arXiv:2410.20595cs.CVcs.LG2024-10被引 1

用图像分割模型自动识别火山地震事件,支持多台站实时分析。

A Framework for Real-Time Volcano-Seismic Event Recognition Based on Multi-Station Seismograms and Semantic Segmentation Models

  • 将多台站地震信号转为2D图像,用语义分割模型统一检测分类。
  • 在4个智利火山数据上达到0.91的平均F1和0.88的交并比。
  • 无需复杂预处理,对噪声和新火山数据有强适应性,适合实时监测。

在火山监测中,有效识别地震事件对理解火山活动和及时发布预警至关重要。传统方法依赖人工分析,主观性强且耗时;现有自动方法通常分开处理检测与分类,多基于单台站数据,且需定制化预处理和特征表示,限制了其在实时监测及不同火山条件下的应用。本研究提出一种新框架,利用语义分割模型,通过将多通道一维信号直接转换为二维表示,使其可作为图像处理。该端到端数据驱动框架整合多台站地震数据,极少预处理,同时完成五类地震事件的检测与分类。我们在四个智利火山(奇兰火山群、拉尼亚德尔马乌莱、维拉里卡、普耶赫-科尔东考勒)记录的约25,000个地震事件上评估了四种先进分割模型(UNet、UNet++、DeepLabV3+ 和 SwinUNet)。其中,UNet表现最优,平均F1和交并比(IoU)分别达0.91和0.88,展现出更强的抗噪能力和对未见火山数据的适应性。

原文摘要 · Abstract (English)

In volcano monitoring, effective recognition of seismic events is essential for understanding volcanic activity and raising timely warning alerts. Traditional methods rely on manual analysis, which can be subjective and labor-intensive. Furthermore, current automatic approaches often tackle detection and classification separately, mostly rely on single station information and generally require tailored preprocessing and representations to perform predictions. These limitations often hinder their application to real-time monitoring and utilization across different volcano conditions. This study introduces a novel approach that utilizes Semantic Segmentation models to automate seismic event recognition by applying a straight forward transformation of multi-channel 1D signals into 2D representations, enabling their use as images. Our framework employs a data-driven, end-to-end design that integrates multi-station seismic data with minimal preprocessing, performing both detection and classification simultaneously for five seismic event classes. We evaluated four state-of-the-art segmentation models (UNet, UNet++, DeepLabV3+ and SwinUNet) on approximately 25.000 seismic events recorded at four different Chilean volcanoes: Nevados del Chillán Volcanic Complex, Laguna del Maule, Villarrica and Puyehue-Cordón Caulle. Among these models, the UNet architecture was identified as the most effective model, achieving mean F1 and Intersection over Union (IoU) scores of up to 0.91 and 0.88, respectively, and demonstrating superior noise robustness and model flexibility to unseen volcano datasets.

地震识别语义分割火山监测实时分析

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