预测加拿大地震带最大的预期地震
Kanakom Thongmeesang1, Robert Shcherbakov1,2
1Department of Earth Sciences, Western University, London, ON N6A 5B7, Canada.
Entropy (Basel, Switzerland)
|February 27, 2026
概括
在加拿大使用流行型余震序列 (ETAS) 模型进行地震预测,显示不列颠哥伦比亚省的地震风险很高. 阿尔伯塔省的风险最低,而安大略省东部和北克南部地区面临中度地震的重大威胁.
科学领域:
- 地质物理学 地质物理学
- 地震学 地震学
- 地震科学 地震科学 地震科学
背景情况:
- 地震造成重大破坏,需要有效的预测模型.
- 流行型余震序列 (ETAS) 模型是分析地震序列的关键统计框架.
研究的目的:
- 将ETAS模型应用于加拿大地震性,用于参数估计和长期预测.
- 评估ETAS模型通过生成合成地震目录来复制观测到的地震模式的能力.
主要方法:
- 利用加拿大的历史地震数据.
- 估计了七个不同的加拿大地区的ETAS模型参数.
- 创建合成地震目录以验证模型性能.
主要成果:
- 加拿大西南部 (不列颠哥伦比亚海岸) 面临着最高的地震风险,在30年内发生M7.5+地震的概率为66%.
- 阿尔伯塔州的地震风险最低 (M6.5+事件的概率为4%).
- 加拿大东南部 (安大略省,北克省) 有74%的M6.0+事件的概率,对人口密地区构成风险.
结论:
- 该ETAS模型有效地描述了加拿大的地震性,并预测了区域风险.
- 该模型生成的地震性地图对于实时分析非常有用,尽管对于更广泛的应用需要进一步改进.
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