Early warning is a critical potential tool for mitigating the impacts of large mass wasting and flood events, a major hazard in the Himalaya. We used data from a dense seismic network in Uttarakhand, India, to detect and track a fatal rockslide to mass flow to flood cascade and examine the potential for regional networks to provide early warning for extreme flow events. Detection limits of the 7 February 2021 event depend on the nature of the active process and on the anthropogenic and environmental seismic noise levels at each station. With the existing network, a seismic monitoring system could have detected all event phases from up to 100 kilometers and provided downstream warnings within minutes of event initiation.

中文翻译：

---

利用区域地震台网检测和潜在的灾难性流动事件预警

预警是减轻大规模浪费和洪水事件影响的重要潜在工具，这是喜马拉雅山的主要灾害。我们使用来自印度北阿坎德邦一个密集地震网络的数据来检测和跟踪致命的岩石滑坡到大规模流动到洪水级联，并检查区域网络为极端流动事件提供早期预警的潜力。2021 年 2 月 7 日事件的检测限取决于活动过程的性质以及每个站的人为和环境地震噪声水平。借助现有网络，地震监测系统可以检测到 100 公里范围内的所有事件阶段，并在事件开始后的几分钟内提供下游警告。