�ϲ�λ������ĵر������仯�����о�   总被引：10，自引：8，他引：2  

谈洪波  申重阳  李辉 《大地测量与地球动力学》2008,28(4):54-62

??????????????????????????????????ζ??λ??????????????仯????????о????????????????????????????????仯???????????????1)??1??????????????????仯?У??????仯?????????????仯????λ??仯?????????С???????????????????С?????????????????仯?????????2?????????????????Σ??????????????????????仯???????????λ??????????????????????????????仯????????????????????????????????????仯???????????  相似文献   

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李敏锋  伍吉仓 《大地测量与地球动力学》2008,28(3):67-71

???t??????????????о????λ?????????????????????????????????????,???λ?????????????λ????????λ?????????????????????????????λ?????????????????????????Χ??????????????????  相似文献   

��ؿ��嶫��Ե���ڵؿ�ˮƽ�˶���Ӧ�����   总被引：4，自引：2，他引：2  

张希  张晓亮  王双绪  蒋锋云 《大地测量与地球动力学》2008,28(4):12-16

?????????嶫???2001??2004??2004??2007??GPS????????????????????λ???????о??????????????????????????????????????????????????????????????????????????????2004??2007???????嶫??????巴????????????μ???????????????????????????????????2001??2004??????????????????????С????Ρ??????????μ??????顢?????????2001??2004????????????????????????????????Ρ?????′??????????????????  相似文献   

Non-riemannian and fractal geometries of fracturing in geomaterials     

H. Nagahama 《International Journal of Earth Sciences》1996,85(1):96-102

The mechanism of earthquakes is presented by use of the elastic dislocation theory. With consideration of the continuous dislocation field, the general problem of medium deformation requires analysis based on non-Riemannian geometry with the concept of the continuum with a discontinuity (no-more continuum). Here we derive the equilibrium equation (Navier equation) for the continuous dislocation field by introducing the relation between the concepts of the continuous dislocation theory and non-Riemannian geometry. This equation is a generalization of the Laplace equation, which can describe fractal processes like diffusion limited aggregation (DLA) and dielectric breakdown (1313). Moreover, the kinematic compatibility equations derived from Navier equation are the Laplace equations and the solution of Navier equation can be put in terms of functions which satisfy the biharmonic equation, suggesting a close formal connection with fractal processes. Therefore, the relationship between the non-Riemannian geometry and the fractal geometry of fracturing (damage) in geomaterials as earthquakes can be understood by using the Navier equation. Moreover, the continuous dislocation theory can be applied to the problem of the earthquake formation with active folding related with faulting (active flexural-slip folding related to the continuous dislocation field).  相似文献   

Deformation of the Japanese Islands and seismic coupling: an interpretation based on GSI permanent GPS observations   总被引：2，自引：0，他引：2  

Xavier Le Pichon  Stéphane Mazzotti  Pierre Henry  & Manabu Hashimoto 《Geophysical Journal International》1998,134(2):501-514

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活动断层运动的重力场反演     

向文  李辉 《大地测量与地球动力学》2000,20(3):11-16

阐述了断层错动引起地表重力变化的基本原理 ,给出了弹性半无限空间点源位错到矩形位错引起的重力变化的基本解析式 ,并将结论推广到多个断层。介绍了利用重力变化反演断层运动的基本思路。以滇西实验场作为应用实例 ,对 1996年 2月丽江 7.1级地震发生前后场区内的活动断层运动进行了演算 ,给出了断层位移解 ,并与已有资料相比较 ,结果基本一致 ,但误差分析结果表明本文位错模型还有待于改善。  相似文献   

����������ڵؿ��˶���Ӧ�����   总被引：8，自引：8，他引：0  

张希  张四新  王双绪  张晓亮  陆明勇  王文萍 《大地测量与地球动力学》2007,27(4):8-15

????1994??2006???????GPS????????????????????????????縺λ???????????????????α????????????о???????????????弰??????????????????????????????????:??????????????????????????????????????;?????????????????????????????????????????-??????鼰??????????????????????????????????????-????????????????  相似文献   

Deformations caused by the movements of shear and tensile faults     

Guang Y. Sheu 《国际地质力学数值与分析法杂志》2001,25(12):1175-1193

Earlier solutions of deformations resulting from the movements of shear and tensile faults in a half space (Bull. Seismol. Soc. Amer. 1985; 75 :1135, 1992; 82 :1018) have been revised in view of cross‐anisotropic stress–strain relationships. The dislocation theory (Canad. J. Phys. 1958; 36 :192) is reviewed and the displacement field due to a concentrated force in an anisotropic half space is solved analytically for developing the current research. A fault is simulated as a point source of strain nuclei in applying the dislocation theory. Data (Terr. Atmos. Oceanic Sci. 2000; 11 (3):591, 631) that were used to study the Chi‐Chi earthquake (M_L=7.3; 1999/9/21 AM 1:47) are introduced to compare the solution with the isotropic results. Results indicate that the anisotropy of stress–strain relationships does affect the results of predicted deformations. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   

Investigation of the Co-seismic Gravity Field Variations Caused by the 2004 Sumatra-Andaman Earthquake Using Monthly GRACE Data     

李进  申文斌 《中国地质大学学报(英文版)》2011,(2)

Gravity Recovery and Climate Experiment(GRACE) observations have been used to de-tect the co-seismic and post-seismic gravity field variations due to the Mw=9.3 Sumatra-Andaman earthquake that occurred on December 26,2004.This article focuses on investigating some gravita-tional effects caused by this huge earthquake.We computed the geoid height changes,the equivalent water height(EWH) changes,and the gravity changes using the GRACE Level-2 monthly spherical harmonic(SH) solutions released by University of ...  相似文献   

A new method for the computation of global viscoelastic post-seismic deformation in a realistic earth model (II)-horizontal displacement   总被引：1，自引：0，他引：1  

Y. Tanaka  J. Okuno  S. Okubo 《Geophysical Journal International》2007,170(3):1031-1052

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