Climate-change-induced seismicity: The recent onset of seasonal microseismicity at the Grandes Jorasses, Mt. Blanc Massif, France
| العنوان: | Climate-change-induced seismicity: The recent onset of seasonal microseismicity at the Grandes Jorasses, Mt. Blanc Massif, France |
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| المؤلفون: | Simon, Verena, Kraft, Toni, Toledo, Tania, Maréchal, Jean-Christophe |
| المصدر: | XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
| سنة النشر: | 2023 |
| الوصف: | Modeling studies suggest that climate change may cause a dynamic response of the geosphere, increasing geological and geomorphological hazards. These hazards include a potential rise in earthquake activity driven by climate-change-induced changes in the hydrological subsurface conditions. So far, evidence for this phenomenon is rare and often inconclusive.Here, we investigate an ongoing earthquake swarm with thousands of shallow MLOur QuakeMatch-analysis (Toledo et al., 2023) combines matched-filter detection sensitivity and consistent magnitude estimation with high-precision relocation and statistical analysis. It reveals that the seasonal component of the seismicity shows high b-values supporting the meltwater-driven origin, while the non-seasonal component shows a tectonic b-value around 1.0 dominated by earthquake-earthquake interaction. The seismicity increase since 2015 is associated with an increase in the short-term seismic hazard (STSH). In the high-activity phases, the STSH increased by up to two orders of magnitude compared to the STSH level before 2015.The meltwater-driven seasonality and the associated increase in STSH provide observational evidence that climate change can increase seismic hazard locally. Similar phenomena may be ongoing in glaciated regions worldwide. Our study can contribute to better quantifying the seismic risk for affected alpine communities. The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdebb6adb9277a05323a3faa3eef4ee1 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021672 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....cdebb6adb9277a05323a3faa3eef4ee1 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |