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?????????????GNSS???????????????????????????λ???????????????????3????????????3??GNSS???????????????GNSS??????????????μ????????????????????????????????????￡??????????????????3????????????????????????????????????????????????????????????????????????????????????????????λ??????????????????????????????з???3.0?????????????????о??д???????????? 相似文献
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??????????????24??????????????????????????????α?????????????????????????о????????α???????????????????????????????????????α????????????????????????????????????????????????????????????仯?????????????????′?1994??????????????????????????????????????????????2??3???о?????????????????????????γ?????????????????????????е????????????????????????????????о??????????Χ???????????????????????????????????????????????????????й?? 相似文献
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青海玉树地震的InSAR数据同震形变场模拟与参数反演分析 总被引：1，自引：0，他引：1
2010年4月我国青海省玉树藏族自治州的玉树县发生了Ms7.1级地震,这次地震(震中33.2°N 96.6°E,Ms=7.1)是由甘孜-玉树断层的强烈活动引起。甘孜-玉树断裂带大部分分布于青海-西藏高原,北西走向。该断裂带和鲜水河断裂带共同组成了巴颜喀拉地块的南边界,二者在甘孜附近成左阶错列分布。在区域构造背景分析和卫... 相似文献
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???????GPS???????????????о???????????GPS???????????????????????о??????????????????????????????????????????????????????У???????????????????????е????????????????????????????????????????? 相似文献
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利用断层蠕变观测数据,采用断层运动学分析方法、主成分分析法,综合研究鲜水河断裂带现今运动学特征,并探讨其与断裂带附近中强震孕育-发生及周边大尺度强震的可能关系。结果表明：1）鲜水河断裂带现今构造运动以左旋走滑为主,但错动方式并不唯一,在个别时段也出现短暂的右旋走滑。此外,鲜水河断裂带还表现出明显的分段活动特征。2）鲜水河断裂带断层蠕变观测在白玉MS5.5地震、雅江MS6.0地震、汶川MS8.0地震、芦山MS7.0地震以及康定MS6.3地震前均出现了不同程度的形变异常,属于这几次地震的前兆反应,而鲜水河断裂带于2001年底开始的大幅度拉张运动,主要是受2001-11-14昆仑山口西MS8.1地震震后大区域应力场调整影响所致。 相似文献
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In this paper, we made a systematic study on more than 40 years of observational data of ten temporary fault-crossing measurement sites in the capital circle region of China. We calculated horizontal and vertica1 components of fault slip, and horizontal extension or compression components. Considering the tectonic characteristics of the capital circle region and regional seismicity, we analyzed the present fault activity of the capital circle region and the relationship with earthquakes. The results show the complexity of fault activity in the region: the level of activity of all faults is low, most faults are left-lateral strike-slip faults; there is less vertical activity than horizontal activity and crustal movement is controlled by horizontal movement; fault activity and earthquake activity have a certain relationship, regional fault activity increases before an earthquake, and fault activity has certain abnormal features before strong earthquakes. 相似文献