Avalanche Archives - Disasters News

Rock avalanches are a significant hazard in mountainous regions, but when ice is present, the risk escalates dramatically. In colder regions, rock-ice avalanches avalanches consisting of both rock and ice tend to travel much farther than those made up of rock alone. Despite this well-known behavior, scientists have long struggled to understand the exact mechanism behind this increased mobility. A recent study led by Fan et al. [2024] sheds new light on this mystery using advanced experimental methods. The researchers developed a state-of-the-art flume setup equipped with high-speed cameras that can operate at temperatures as low as −10°C. This allowed them to closely observe how ice fragments interact with rock fragments during avalanche simulations, offering unprecedented insight into ...

A recent study by Swiss Federal Institute for Snow and Avalanche Research (SLF) expert Stephanie Mayer reveals that less snowfall doesn't necessarily equate to fewer avalanches. Instead, climate change is shifting the nature of avalanche risks in Switzerland, particularly at elevations above 1,800 meters. Mayer’s research indicates that as temperatures rise, dry avalanches are likely to decrease, but they’ll be partially replaced by wet snow avalanches, especially at higher altitudes. These wet avalanches occur when part of the snowpack is moistened by rain or meltwater, making them challenging to control through traditional safety methods, such as artificial triggering. “Closing off endangered areas may be the only solution,” Mayer explains, highlighting the challenges this change pose...

Tag: Avalanche

New Study Reveals Why Rock-Ice Avalanches Travel Farther, Proposes Key Friction Equation

Climate Change Alters Avalanche Patterns in Switzerland: Wet Avalanches Set to Increase as Snowfall Declines