4Murton J B. Global Warming and Thermokarst[D]. Brigh ton, UK: Department of Geography, University of Sussex, 2009.
5Lin Zhanju, Niu Fujun, Xu Zhiying, et al. Thermal regime of a thermokarst lake and its influence on permafrost, Beiluhe Basin, Qinghai Tibet Plateau[J]. Permafrost and Periglacial Processes, 2010, 21: 315-324.
6Ling F, Zhang T. Numerical simulation of permafrost ther mal regime and talik development under shallow thaw lakes on the Alaskan Arctic Coastal Plain[J]. Journal of Geophysical Research, 2003, 108(16): 26-36.
7Weeks W F, Fountain A G, Bryan M L, et al. Difference in radar returns from ice covered North Slope lakes[J]. Journal of Geophysical Research, 1978, 83(C8): 4069-4073.
8Johnston G H, Brown R J E. Some observations on perma- frost distribution at a lake in the Mackenzie delta, N. W. T. , Canada[J]. Arctic, 1964, 17: 162-175.
9Wu Tonghua, Li Shuxun, Cheng Guodong, et al. Using ground-penetrating radar to detect permafrost degradation in the northern limit of permafrost on the Tibetan Plateau[J]. Cold Regions Science and Technology, 2005, 41: 211-219.
10J. van der Kruk,E.C. Slob,J.T. Fokkema. Background of ground penetrating radar measurements[J] 1998,Geologie en Mijnbouw(2):177～188
