Wamba M D, Sauter G, Shynkarenko A, Bouffard D, Schmidt-Aursch M C, Kremer K
Institute of Geological Sciences, University of Bern, Baltzerstrasse 1 + 3, 3012, Bern, Switzerland.
Swiss Seismological Service, ETH Zürich, Sonneggstrasse 5, 8092, Zürich, Switzerland.
Sci Rep. 2025 Jul 1;15(1):20432. doi: 10.1038/s41598-025-07186-0.
Ocean Bottom Seismometers (OBS) are primarily designed to record seismic signals in marine environments. However, the fundamental principles of their operation as broadband instruments enable a wider range of applications. Here, we demonstrate that OBS systems can also effectively monitor the impact of sudden strong wind events on lakes. We conducted an experiment in Lake Lucerne (Switzerland), at the Muota Delta, using five OBS equipped with hydrophones. In addition, an Acoustic Doppler Current Profiler (ADCP) was moored to record current speed and direction. Comprehensive data analysis of weather measurements reveals a link between a strong wind and seismic signature. A foehn event that occurred on October 10th, 2023 in Switzerland caused a wind-lake interaction that triggered an internal current in the lake, with intensified deep near-bed velocity flowing in the upwind direction. Seismic signals induced by foehn winds correlate strongly with recorded increased sediment load, likely from resuspension or erosion, demonstrating how ocean-bottom seismometer networks can enhance environmental monitoring.
海底地震仪（OBS）主要用于记录海洋环境中的地震信号。然而，其作为宽带仪器的基本工作原理使其能够应用于更广泛的领域。在此，我们证明了OBS系统还能有效地监测突发强风事件对湖泊的影响。我们在瑞士琉森湖的穆奥塔三角洲进行了一项实验，使用了五台配备水听器的OBS。此外，还系泊了一台声学多普勒流速剖面仪（ADCP）来记录流速和流向。对气象测量数据的综合分析揭示了强风与地震信号之间的联系。2023年10月10日在瑞士发生的一次焚风事件引发了风 - 湖相互作用，触发了湖中的内部水流，导致上风方向近床深处流速增强。焚风引发的地震信号与记录到的沉积物负荷增加密切相关，这可能是由于再悬浮或侵蚀造成的，展示了海底地震仪网络如何能够加强环境监测。
