Ionic migration and weathering in frozen antarctic soils
1973
Ugolini, Fiorenzo C. | ANDERSON, DUWAYNE M.
Soils of continental Antarctica are forming in one of the most severe terrestrial environments. Continously low temperatures and the scarcity of water in the liquid state result in the development of desert-type soils. In an earlier experiment to determine the degree to which radioactive NaCl would migrate from a shallow point source in permafrost, movement was observed. To confirm this results, a similar experiment involving NaCl has been conducted. Significantly less movement of the Na ion was observed. Ionic movement in the unfrozen interfacial films at mineral surfaces in frozen ground is held to be important in chemical weathering in Antarctic and other desert soils.
显示更多 [+] 显示较少 [-]