Glacial-isostatic-adjustment strain rate–stress paradox in the Western Alps and impact on active faults and seismicity
Juliette Grosset,
Stéphane Mazzotti,
Philippe Vernant
Abstract:Abstract. In many regions formerly glaciated during the Last Glacial Maximum (LGM), glacial isostatic adjustment (GIA) explains most of the measured uplift and deformation rates. GIA is also proposed as a key process contributing to fault activity and seismicity shortly after the LGM and potentially up to the present day. Here, we study the impact of GIA on present-day fault activity and seismicity in the Western Alps. We show that, in the upper crust, GIA induces horizontal compressive stress perturbations as… Show more
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