论文标题

在南加州的极端地震的时空图案挖掘

Spatiotemporal Pattern Mining for Nowcasting Extreme Earthquakes in Southern California

论文作者

Feng, Bo, Fox, Geoffrey C.

论文摘要

地球科学和地震学利用最先进的技术和设备来监测过去几十年来全球的地震事件。借助大量数据,现代GPU驱动的深度学习提出了一种有希望的方法来分析数据和发现模式。近年来,有许多成功的深度学习模型用于采摘地震浪潮。但是,预测可能造成灾难的极端地震仍然是历史上不发达的话题。时空动力学挖掘和预测的相关研究揭示了一些成功的预测,这是许多科学研究领域的关键主题。其中大多数研究都有许多使用深神经网络的成功应用。在地质和地球科学研究中,地震预测是世界上最具挑战性的问题之一,尖端的深度学习技术可能有助于发现一些有价值的模式。在这个项目中,我们提出了一种深度学习建模方法,即\ tseqpre,以通过在随着时间的推移中发现区域粗粒的空间网格中的视觉动态来挖掘从数据到现在的极端地震的时空模式。在这种建模方法中,我们使用具有地球科学和地震学领域知识的合成深度学习神经网络来利用地震模式使用卷积长的短期记忆神经网络进行预测。我们的实验表明,南加州地震的位置预测与幅度预测之间存在很强的相关性。消融研究和可视化验证了所提出的建模方法的有效性。

Geoscience and seismology have utilized the most advanced technologies and equipment to monitor seismic events globally from the past few decades. With the enormous amount of data, modern GPU-powered deep learning presents a promising approach to analyze data and discover patterns. In recent years, there are plenty of successful deep learning models for picking seismic waves. However, forecasting extreme earthquakes, which can cause disasters, is still an underdeveloped topic in history. Relevant research in spatiotemporal dynamics mining and forecasting has revealed some successful predictions, a crucial topic in many scientific research fields. Most studies of them have many successful applications of using deep neural networks. In Geology and Earth science studies, earthquake prediction is one of the world's most challenging problems, about which cutting-edge deep learning technologies may help discover some valuable patterns. In this project, we propose a deep learning modeling approach, namely \tseqpre, to mine spatiotemporal patterns from data to nowcast extreme earthquakes by discovering visual dynamics in regional coarse-grained spatial grids over time. In this modeling approach, we use synthetic deep learning neural networks with domain knowledge in geoscience and seismology to exploit earthquake patterns for prediction using convolutional long short-term memory neural networks. Our experiments show a strong correlation between location prediction and magnitude prediction for earthquakes in Southern California. Ablation studies and visualization validate the effectiveness of the proposed modeling method.

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