Brief communication: Seismological analysis of flood dynamics and hydrologically triggered earthquake swarms associated with Storm Alex
نویسندگان
چکیده
Abstract. On 2 October 2020, the Maritime Alps in southern France were struck by devastating Storm Alex, which caused locally more than 600 mm of rain less 24 h. The extreme rainfall and flooding destroyed regional stream gauges. That hinders our understanding spatial temporal dynamics rainfall–runoff processes during storm. Here, we show that seismological observations from permanent seismic stations constrain these at a catchment scale. analysis power, peak frequency, back azimuth provides us with timing velocity propagation flash-flood waves associated bedload-dominated phases flood on Vésubie River. Moreover, combined short-term average to long-term ratio template-matching earthquake detection reveal 114 local earthquakes between magnitude ML=-0.5 ML=2 triggered hydrological loading and/or resulting situ underground pore pressure increase. This study shows impact Alex Earth's surface deep-layer paves way for future works can further details processes.
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ژورنال
عنوان ژورنال: Natural Hazards and Earth System Sciences
سال: 2022
ISSN: ['1561-8633', '1684-9981']
DOI: https://doi.org/10.5194/nhess-22-1541-2022