BTS method
Link: http://w3id.org/permafrost/v/ipaglossary/t0032
Within: IPA Permafrost Glossary
Definition: Method to predict the presence or absence of permafrost in a mountain area, using measurements of the bottom temperature of snow cover in mid- to late-winter.
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BTS method
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Snow cover, with its low thermal conductivity, insulates the soil from short- term fluctuations in air temperature. In those mountain areas where snow-cover thickness equals or exceeds 1 m and surface melting is still negligible in mid- to late-winter, BTS values remain virtually constant, mainly controlled by heat transfer from the upper ground layers, which in turn is strongly influenced by the presence or absence of permafrost. According to published data, BTS values below -3?C, between -3?C and -1.7?C, and above -1.7C? suggest, respectively, the presence, possible presence, and absence of permafrost.
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| dcterms:source |
https://doi.org/10.4224/20386561
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