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| DOI | 10.1029/2023AV001134 |
| Fault Orientation Trumps Fault Maturity in Controlling Coseismic Rupture Characteristics of the 2021 Maduo Earthquake | |
| 发表日期 | 2024 |
| EISSN | 2576-604X |
| 起始页码 | 5 |
| 结束页码 | 2 |
| 卷号 | 5期号:2 |
| 英文摘要 | Fault maturity has been proposed to exert a first order control on earthquake rupture, yet direct observations linking individual rupture to long-term fault growth are rare. The 2021 Mw 7.4 Maduo earthquake ruptured the east-growing end of the slow-moving (similar to 1 mm/yr) Jiangcuo fault in north Tibet, providing an opportunity to examine the relation between rupture characteristics and fault structure. Here we combine field and multiple remote sensing techniques to map the surface rupture at cm-resolution and document comprehensively on-fault offsets and off-fault deformation. The 158 km-long surface rupture consists of misoriented structurally inherited N110 degrees-striking segments and younger optimally oriented N093 degrees-striking segments, relative to the regional stress field. Despite being comparatively newly formed, the similar to N093 degrees-striking fault segments accommodate more localized strain, with up to 3 m on-fault left-lateral slip and 25%-50% off-fault deformation, and possibly faster rupture speed. These results are in contrast with previous findings showing more localized strain and faster rupture speed on more mature fault segments; instead, our observations suggest that fault orientation with respect to the regional stress can exert a more important control than fault maturity on coseismic rupture behavior when both factors are at play. |
| 英文关键词 | fault growth; geological inheritance; stress-favorable orientation; the Mw 7.4 Maduo earthquake; surface rupture; coseismic slip |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001193632800001 |
| 来源期刊 | AGU ADVANCES
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/288497 |
| 作者单位 | Tianjin University; China Earthquake Administration; California Institute of Technology; University of California System; University of California Davis; Southern University of Science & Technology; Universite Paris Cite; China Earthquake Administration; Institute of Earthquake Forecasting, CEA |
| 推荐引用方式 GB/T 7714 | . Fault Orientation Trumps Fault Maturity in Controlling Coseismic Rupture Characteristics of the 2021 Maduo Earthquake[J],2024,5(2). |
| APA | (2024).Fault Orientation Trumps Fault Maturity in Controlling Coseismic Rupture Characteristics of the 2021 Maduo Earthquake.AGU ADVANCES,5(2). |
| MLA | "Fault Orientation Trumps Fault Maturity in Controlling Coseismic Rupture Characteristics of the 2021 Maduo Earthquake".AGU ADVANCES 5.2(2024). |
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