| Evaluation of micro-behavior of strain field in Chinese mainland with the GPS time series |
| |
| 作者姓名： | 敬少群 王佳卫 吴云 周硕愚 施顺英 |
| |
| 作者单位： | Earthquake Administration of Hunan Province，Earthquake Administration of Hunan Province，Institute of Seismology China Earthquake Administration，Institute of Seismology，China Earthquake Administration，Institute of Seismology，China Earthquake Administration，Changsha 410012，China，Changsha 410012，China，Wuhan 430071，China，Wuhan 430071，China，Wuhan 430071，China |
| |
| 基金项目： | Founddation item： National Natural Science Foundation of China （40074024）. |
| |
| 摘 要： | Introduction In the last 20 years, with observation technique development in space monitoring to Earth, a large progress has been made in monitoring crustal movement. This makes it possible for us to study crustal movement and the present geodynamic. Continuous GPS observation conducted in Chinese mainland and its neighboring region provides us for studying the present strain field of crustal micro-behavior tectonic. Crustal micro-behavior tectonic means that we can study the dif-ference bet…
|
| 关 键 词： | 时间数列 GPS 全球定位系统 地应变 地震 |
| 文章编号： | 1000-9116（2006）05-0514-08 |
| 收稿时间： | 2006-01-11 |
| 修稿时间： | 2006-06-14 |
Evaluation of micro-behavior of strain field in Chinese mainland with the GPS time series |
| |
| JING Shao-qun,WANG Jia-wei,WU Yun,ZHOU Shuo-yu,SHI Shun-ying.Evaluation of micro-behavior of strain field in Chinese mainland with the GPS time series[J].Acta Seismologica Sinica(English Edition),2006,19(5):514-521. |
| |
| Authors: | JING Shao-qun WANG Jia-wei WU Yun ZHOU Shuo-yu SHI Shun-ying |
| |
| Institution: | 1. Earthquake Administration of Hunan Province,Changsha,410012,China
2. Institute of Seismology,China Earthquake Administration,Wuhan,430071,China |
| |
| Abstract: | Based on the time series of GPS station coordinate in the intemational Earth reference frame (ITRF), we evaluate annual micro-behavior
of strain field in Chinese mainland with the triangle method. The results show that the annual micro-behavior of strain field
is divided into two parts by the north-south earthquake belt in the research region. The prevailing direction of compressive
principal strain field is nearly consistent in the western region. From west to east, the direction varies from NS to NE.
It is in accordance with the direction of the modern compressive principal strain field. This suggests that geologic deformation
in western region was mainly caused by that India tectonic plate pushes the research region northward and the Siberia plate
pushes it southward relatively. It is an inheritance of new tectonic motion. The prevailing direction of the compressive principal
strain field does not exist in the eastern region. The annual biggest shear strain is different greatly in every grid-cell.
The values varies from 4.13×10−8 to 7.0×10−10. By and large the annual biggest shear strain in the western region is bigger than that in the eastern region. And so is
the variation between any two consecutive biggest annual shear strains in the same grid-cell. The annual surface dilatation
show that in most grid-cells of the research region the surface dilatation is in compressibility, and the variation between
any two consecutive annual surface dilatation in the same grid-cell is small.
Foundation item: National Natural Science Foundation of China (40074024). |
| |
| Keywords: | GPS time series micro-behavior of strain field annual strain field |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
