Photoglossary

Ogives

Arcuate bands or waves, with their apices pointing down-glacier, that develop in an icefall. Alternating light and dark bands are called band ogives or Forbes bands. Each pair of bands, or one wave and trough, is believed to represent a year’s movement through the icefall.

Ogives on Svinafellsjökull, southern Iceland. Photo J. Alean, 2001.

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