Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092815 |
Misconception of Waveform Similarity in the Identification of Repeating Earthquakes | |
Dawei Gao; Honn Kao; Bei Wang | |
2021-06-19 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Identification of repeating earthquakes (repeaters) usually depends on waveform similarity expressed as the corresponding cross-correlation coefficient (CC) above a prescribed threshold, typically ranging in 0.70–0.98. However, the robustness and effectiveness of such a strategy have rarely been fully examined. In this study, we examine whether CC is a valid proxy for repeater identification through both synthetic and real earthquake experiments. We reveal that CC is controlled by not only the inter-event distance but also many other factors, including station azimuth, epicentral distance, velocity structure, etc. Consequently, CC lacks the resolution in identifying true repeaters. For reliable repeater identification, we should consider the inter-event overlap. Specifically, we define an event pair to be true repeaters if their inter-event separation is smaller than the source dimension of the larger event. Our results imply that a systematic recheck of previously identified repeaters and associated interpretations/hypotheses may be important and necessary. |
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/330707 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Dawei Gao,Honn Kao,Bei Wang. Misconception of Waveform Similarity in the Identification of Repeating Earthquakes[J]. Geophysical Research Letters,2021. |
APA | Dawei Gao,Honn Kao,&Bei Wang.(2021).Misconception of Waveform Similarity in the Identification of Repeating Earthquakes.Geophysical Research Letters. |
MLA | Dawei Gao,et al."Misconception of Waveform Similarity in the Identification of Repeating Earthquakes".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论