An earthquake or a snow avalanche has its own shape

Predicting earthquakes or snow avalanches is difficult, but to for instance reduce the related risks it is of high importance to know if an avalanche event is big or small. Researchers from Aalto University in Finland have, together with colleagues from Oslo and ENS, Lyon, found that such events or say the acoustic sound bursts coming from the tearing of paper have a typical form independent of whether they are big or small.

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