Reacción a "A study confirms that the thawing of permafrost and the weakening of glaciers due to climate change contributed to the flash floods in Nepal"

The analysis presented in the report treats the disaster in Nepal as a cascade of events rather than an isolated incident. Debris flows are usually produced in the following way: there is typically a triggering factor, combined with the collapse of ice, rock and sediments, which, when joined by surface water flow, rapidly generates a large volume of a mixture of water and solids that propagates at high speed, increasing in volume as it entrains all the suspended material in its path.

This type of flow cannot be treated as a conventional flooding process, in which water flow predominates with only a small amount of sediment being carried along; rather, in this type of flow, it is the solid material that governs the flow and makes it a more catastrophic phenomenon. From the perspective of numerical modelling, this type of flow is also more complex than flooding, as it must take into account processes of erosion, transport and sedimentation.