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冰川冻土 ›› 1981, Vol. 3 ›› Issue (3): 58-62.

• 研究论文 • 上一篇    下一篇

青藏高原清水河两岸的冻胀丘

王绍令, 姚河清   

  1. 中国科学院兰州冰川冻土研究所
  • 收稿日期:1980-12-23 出版日期:1982-08-25 发布日期:2012-04-26

ON THE PINGOS ALONG BOTH BANKS OF THE QING-SHUI RIVER ON QINGHAI-XIZANG PLATEAU

Wang Shading, Yao Heqing   

  1. Lanzhou Institute of Glaciolody and Cryopedology, Academic Sinica
  • Received:1980-12-23 Online:1982-08-25 Published:2012-04-26

摘要: 清水河两岸地形起伏,地面呈丘状或垅岗状,地表相对高差2—5米,有些垅丘已被风沙覆盖,植被茂密;而大多数垅丘上植被稀疏,灰白色亚粘土裸露,结构致密,表层干燥,丘顶偶见被砂及植物根系所充填的裂缝。这种地形发育在河两岸宽300—500米,顺河延伸10公里的范围内。经1980年现场调查,已确认上述的垅丘是高原上又一种类型的冻胀丘(图1)。

Abstract: This paper discussed the distributive rules and characteristics of the pingos on the banks of Qing-shui River.It was found that the genesis and the development history of the pingos were directly related to the movement of the riverbed and the evolution of the lakes on both sides of it.The pingos had been developed on lacustrine deposits in nonpenetrative-taliks with less water resource, low water pressure, and thin ice layer. They are small in individual size, and have a shape of a ridge or an ellipse. A series of pingos may be in the form of a " snakelike hillock " on surface ground. Finally, the genesis conditions and processes of the pingos had been discussed.