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A New Method of Computing the Transient Response of a Dielectric Square Cylinder
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作者 Yu Wenhua (Res,Inst. of EM field and Microwave tech,Soulhwest Jiaotong University) Chengdu 6 1 003 1, ChinaPeng Zhongqiu (Beijing Remote Sensing and In formation Institute)Beijng1 0001 1,ChinaRen Lang (Res.Inst of EM field and Microwave tech,Southwest 《Journal of Modern Transportation》 1995年第2期187-191,共5页
The vulume intesral equation and Fourier transform are applied to solve thetransient response of a dielectric square cylinder. if the dielectric square cylinderis only two-dimensional inhoniogeneous and the source is ... The vulume intesral equation and Fourier transform are applied to solve thetransient response of a dielectric square cylinder. if the dielectric square cylinderis only two-dimensional inhoniogeneous and the source is three-dimensional,Fourier transformation is used to reduce the three-dimensional source into thesuperposition of two diniensional source. 展开更多
关键词 transient scattering fourier transform. dielectric square cylinder
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Analysis of Dynamic Characteristics of Crustal Horizontal Deformation in the South Segment of Longmenshan Fault Zone Revealed by GPS Data after the Wenchuan Earthquake
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作者 Xiong Xiaohui Jiang Zaisen +2 位作者 Wu Yanqiang Wang Qixin Li Shengle 《Earthquake Research in China》 CSCD 2016年第1期43-56,共14页
In order to obtain deformation parameters in the south segment of Longmenshan fault zone,Euler datum transformation and the least square collocation for data interpolation and smoothing are used to process GPS displac... In order to obtain deformation parameters in the south segment of Longmenshan fault zone,Euler datum transformation and the least square collocation for data interpolation and smoothing are used to process GPS displacement time series data in the south segment of Longmenshan fault zone,and the rigid and elastic-plastic block motion model is used to calculate the strain parameters in each subarea. Conjoint analysis of displacement,velocity of each station and strain parameters of each subarea reveals that the influence of the Wenchuan earthquake on the south segment of Longmenshan fault zone increases from southeast to northwest,causing a highest deformation rate 6 times the background value and heightening the influence of the hidden faults on the difference of the earth surface along its two sides,which leads to the seismic risk of the southern segment increasing from north to south. The comparison of seismic risk among subareas based on the tectonic and seismicity background indicates that the most dangerous area is on the southeast of Longmenshan faults,and the background strain accumulation and the promoting effect of the Wenchuan earthquake advanced the occurrence of Lushan earthquake and the sinistral strike-slip on the rupture plane. The Wenchuan earthquake also caused a slight two-year long continuous strain release in the south segment of Xianshuihe fault,but the influence is far less than the effect of the compressive strain caused by the Sichuan-Yunnan block. 展开更多
关键词 South segment of Longmenshan fault zone the Wenchuan earthquake GPStime series The Least square Collocation Euler transform Strainparameters Lushan earthquake
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