Abstracts for the 5th International GAME Conf.
3-5 October 2001
Aichi Trade Center
Nagoya Japan
DEGRADATION OF PERMAFROST GEOSYSTEMS IN RESPONSE TO CLIMATE CHANGE AND HUMAN ACTIVITIES
Gavriliev, Peter (1), Ugarov Innokentyi (1)
(1) Melnikov Permafrost Institute, Russian Academy of Sciences
In Central Yakutia, about 70-80% of the land underlain by ice-rich permafrost (the ice complex) is subjected to anthropogenic impact.
0.06 and 0.09C/yr deduced from the 1965-1995 air temperature records, we have estimated thaw inertia of the ice-rich permafrost (t) to be 7.12, 19, 18, and 51 years for the mean annual ground temperatures tav -0.5, -1, -2, -3C, respectively. If the current warming trend (Dt 3 0.09C/yr) continues, irreversible thawing of the permafrost and wedge ice to the depth of 10-15 m and the development of large thermokarst pits and lakes are expected.
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Melnikov Permafrost Institute, Russian Academy of Sciences | |
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Yakutsk-10, Permafrost Institute | |
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