Page 82 - 2017地大报告电子书

2017

年 : SEP 27 2017

摘 要 ：The roles of groundwater flow in the hydrological cycle within the alpine area
characterized by permafrost and/or seasonal frost are poorly known. This study explored

the role of permafrost in controlling groundwater flow and the hydrological connections
between glaciers in high mountains and rivers in the low piedmont plain with respect to hydraulic

head, temperature, geochemical and isotopic data, at a representative catchment in the headwater
region of the Heihe River, northeastern Qinghai-Tibet Plateau. The results show that th

e groundwater in the high mountains mainly occurred as suprapermafrost groundwater,
while in the moraine and fluvioglacial deposits on the planation surfaces of higher

hills, suprapermafrost, intrapermafrost and subpermafrost groundwater cooccurred. Glacier and
snow meltwaters were transported from the high mountains to the plain through stream channels,

slope surfaces, and supra- and subpermafrost aquifers. Groundwater in the Quaternary aquifer
in the piedmont plain was recharged by thelateral inflow from permafrost areas and the stream

infiltration and was discharged as baseflow to the stream in the north.Groundwater maintained
streamflow over the cold season

and significantly contributed to the
streamflow during the warm season. Two

mechanisms were proposed to contribute
to the seasonal variation of aquifer

water-conduction capacity: (1) surface
drainage through the stream channel

during the warm period and (2) subsurface
drainage to an artesian aquifer confined by

stream icing and seasonal frost during the cold season.
论文链接：https://doi.org/10.5194/hess-21-4803-2017

14.Soret effect on the diffusion of CO2 in aqueous solution under high-pressure
作 者 : Guo Huirong*; Zhou Qian; Wang Zhe; Huang, Yiqi

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 卷 : 117 页 : 966-
971 出版年 : FEB 2018

摘 要 ：Diffusive dissolution processes of CO2 into aqueous solution subjecte
d to temperature gradients were investigated under 20 and 30 MPa in a silica capillary

tube. The temperature and concentration profiles were measured simultaneously by

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