thermo-erosional niche
Link: http://w3id.org/permafrost/v/ipaglossary/t0367
Within: IPA Permafrost Glossary
Definition: A recess at the base of a river bank or coastal bluff, produced by thermal erosion of ice-bonded permafrost (see Figure 22d).
| Term |
thermo-erosional niche
en
niche d'érosion thermique fr |
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| Comment |
A niche may extend more than 10 m into a river bank or coastal bluff.Subsequently, the undercut sediments may collapse along a line of weakness, such as an ice wedge, destroying the niche. Niche development and bank/bluff collapse is a unique mechanism of erosion in permafrost regions. Very rapid coastal or bank retreat can occur if collapse debris is removed by waves or water currents.
en
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| dcterms:source |
https://doi.org/10.4224/20386561
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