Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095704 |
Immediate foreshocks indicating cascading rupture developments for 527 M 0.9 to 5.4 Ridgecrest earthquakes | |
Haoran Meng; Wenyuan Fan | |
2021-09-17 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Understanding earthquake foreshocks is essential for deciphering earthquake rupture physics and can aid seismic hazard mitigation. With regional dense seismic arrays, we identify immediate foreshocks of 527 0.9 M 5.4 events of the 2019 Ridgecrest earthquake sequence, including 48 earthquakes with series of immediate foreshocks. These immediate foreshocks are adjacent to the mainshocks occurring within 100 s of the mainshocks, and their P waves share high resemblances with the mainshock P waves. However, attributes of the immediate-foreshock P waves, including the amplitudes and preceding times, do not clearly scale with the mainshock magnitudes. Our observations suggest that earthquake rupture may initiate in a universal fashion but evolves stochastically. This indicates that earthquake rupture development is likely controlled by fine-scale fault heterogeneities in the Ridgecrest fault system, and the final magnitude is the only difference between small and large earthquakes. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338679 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Haoran Meng,Wenyuan Fan. Immediate foreshocks indicating cascading rupture developments for 527 M 0.9 to 5.4 Ridgecrest earthquakes[J]. Geophysical Research Letters,2021. |
APA | Haoran Meng,&Wenyuan Fan.(2021).Immediate foreshocks indicating cascading rupture developments for 527 M 0.9 to 5.4 Ridgecrest earthquakes.Geophysical Research Letters. |
MLA | Haoran Meng,et al."Immediate foreshocks indicating cascading rupture developments for 527 M 0.9 to 5.4 Ridgecrest earthquakes".Geophysical Research Letters (2021). |
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