关键词: 冰缘地貌过程;含盐量;石花;条纹土;沉积结构

Abstract:

This paper deals with the periglacio-geomorphic processes on the Fildes Peninsula, King George Island, Antarctica. Based on the works of fixed repeated surveying, pitting, geoelectrical prospecting, artificial watering, geothermal measurement and the sample analysing, the authors discussed perigiacio-geomorphic processes and sediment structural feature of rock glacier, talus, sorted circles, debris flower, striated soil, and proved the influence of salty sediments to electric resistivity and substantial migration. Rock glacier and striated soil are active in summer season, stone circles can be divided into two types: beach gravel-type with convex-shaped table and debris type with bowl- shaped frost table. Resistivity of salty sediments can lowly reach to 2.9×10' -7×102Ω m. Those phenomena are concordant with the typical characteristics of Sub-Antarctic Island Type periglacial geomorphology. Finally, the problems of periglacial research work in this area are also pointed out by the authors.