摘要
根据新疆阿尔泰山哈纳斯河流域及其邻域第四纪冰川遗迹的类型和特征,哈纳斯河流域第四纪时期至少发生过5次明显的冰川事件,即倒数第三冰期,倒数第二冰期,倒数第一冰期(末次冰期),新冰期和小冰期。其中,更新世的3次冰川作用规模巨大,倒数第三冰期的冰川呈半覆盖式,倒数第二冰期和倒数第一冰期时发育了长达96km以上的大型山谷冰川。古冰川属于冰温高、活动性大和侵蚀能力强的温冰川。从新到老,每次冰期的雪线下降幅度一次比一次大。
Based on the Quaternary glacial remains and their characteristics in the Halasi River catchment and its surroundings in the Altai Mountains in Xingjiang of China. It was found that there existed five ancient glaciated stages during Quaternary period. They are the third Glacial Stage, the second Glacial Stage and the Last Glacial Stage in pleistocene, and Neoglaciation and Little Ice Age in Hdocene. The three pleistocene glaciations had a massive scale with ice-capped glaciers. During the third Glacial Stage the main valley was fully occupied by the glaciers with the altitade range from 1 900 m to 2 200 m. The large valley glaciers with the length more than 96 km developed during the second and the Last Glacial Stage. The plaistocene glaciers belonged to temperate type with high ice temperature, the great activity and strong erosion. From the old ice stage to new one, the snowline rose higher and higher.
出处
《冰川冻土》
CSCD
北大核心
1992年第4期342-351,共10页
Journal of Glaciology and Geocryology
关键词
第四纪
冰川作用
哈纳斯河流
流域
Quaternary glacial remains, division of glaciations, Halasi River catchment, Altai Mountains in China
