Studying the viscosity of lower crust of qinghai-tibet plateau according to post-seismic deformation
文献类型：期刊论文
| 作者 | Zhang ChaoJun1; Cao JianLing2; Shi YaoLin2 |
| 刊名 | Science in china series d-earth sciences
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 52期号:3页码:411-419 |
| 关键词 | Rheological model Strain rate Rheological law Post-seismic deformation Viscosity |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-009-0028-9 |
| 通讯作者 | Zhang chaojun(zcj72@hotmail.com) |
| 英文摘要 | The viscosity of lower crust of qinghai-tibet plateau on earth should be determined. it has become a predominant problem in quantitative research on geodynamics. its order of magnitude will have a great influence on the results of quantitative modeling. to obtain the viscosity of lower crust of qinghai-tibet plateau, this parameter was calculated by three methods. the first is based on the estimation on the temperature state of qinghai-tibet plateau in the deep part, and the viscosity of lower crust of northern plateau was recomputed with strain rate derived from rheology law and gps observation. effective viscosity of middle crust in kunlun region is between 10(20) and 10(22) pa center dot s, and that of lower crust is between 10(19) and 10(21) pa center dot s; the second is based on three kinds of rheological models used to fit the post-seismic deformation recorded by cross-over fault gps sites set after m (s)8.1 kunlun earthquake in 2001. the viscosity of lower crust obtained by this method is of 10(17) pa center dot s order of magnitude. however, higher viscosity is required to fit the data of south fault better, and the lower one is required to fit the data of north fault better. the viscosity of lower crust, which was obtained by fitting the cross-over fault post-seismic deformation after m (s)7.6 luhuo earthquake in 1973, is of 10(19) pa center dot s order of magnitude. non-linear relationship between effective viscosity and strain rate is ignored in the former research of effective viscosity. this research shows the difference of effective viscosity obtained from laboratory experiment, and shorter and longer time post-seismic deformation after large earthquakes can be explained in phase. |
| WOS关键词 | CONTINENTAL-CRUST ; LITHOSPHERE ; CHINA ; FLOW ; MANTLE |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000264106100013 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2400770 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang ChaoJun |
| 作者单位 | 1.China Earthquake Network Ctr, Beijing 100045, Peoples R China 2.Chinese Acad Sci, Grad Univ, Lab Computat Geodynam, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang ChaoJun,Cao JianLing,Shi YaoLin. Studying the viscosity of lower crust of qinghai-tibet plateau according to post-seismic deformation[J]. Science in china series d-earth sciences,2009,52(3):411-419. |
| APA | Zhang ChaoJun,Cao JianLing,&Shi YaoLin.(2009).Studying the viscosity of lower crust of qinghai-tibet plateau according to post-seismic deformation.Science in china series d-earth sciences,52(3),411-419. |
| MLA | Zhang ChaoJun,et al."Studying the viscosity of lower crust of qinghai-tibet plateau according to post-seismic deformation".Science in china series d-earth sciences 52.3(2009):411-419. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。