Estimating interaction between surface water and groundwater in a permafrost region of the northern Tibetan Plateau using heat tracing method

作者：TanGuang Gao,Jie Liu,TingJun Zhang,ShiChang Kang,ChuanKun Liu,ShuFa Wang,Mika Sillanpaa,YuLan Zhang

摘要：Understanding the interaction between groundwater and surface water in permafrost regions is essential to study flood frequencies and river water quality, especially in the high latitude/altitude basins. The application of heat tracing method,based on oscillating streambed temperature signals, is a promising geophysical method for identifying and quantifying the interaction between groundwater and surface water. Analytical analysis based on a one-dimensional convective-conductive heat transport equation combined with the fiber-optic distributed temperature sensing method was applied on a streambed of a mountainous permafrost region in the Yeniugou Basin, located in the upper Heihe River on the northern Tibetan Plateau. The results indicated that low connectivity existed between the stream and groundwater in permafrost regions.The interaction between surface water and groundwater increased with the thawing of the active layer. This study demonstrates that the heat tracing method can be applied to study surface water-groundwater interaction over temporal and spatial scales in permafrost regions.

發文機構：Key Laboratory of Western China's Environmental Systems（Ministry of Education） Institute of Water Sciences State Key Laboratory of Cryospheric Science CAS Center for Excellence in Tibetan Plateau Earth Sciences Department of Civil and Environmental Engineering Florida International University Miami

關鍵詞：surfacewaterGROUNDWATERPERMAFROSTheatTRACINGMETHODTIBETANPlateau

分類號： P64[天文地球—地質礦產勘探][天文地球—地質學]