Photoglossary

Strain

The amount by which an object becomes deformed as a result of stress, which in glaciers may take place over many years or even millennia.

Deformed, water-filled moulin on Unteraargletscher, Switzerland. Strain in the glacier has deformed an originally more-or-less cylindrical moulin into a shape that is elliptical in cross-section. Photo J. Alean.

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