Study of Subterranean Floods in Oceanic Subpolar Karst of Madre de Dios Archipelago (Patagonia, Chile)
Résumé
Madre de Dios archipelago is located, at 50°30′ S, on the Pacific front.
The karst areas in the reef limestone of Upper Paleozoic of Chilean Patagonia have
long remained unexplored because of their remoteness, difficult access and very
inhospitable cold, wet and windy climate. The annual rainfall is 7–8 m/year−1 and
the average wind speed reaches 70 kmph−1 almost unidirectional (W to NW), and
involve strong floods at a high rate. To study the flood dynamics, several underground
sites have been instrumented in 2008 and recovered in 2010.