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Meshing effects of the 3-D FEM numerical modeling in seismo-electromagnetics:An application in selectivity of seismic electric signal (SES): 2011年; We investigated how density and quality of mesh around interest domain affect electromagnetic （EM） responses of 3D Earth layered media using finite element method （FEM）. Effect of different mesh shapes was also investigated using a method of mixing structured and unstructured mesh. As a case study, we estimated the effects of meshing on selectivity phenomenon of seismic electric signal （SES）. Our results suggest that the relative errors resulting from mesh effects may not be negligible, which may lead to some unconvincing explanation of the SES selectivity based on the numerical modeling results.; Qiao Wang Guangjing Xu Zhanhui Li Qinghua Huang; 关键词：FEM MESHING SES

Anomalous behaviors of geomagnetic diurnal variations prior to the 2011 Tohoku earthquake (Mw9.0): <正>Many previous investigations suggested that the ultra-low-frequency (ULF, up to 30Hz) is a prospective band...; Guangjing XuPeng HanQinghua HuangKatsumi Hattori; 文献传递

基于概率完备震级分析方法评估首都圈地震台网检测能力: 1.引言地震台网为地震监测和防震减灾研究提供了必需的观测资料,其检测能力的好坏直接影响到相关研究结果的可信度。完备震级是国际上普遍采用的评估地震台网检测能力的一个定量标准,即地震台网能100%地检测到的地震的最小震级。最...; 李智超黄清华; 关键词：地震台网 PMC 首都圈; 文献传递

Seismicity changes of the 2011 M9.0 East Japan Great Earthquake revealed by the RTL algorithm: 1.Introduction On March 11 2011,an M9.0 earthquake occurred in the Miyagi prefecture,the northeastern area of ...; Xia Ding Qinghua Huang Department of Geophysics,School of Earth and Space Sciences,Peking University,Beijing 100871; 关键词：RTL; 文献传递

瞬变电磁正演之带激励源的三维曲线交错网格时域有限差分方法: 瞬变电磁法(TEM)是一种在勘探与工程地球物理等领域得到广泛应用的人工源电磁探测方法。20世纪90年代Wang和Hohmann关于TEM三维正演的研究己被当做经典正演方法而频繁使用。然而,实际TEM测量常在山区进行,地表...; 李展辉黄清华; 关键词：交错网格瞬变电磁激励源时域有限差分方法; 文献传递

On the precursory phenomena of the 2011 off the Pacific coast of Tohoku earthquake(Mw9.0):insight from GPS measurements and geomagnetic observations: <正>At present,using a unique physical model to qualitatively interpret an earthquake precursor is considerably...; Katsumi HattoriQinghua HuangPeng HanGuangjing XuFebty FebrianiHiroki Yamaguchi; 关键词：GPS; 文献传递

ULF seismo-electromagnetic studies in Kanto, Japan: <正>In order to clarify the ULF seismo-magnetic phenomena,a sensitive geomagnetic network has been installed in...; Peng HanKatsumi HattoriQinghua HuangFebty FebrianiHiroki YamaguchiChie Yoshino; 关键词：JAPAN; 文献传递

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国家自然科学基金(41025014)