#ClimateChange
"Massive climate-induced earthquakes are brewing beneath our biggest cities. Are we prepared?
Climate change isn’t just warming the planet; it’s shaking Earth’s foundations
(. . .)
When we think about climate change, it’s usually in terms of how the atmosphere and oceans are heating up. The idea that it can also affect the ground beneath our feet seems almost laughable. Nonetheless, it’s true.
Seismological Service, published summer 2025, links swarms of small tremors beneath Mont Blanc in the European Alps to rapid thawing of ice and snow during a heatwave in 2015.
Percolating downwards, the extra water eventually found its way into a major fault zone that slices through the 12km-long (7-mile) Mont Blanc Road Tunnel, lubricating it and causing it to shift sufficiently to trigger a burst of low-level seismic activity.
The occurrence of small tremors has since remained elevated, substantially hiking the risk of bigger quakes in the future.
As global heating continues to drive longer and more intense heatwaves, meltwater sourced by accelerated glacier melting and the thawing of permafrost can be expected to increase seismic activity across the world’s high mountain ranges, and the great tracts of permafrost in Canada and Siberia.
As well as raising concerns among those who live in the Mont Blanc region, the Swiss research also holds lessons for any town or city on geological faults that have spawned big quakes in the past; think Tokyo in Japan, and San Francisco and Los Angeles in California."
https://www.sciencefocus.com/planet-earth/massive-climate-induced-earthquakes