Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091757 |
Rare occurrences of non‐cascading foreshock activity in Southern California | |
L. Moutote; D. Marsan; O. Lengliné; Z. Duputel | |
2021-02-19 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Earthquakes preceding large events are commonly referred to as foreshocks. They are often considered as precursory phenomena reflecting the nucleation process of the main rupture. Such foreshock sequences may also be explained by cascades of triggered events. Recent advances in earthquake detection motivates a reevaluation of seismicity variations prior to mainshocks. Based on a highly complete earthquake catalog, previous studies suggested that mainshocks in Southern California are often preceded by anomalously elevated seismicity. In this study, we test the same catalog against the Epidemic Type Aftershock Sequence model that accounts for temporal clustering due to earthquake interactions. We find that 10/53 mainshocks are preceded by a significantly elevated seismic activity compared with our model. This shows that anomalous foreshock activity are relatively uncommon when tested against a model of earthquake interactions. Accounting for the recurrence of anomalies over time, only 3/10 mainshocks present a mainshock‐specific anomaly with a high predictive power. |
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/315628 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | L. Moutote,D. Marsan,O. Lengliné,等. Rare occurrences of non‐cascading foreshock activity in Southern California[J]. Geophysical Research Letters,2021. |
APA | L. Moutote,D. Marsan,O. Lengliné,&Z. Duputel.(2021).Rare occurrences of non‐cascading foreshock activity in Southern California.Geophysical Research Letters. |
MLA | L. Moutote,et al."Rare occurrences of non‐cascading foreshock activity in Southern California".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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