

关键词： population grid spatialization housing grid spatialization rapid earthquake loss assessment jinggu earthquake

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Characteristics of gravity fields in the jinggu M6. 6 earthquake

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Geodesy and Geodynamics 2014年第4期5卷 34-37页

作者： Sun Shaoan Hao Hongtao Wei Jin Key Laboratory of earthquake Geodesy Institute of SeismologyChina Earthquake Administration Wuhan Base of Institute of Crustal Dynamics China Earthquake Administration

Based on the study of high-precision gravity data obtained from recent studies and the regional gravi- ty network for Yunnan province, a variation in the regional gravity field was identified before the occurrence of ... 详细信息

关键词： jinggu earthquake gravity field evolution characteristics

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