Articles | Volume 22, issue 5
https://doi.org/10.5194/nhess-22-1541-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-22-1541-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Brief communication
| 
06 May 2022
Brief communication |
| 06 May 2022
| 06 May 2022
Brief communication: Seismological analysis of flood dynamics and hydrologically triggered earthquake swarms associated with Storm Alex
Małgorzata Chmiel
CORRESPONDING AUTHOR
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Laboratory of Hydraulics, Hydrology and Glaciology, ETH Zürich, Zurich, Switzerland
Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
Maxime Godano
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Marco Piantini
Institute for Geosciences and Environmental Research (IGE), CNRS/INSU, IRD, Université Grenoble Alpes and Grenoble INP, 38 058 Grenoble, France
Pierre Brigode
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
INRAE, UR HYCAR, Université Paris-Saclay, 1 Rue Pierre-Gilles de Gennes, 92160 Antony, France
Florent Gimbert
Institute for Geosciences and Environmental Research (IGE), CNRS/INSU, IRD, Université Grenoble Alpes and Grenoble INP, 38 058 Grenoble, France
Maarten Bakker
Institute for Geosciences and Environmental Research (IGE), CNRS/INSU, IRD, Université Grenoble Alpes and Grenoble INP, 38 058 Grenoble, France
Françoise Courboulex
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Jean-Paul Ampuero
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Diane Rivet
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Anthony Sladen
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
David Ambrois
Géoazur, Observatoire de la Côte d'Azur, CNRS, IRD, Université Côte d'Azur, 06905 Sophia Antipolis, France
Margot Chapuis
ESPACE, CNRS, Université Côte d'Azur, bd Edouard Herriot, 06204 Nice, France
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Olivier Delaigue, Pierre Brigode, Guillaume Thirel, and Laurent Coron
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In situ glacier point mass balance data are crucial to assess climate change in different regions of the world. Unfortunately, these data are rare because huge efforts are required to conduct in situ measurements on glaciers. Here, we propose a new approach from remote sensing observations. The method has been tested on the Argentière and Mer de Glace glaciers (France). It should be possible to apply this method to high-spatial-resolution satellite images and on numerous glaciers in the world.
Martijn P. A. van den Ende, Marco M. Scuderi, Frédéric Cappa, and Jean-Paul Ampuero
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The injection of fluids (like wastewater or CO2) into the subsurface could cause earthquakes when existing geological faults inside the reservoir are (re-)activated. To assess the hazard associated with this, previous studies have conducted experiments in which fluids have been injected into centimetre- and decimetre-scale faults. In this work, we analyse and model these experiments. To this end, we propose a new approach through which we extract the model parameters that govern slip on faults.
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Short summary
On 2 October 2020, the French Maritime Alps were struck by an extreme rainfall event caused by Storm Alex. Here, we show that seismic data provide the timing and velocity of the propagation of flash-flood waves along the Vésubie River. We also detect 114 small local earthquakes triggered by the rainwater weight and/or its infiltration into the ground. This study paves the way for future works that can reveal further details of the impact of Storm Alex on the Earth’s surface and subsurface.
On 2 October 2020, the French Maritime Alps were struck by an extreme rainfall event caused by...
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