New risk factors for avalanche trigger revealed

April 4th, 2014 in Earth / Earth Sciences

The amount of snow needed to trigger an avalanche in the Himalayans can be up to four times smaller than in the Alps, according to a new model from a materials scientist at Queen Mary University of London.

The proposed universal model could have implications in better understanding strategies for mitigating natural hazards related to snow and and safeguarding people on mountain villages, roads and ski resorts.

By using a branch of mechanics that aims to understand how cracks spread in solid structures, Professor Nicola Pugno from Queen Mary's School of Engineering and Materials Science demonstrated that the snow needed to trigger an at 8,000m can be up to four times smaller than at half the height of 4,000m.

The Himalayans mountain range in Asia is home to some of the highest peaks in the world.

Professor Pugno said: "The research demonstrates that an avalanche on the Himalayas could be more dangerous than on the Alps, for instance, due to the larger size scales of the first mountains.

"Climbers need to understand that experience on one doesn't directly translate to another with higher peaks."

More information: 'The unacknowledged risk of Himalayan avalanches triggering' is published in The International Journal of Fracture.

Provided by Queen Mary, University of London

"New risk factors for avalanche trigger revealed." April 4th, 2014. http://phys.org/news/2014-04-factors-avalanche-trigger-revealed.html