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DOI | 10.1029/2021GL095417 |
Tectonic and geometric control on fault kinematics of the 2021 Mw7.3 Maduo (China) earthquake inferred from interseismic, coseismic and postseismic InSAR observations | |
Dezheng Zhao; Chunyan Qu; Han Chen; Xinjian Shan; Xiaogang Song; Wenyu Gong | |
2021-09-13 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The 2021 Mw7.3 Maduo (Qinghai, China) earthquake ruptured ∼160 km along a poorly known secondary fault inside the Bayanhar block on the northern Tibetan plateau, which is generally parallel to the Kunlun fault. Here we integrate the interseismic (2015-2020) and coseismic geodetic observations to quantify the interseismic strain rate, fault geometry and coseismic slip distribution. Our results reveal that the seismogenic fault is featured by the low (<20 nanostrain/yr) and nearly undetectable interseismic strain rate. Three-dimensional displacement fields and coseismic strain maps demonstrate the spatial variations of rupture kinematics due to the change of fault geometry. Our study reveals the steeply north-dipping fault geometry of the seismogenic fault. The majority of coseismic slip occurred between 0- and 15-km with slight shallow slip deficit, which not penetrates through the inferred elastic upper crust (∼20-25 km). Our study highlights the tectonic and geometric control on fault kinematics of the Maduo earthquake. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338755 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Dezheng Zhao,Chunyan Qu,Han Chen,et al. Tectonic and geometric control on fault kinematics of the 2021 Mw7.3 Maduo (China) earthquake inferred from interseismic, coseismic and postseismic InSAR observations[J]. Geophysical Research Letters,2021. |
APA | Dezheng Zhao,Chunyan Qu,Han Chen,Xinjian Shan,Xiaogang Song,&Wenyu Gong.(2021).Tectonic and geometric control on fault kinematics of the 2021 Mw7.3 Maduo (China) earthquake inferred from interseismic, coseismic and postseismic InSAR observations.Geophysical Research Letters. |
MLA | Dezheng Zhao,et al."Tectonic and geometric control on fault kinematics of the 2021 Mw7.3 Maduo (China) earthquake inferred from interseismic, coseismic and postseismic InSAR observations".Geophysical Research Letters (2021). |
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