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1. Issues in stochastic modeling of ground motions based on analytical phase spectrum | |||
ZENG Cheng,SUN Xiaodan,LI Yongheng | |||
Earth Science 25 May 2016 | |||
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Abstract:In this paper, stochastic modeling technique based on analytical phase spectrum was studied. The analytical displacement response to a shear dislocation source in infinite homogeneous space was used to extract analytical phase spectrum. The analytical phase spectrum was used to replace the random phase spectrum so that the spectrum of the simulated motion is related to the property of propagation medium and the source-site geometry. Two issues, the simplification of numerical integration and the computation of sub-source rise time, were discussed. The results show that: when the sub-source size is smaller than 1km, the numerical integration could be simplified by multiplying the sub-source area to the displacement from point dislocation source; unreasonable sub-source rise time may be deduced if letting sub-source rise time propotional to sub-source dislocation.The approach was validated using the observed data of the 1994 Northridge earthquake. The validation shows a good match between the simulated and observed data in terms of waveform and response spectrum. | |||
TO cite this article:ZENG Cheng,SUN Xiaodan,LI Yongheng. Issues in stochastic modeling of ground motions based on analytical phase spectrum[OL].[25 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4693864 |
2. The mechanism of seismo-magnetic anomaly before the earthquake and its role in earthquake prediction | |||
Chu Qingzhong,Li Hui,Wu Ze,Liang Wubin,Chen Xiaozhe,Shi Peibing | |||
Earth Science 25 September 2014 | |||
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Abstract:In this paper introduces three aspects of content: cause of earthquake; magnetic anomaly analysis before the earthquake; the relationship of magnetic anomaly and earthquake magnitude. Through the research of WenChuan earthquake, introduce seismo-magnetic anomaly detailedly. This paper also introduces the application of wavelet analysis in interference rejection and Date Processing, provides effective method for seismo-magnetic observation. | |||
TO cite this article:Chu Qingzhong,Li Hui,Wu Ze, et al. The mechanism of seismo-magnetic anomaly before the earthquake and its role in earthquake prediction[OL].[25 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4609376 |
3. Using GIS to Perform Seismic Hazard Analysis | |||
ZHANG Baoyi | |||
Earth Science 10 April 2006 | |||
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Abstract:The main characteristics of GIS, general procedures of probabilistic seismic hazard analysis and the method to realize them on MapGIS are described. A computerized application on an engineering site in the Three Gorges Dam District is presented. The graphical user interface introduced by GIS enables to handle PSHA software routines and data in a more intuitive way. Moreover, it improves the user’s capacity of cognizing the complex PSHA processing, and helps user to explore the knowledge of PSHA from geo-data. | |||
TO cite this article:ZHANG Baoyi. Using GIS to Perform Seismic Hazard Analysis[J]. |
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