巴丹吉林沙漠季节冻土特征

doi:10.7522/j.isnn.1000-0240.2015.0135

摘要/Abstract

摘要： 通过巴丹吉林沙漠腹地连续的地温观测和2014年1月的专题考察,发现巴丹吉林沙漠属于季节冻土区,年冻结时间长达4个月.沙漠内部的局地地形和湖泊分布是影响季节冻土分布差异的重要因素.迎风坡和背风坡冻土冻结深度显著大于丘间地冻结深度,湖泊的存在使湖泊周边地区最大冻结深度显著变浅.通过沙漠及其周边地区地温、气温、地气温差的分析,结合我们在巴丹吉林沙漠外围发现的末次冰期砂楔群,表明我国北方沙漠在末次冰期属于不连续的多年冻土区.

关键词: 巴丹吉林沙漠, 季节冻土, 地温, 古砂楔, 末次冰期多年冻土区

Abstract: Through continuous ground temperature monitoring in Badain Jaran Desert hinterland and professional investigation, it is found that Badain Jaran Desert belongs to seasonal frozen soil area with freezing duration of four mouths a year. Local topography and lakes are the key factors controlling the distribution of seasonal frozen soil area. The maximum frozen depth of seasonal frozen soil in the windward slopes and leeward slopes is obviously greater than that in the fields among the hills. The maximum depth of seasonal frozen soil around a lake is obviously shallower. By comparing the ground temperature and air temperature around the Badain Jaran Desert with those in Badain Jaran Desert hinterland and considering the discovery of sand wedge group around the desert, it is clearly that the desert in northern China belonged to discontinuous permafrost region in the Last Glaciation.

Key words: Badain Jaran Desert, seasonal frozen ground, ground temperature, ancient sand wedges, permafrost in the Last Glaciation

中图分类号:

P532

宁凯, 王乃昂, 胡文峰, 张洵赫, 孙杰, 王旭. 巴丹吉林沙漠季节冻土特征[J]. 冰川冻土, 2015, 37(5): 1209-1216.

NING Kai, WANG Naiang, HU Wenfeng, ZHANG Xunhe, SUN Jie, WANG Xu. Characteristics of the seasonal frozen ground in Badain Jaran Desert[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(5): 1209-1216.

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