https://scholars.lib.ntu.edu.tw/handle/123456789/638469
標題: | Magnitude determination using cumulative absolute absement for earthquake early warning | 作者: | YIH-MIN WU Mittal, Himanshu Lin, Yueh Ho Chang, Yu Hsuan |
關鍵字: | Early Warning | Earthquake | Magnitude | P-waves | 公開日期: | 1-十二月-2023 | 卷: | 10 | 期: | 1 | 來源出版物: | Geoscience Letters | 摘要: | The cumulative absolute absement (CAA) of the 3 s window after P-wave arrival can be used to estimate the magnitude (MCAA) of an earthquake. This method can achieve good results even when only the six stations nearest to the epicenter are used. The standard deviation between the estimated CAA magnitude (MCAA) and the moment magnitude (Mw) is found to be 0.3 when using either 6 or 20 stations. This means that MCAA can be reliably predicted using the closest 6 stations. On the other hand, the magnitude (MPd) derived from Pd using the closest 20 stations has a standard deviation of 0.4 between the estimated MPd and Mw . This suggests that CAA is a better magnitude determination parameter for the EEW system than Pd . |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/638469 | ISSN: | 2196-4092 | DOI: | 10.1186/s40562-023-00314-6 |
顯示於: | 地質科學系 |
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