Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092951 |
Learning the low frequency earthquake activity on the central San Andreas Fault | |
Christopher W. Johnson; Paul A. Johnson | |
2021-06-14 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Low frequency earthquakes (LFEs) originating below the central San Andreas Fault are associated with slow-slip beneath the seismogenic zone within the more ductile portion of the crust. Monitoring efforts over 15 years detected > 1 million LFEs. We train a gradient boosted tree model using statistical features describing the seismic waveforms to estimate the hourly LFE event count. The burst-like LFE behavior is reproduced, while lower amplitudes are predicted during the most active periods. The hourly event counts are up to 18% greater than the catalog. The ability to continuously monitor LFE activity provides insight to when geodetic measurements of slow slip are possible, without the need for developing a computational-intensive template-matching catalog. Similar waveform statistical features are found between detecting LFEs and tremors, which provides additional evidence tremors are composed of LFEs. The approach extracts information contained in continuous seismic waveforms that might benefit detecting precursory signals. |
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/330792 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Christopher W. Johnson,Paul A. Johnson. Learning the low frequency earthquake activity on the central San Andreas Fault[J]. Geophysical Research Letters,2021. |
APA | Christopher W. Johnson,&Paul A. Johnson.(2021).Learning the low frequency earthquake activity on the central San Andreas Fault.Geophysical Research Letters. |
MLA | Christopher W. Johnson,et al."Learning the low frequency earthquake activity on the central San Andreas Fault".Geophysical Research Letters (2021). |
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