(Article of periodic en Anglais - 2014)

Document title

Mapping permafrost features that influence the hydrological processes of a thermokarst lake on the Qinghai-Tibet Plateau, China

Authors(s) and Affiliation(s)

PAN X. (1 2) ; YOU Y. (1) ; ROTH K. (2) ; GUO L. (1) ; WANG X. (1) ; YU Q. (1) ;
(1) Lab. of Frozen Soils Engineering, Cold and Arid Regions Environmental and Engineering Research Inst., CAS, Lanzhou, CHINE
(2) Inst. of Environmental Physics, Univ., Heidelberg, ALLEMAGNE


The AA. employed ground-penetrating radar (GPR) profiling, topographic mapping and drilling to explore the interaction between hydrological processes and thermokarst lake development at a site on the Qinghai-Tibet Plateau (QTP). The GPR data and borehole water-level measurements revealed spatio-temporal variation of the frost table and soil water storage, and indicated the main direction of subsurface flow through soil on hillslopes near the lake. The measurements hinted at the self-organised formation of lateral flow channels at the thawing frost table near the lake. The ensuing recharge of the lake is balanced by drainage from the deepest end of the lake, down the topographic gradient, as ascertained by coring and lake bed mapping. Such a process-based qualitative understanding is crucial for assessing the impact of climate change, in conjunction with the local topography and hydrogeology, on the evolution of thermokarst lakes on the QTP


Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2014, vol. 25, no1 [pp. 60-68]

Bibliographic references : 1 p.

Collation : 8 fig.



Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1797

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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