| 以GPS资料研究中国南北地震带深部构造应力场变化特征 |
| |
| 引用本文： | 吴小利,刘宁.以GPS资料研究中国南北地震带深部构造应力场变化特征[J].测绘科学,2011,36(5):57-59. |
| |
| 作者姓名： | 吴小利 刘宁 |
| |
| 作者单位： | 1. 中国冶金地质总局西北局,西安,710061
2. 西南交通大学,成都,610031 |
| |
| 摘 要： | 本文利用中国南北地震带2004-2007年间观测的239个GPS站数据,对中国南北地震带地壳内15km深处的最大主应力和最大剪应力进行了计算分析,并将计算结果与同期发生在中国南北地震带的地震活动进行了对比分析,结果表明观测同期发生的中强震大都位于应力变化大并且有深大断裂的地区,汶川地震进一步说明,四川地区地壳内的局部应力场变化与最大剪应力变化在空间分布上与强震活动区域存在较好的一致性。
|
| 关 键 词： | 构造应力场变化 GPS速率 地震活动 反演 |
Distribution characteristics of tectonic stress variation in north-south seismic belt of China from GPS data |
| |
| WU Xiao-li,LIU Ning.Distribution characteristics of tectonic stress variation in north-south seismic belt of China from GPS data[J].Science of Surveying and Mapping,2011,36(5):57-59. |
| |
| Authors: | WU Xiao-li LIU Ning |
| |
| Institution: | ②(①Administration of the Northwest of China Metallurgical Geology Bureau,Xi’an 710061,China;②Southwest Jiaotong University,Chengdu 610031,China) |
| |
| Abstract: | In the paper,the maximum principal stress and shear in depth 15 km of the earth was calculated with 239 GPS sites data observed during 2004 and 2007 in north-south seismic belt of china.The results were compared with moderate strong earthquakes occurred in the observation time period.The computed results showed that variation of stress was larger in western part of north-south seismic belt,such as western Sichuan and Yunnan province;the com-seismic occurred in western part of north-south seismic belt where ... |
| |
| Keywords: | tectonic stress variation GPS velocity seismic inversion |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
