Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092324 |
Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia | |
Jeffrey J. McGuire; Sarah E. Minson; Jessica R. Murray; Benjamin A. Brooks | |
2021-03-10 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The ShakeAlert Earthquake Early Warning (EEW) system issues public alerts in California and will soon extend to Oregon and Washington. The Cascadia subduction zone presents significant new challenges and opportunities for EEW. Initial publications suggested that EEW algorithms based on Global Navigation Satellite System (GNSS) data could provide improved warning for intraslab events and dramatically improved warning for offshore megathrust events, both of which contribute significantly to hazard in Cascadia. We find that some expectations in these publications were unrealistic, and we demonstrate that in general geodetic algorithms would not produce timely warnings for intraslab events nor warning times of two minutes or more for severe shaking from megathrust earthquakes. Nonetheless, lessons from recent earthquakes in Japan and California, for which alerts from seismic algorithms suffered from magnitude saturation and high data latencies, demonstrate the urgent need for rigorous testing of geodetic EEW as a potential complement to seismic EEW. |
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/318637 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Jeffrey J. McGuire,Sarah E. Minson,Jessica R. Murray,et al. Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia[J]. Geophysical Research Letters,2021. |
APA | Jeffrey J. McGuire,Sarah E. Minson,Jessica R. Murray,&Benjamin A. Brooks.(2021).Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia.Geophysical Research Letters. |
MLA | Jeffrey J. McGuire,et al."Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia".Geophysical Research Letters (2021). |
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