天山乌鲁木齐河源地区电测深资料的推断

Explanation of Electrical D. C. Resistivity Sounding at the Head Waters of Urumqi River, Tianshan

解释1989年在乌鲁木齐河源地区完成的12个直流电测深曲线,得到以下一些结果:大西沟气象站附近(海拔3540m左右)多年冻土厚度为50—70m,空冰斗内(3870m左右)冻层厚度增大到90—100m。5号石冰川表现出高的电阻率,可能岩屑富含孔隙冰。1号冰川东北冰舌末端当年消融退缩的地段内含有接近2m厚的埋藏冰川冰,而在4—5年前形成的前碛中,埋藏冰川冰体已消融掉。

The thicknees explanation of 12 curves of electrical D. C. resistivity sounding obtained from the head of Urumqi River leads to the following conclusions: 1. The thicknees of permafrost is about 50-70 m at the sites around the Daxigou Meteorological Station (about 3 540 m a. s.l.), and increases to 90 or 100 m in the empity cirques (about 3 870 m a.s.l.). 2. The high resistivity of the No. 5 rock glacier implies a high ice content in the pore of the rock glacier. 3. There is a buried glacial ice body with the thicknees of 2 m at the site just exposed from the ice tongue of Glacier No. 1. The buried ice body in the moraine, however, formed 4 or 5 years ago has been melt already.