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arXiv 2003.12539physics.geo-ph
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基于地震长期记忆的改进地震预报模型

Improved Earthquake Forecasting Model Based on Long-term Memory in Earthquake

Yongwen Zhang, Dong Zhou, Jingfang Fan, Warner Marzocchi, Yosef Ashkenazy, Shlomo Havlin

摘要:

地震的一个显著特征是它们的经验规律,包括时间和空间上的记忆(聚类)。根据地震经验规律,发展了流行型余震序列(ETAS)等几种地震预报模型。然而,最近的一项研究表明,ETAS模型无法再现真实地震目录中发现的重要长期记忆特征。在这里,我们修改和推广的ETAS模型,包括短期和长期的触发机制,占短期和长期的记忆(指数)最近发现的数据。我们的广义ETAS模型准确地再现了意大利和南加州地震目录中观察到的短期和长期/距离记忆。修正后的ETAS模型也被发现显着改善地震预报。

英文摘要:

A prominent feature of earthquakes is their empirical laws including memory (clustering) in time and space. Several earthquake forecasting models, like the EpidemicType Aftershock Sequence (ETAS) model, were developed based on earthquake empirical laws. Yet, a recent study showed that the ETAS model fails in reproducing significant long-term memory characteristics found in real earthquake catalogs. Here we modify and generalize the ETAS model to include short- and long-term triggering mechanisms, to account for the short- and long-time memory (exponents) recently discovered in the data. Our generalized ETAS model reproduces accurately the short- and long-term/distance memory observed in the Italian and South California earthquake catalogs. The revised ETAS model is also found to significantly improve earthquake forecasting.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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