Avalanche Tarns
Abstract Avalanche tarns are a particular morphological form of avalanche impact and sixteen of these features are described from the Fiordland region of New Zealand. Average area of the tarns is 11000 m 2 . Profiles are given for eight of the avalanche paths where such tarns occur. All are found at...
| Published in: | Journal of Glaciology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1984
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0022143000006146 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006146 |
| Summary: | Abstract Avalanche tarns are a particular morphological form of avalanche impact and sixteen of these features are described from the Fiordland region of New Zealand. Average area of the tarns is 11000 m 2 . Profiles are given for eight of the avalanche paths where such tarns occur. All are found at the base of very steep avalanche tracks (slopes 38–59 ° ), where there are no fans, so that there is an abrupt change of slope with the valley floor. The plunging avalanches which cause the tarns may have a mass of up to 300000 tonnes and impact pressures of more than 600 kN/m 2 , although no direct measurements are available. |
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