Parameter inversion of the 1997 mani earthquake from insar co-seismic deformation field based on linear elastic dislocation model - i. uniform slip inversion
文献类型：期刊论文
| 作者 | Sun Jian-Bao; Xu Xi-wei; Shen Zheng-Kang; Shi Yao-Lin; Liang Fang |
| 刊名 | Chinese journal of geophysics-chinese edition
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 50期号:4页码:1097-1110 |
| 关键词 | Mani earthquake Sar interferometry Co-seismic deformation Linear elasticity Uniform slip inversion Distributed slip inversion |
| ISSN号 | 0001-5733 |
| 通讯作者 | Sun jian-bao(suninsar@yahoo.com) |
| 英文摘要 | The nov. 8, 1997 mani (xizang) mw7.5 earthquake is an important event since synthetic aperture radar lnterferometry was used for earthquake studies. peltzer et al argued that the deformation field indicated the nonlinear elastic response of crust with a ratio of 2 between compressive and tensile elastic moduli. no other similar case appeared in co-seismic deformation field. generally, linear elastic theory can give satisfactory explanation to the observation. considering their excessively simplified fault model and the pure strike-slip assumption, we deem that nonlinear elasticity explanation is far-fetched. by using the widely-used okada linear elastic dislocation model and the fault location on the surface from satellite observations, removing the zero dip-slip constraint, we seek best-fit fault geometry parameters and uniform slip vectors from radar observation based on nonlinear optimization inversion. the result shows that linear elastic model can satisfactorily explain the observation. the maximum depth of the fault reaches 16.5 km at the segment near the east side of chaoyang lake. the depth decreases gradually when the fault extending to the east and the west; inverted fault dipping direction and dip-slip are consistent with field investigation; the maximum strike-slip component reaches 4.44 m, and the dip-slip component also reaches its maximum 1.1 m at this segment, which can not be ignored in the inversion; the total seismic moment is 2.08 x 10(20) n . m from inversion, which equals to a mw7.5 earthquake. the seismic moment is close to the 2.23 x 10(20) n . m of harvard solution and the 1.8 x 10(20) n . m of velasco's inversion. |
| WOS关键词 | RADAR INTERFEROMETRY ; KUNLUN FAULT ; DISPLACEMENT FIELD ; HECTOR MINE ; SURFACE ; CHINA ; TIBET ; CALIFORNIA ; SPACE ; GPS |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000248343500017 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2383558 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Sun Jian-Bao |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Sch Earth Sci, Beijing 100049, Peoples R China 2.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Beijing Earthquake Adm, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun Jian-Bao,Xu Xi-wei,Shen Zheng-Kang,et al. Parameter inversion of the 1997 mani earthquake from insar co-seismic deformation field based on linear elastic dislocation model - i. uniform slip inversion[J]. Chinese journal of geophysics-chinese edition,2007,50(4):1097-1110. |
| APA | Sun Jian-Bao,Xu Xi-wei,Shen Zheng-Kang,Shi Yao-Lin,&Liang Fang.(2007).Parameter inversion of the 1997 mani earthquake from insar co-seismic deformation field based on linear elastic dislocation model - i. uniform slip inversion.Chinese journal of geophysics-chinese edition,50(4),1097-1110. |
| MLA | Sun Jian-Bao,et al."Parameter inversion of the 1997 mani earthquake from insar co-seismic deformation field based on linear elastic dislocation model - i. uniform slip inversion".Chinese journal of geophysics-chinese edition 50.4(2007):1097-1110. |
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来源：中国科学院大学
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