将光纤地震阵列集成到地震预警系统中,使用dEPIC框架
Yuancong Gou1,2, Ran N Nof3, Brian Pardini4,5
1Department of Earth & Planetary Science, University of California, Berkeley, 94720, USA. yuancong_gou@berkeley.edu.
Scientific reports
|December 10, 2025
概括
分布式声学传感 (DAS) 通过使用光纤电缆作为地震传感器,彻底改变了地震预警 (EEW). 新的dEPIC框架提供了快速,准确的地震检测,增强了海上和陆上地震监测.
科学领域:
- 地质物理学 地质物理学
- 地震学 地震学
- 地震早期预警系统 (EEW)
背景情况:
- 稀缺的地震仪器,特别是海上,限制了地震早期预警能力.
- 分布式声学传感 (DAS) 通过利用现有的光纤基础设施作为密集的地震阵列提供了一个新的解决方案.
研究的目的:
- 引入和评估dEPIC (DAS-Earthquake Point-source Integrated Code),这是第一个整合DAS数据的EEW操作框架.
- 评估dEPIC在检测和定位陆上和海上地震方面的表现.
主要方法:
- 在加利福尼亚州蒙特利湾的一个海底光纤电缆上部署dEPIC.
- 集成GPU加速机器学习用于阶段选择,位置的网格搜索和大小的经验估计.
- 实时质量指标以过不稳定的解决方案.
主要成果:
- dEPIC证明了对陆上和海上地震的准确检测.
- 处理时间始终在1秒以下,这对于有效的EEW至关重要.
- 该系统被证明能够独立运行或与现有的EEW算法一起运行,例如ShakeAlert的EPIC.
结论:
- dEPIC代表了DAS集成EEW系统的重大进步.
- 该框架的模块化,边缘计算设计使其更容易适应各种DAS部署.
- 这项技术有可能大幅改进目前的EEW系统,并扩大地震监测网络.
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