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| DOI | 10.1029/2019GL086302 |
| Elastic Impact Consequences for High-Frequency Earthquake Ground Motion | |
| Tsai V.C.; Hirth G. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:5 |
| 英文摘要 | A fundamental question of earthquake science is what produces damaging high-frequency ground motion, with the classic Brune-Haskell model postulating that abrupt fault slip causes it. However, even when amended with heterogeneous rupture, the model fails to explain observations of different sized repeating earthquakes and has challenges explaining high-frequency radiation patterns. We propose an additional cause for high-frequency earthquake spectra from elastic collisions of structures within a rupturing fault zone. The collision spectrum is set by an impact contact time proportional to the size of colliding structures so that spectra depend on fundamentally different physical parameters compared with slip models. When added to standard models, collisions can reconcile the discrepant observations since the size, shape, and orientation of structures vary between different fault zones but remain constant within a fault segment. High-frequency earthquake ground motions and damage may therefore be an outgrowth of fault-zone structure rather than sudden initiation of slip. ©2020. The Authors. |
| 英文关键词 | Earthquake effects; Earthquakes; Colliding structures; Earthquake ground motions; Elastic impacts; Fault zone structures; Ground motions; High frequency HF; High-frequency radiation; Repeating earthquake; Fault slips; collision; earthquake event; earthquake rupture; fault slip; fault zone; ground motion; seismology |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/170593 |
| 作者单位 | Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, United States |
| 推荐引用方式 GB/T 7714 | Tsai V.C.,Hirth G.. Elastic Impact Consequences for High-Frequency Earthquake Ground Motion[J],2020,47(5). |
| APA | Tsai V.C.,&Hirth G..(2020).Elastic Impact Consequences for High-Frequency Earthquake Ground Motion.Geophysical Research Letters,47(5). |
| MLA | Tsai V.C.,et al."Elastic Impact Consequences for High-Frequency Earthquake Ground Motion".Geophysical Research Letters 47.5(2020). |
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