基于长短期记忆神经网络的实时地震烈度预测模型
A Real-Time Seismic Intensity Prediction Model Based on Long Short-Term Memory Neural Network
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实时烈度预测可在破坏性地震波到达前,根据P波估计地震可能造成的最大影响.预警对象可以采取措施,降低可能造成的损失.P波位移幅值是一种有效估计地震动峰值的参数,然而单个或多个参数难以全面表征地震动中的信息.同时,参数的计算需要确定时间窗大小,无法实现连续预测.为了解决上述问题,提出了一种基于长短期记忆网络的实时地震烈度预测模型.基于2010-2021年K-NET数据构建模型,并选取2022年3月M JMA7.3地震事件作为案例验证模型.结果表明,P波到达后可以在记录的每个时间步预测烈度,P波到达3 s时在测试集中准确率为96.47%.提出的LSTM模型改善了烈度预测的准确性和连续性,可为地震预警、应急响应等提供科学依据.
地震烈度 / 实时 / 神经网络 / 深度学习 / 地震预警 / 工程地质
seismic intensity / real time / neural network / deep learning / earthquake early warning / engineering geology
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国家自然科学基金重点项目(U1939210)
中国地震局工程力学研究所基本科研业务费专项(2021EEEVL0103)
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