The impact of surface energy exchange on the thawing process of active layer over the northern Qinghai-Xizang Plateau, China (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	The impact of surface energy exchange on the thawing process of active layer over the northern Qinghai-Xizang Plateau, China (SCI)
	Li R. ; Zhao L. ; Wu T. H. ; Ding Y. J. ; Xiao Y. ; Hu G. J. ; Zou D. F. ; Li W. P. ; Yu W. J. ; Jiao Y. L. ; Qin Y. H.
刊名	Environmental Earth Sciences
	2014
卷号	72 期号:6 页码:2091-2099
英文摘要	In this study, we collected radiation and active layer temperature data observed in the northern Qinghai-Xizang Plateau during the period 2006-2008 in order to analyze the impact of surface energy balance on the thawing process of the active layer. Results show that surface energy exhibits an obvious seasonal variation. The largest values of energy variables including global radiation, net radiation, soil heat flux and surface heat source intensity occur during June and July, while the smallest values occur in November and December. The active layer is generally dominated by an endothermic process. During the freeze-thaw period, the variation process of the active layer temperature is similar to that of surface energy. The seasonal thawing depth is closely related to the process of surface energy exchange. During the thawing period, seasonal thawing depth gradually increases as more solar energy enters the surface. When the surface energy accumulation is 0.0 MJ m(-2) d(-1), the seasonal thawing depth is the smallest. The seasonal thawing depth gradually increases with further accumulation of surface energy. Thus, the variation processes between the surface energy and seasonal thawing depth can be expressed by a power relation. The values of seasonal thawing depth calculated with the empirical relationship provided in this study agree well with the observed values. The relative error between calculated and observed values is less than 12 %. These results show that this empirical relationship can be successfully used to describe the behavior of active layers.
收录类别	SCI
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/25095]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Li R.,Zhao L.,Wu T. H.,et al. The impact of surface energy exchange on the thawing process of active layer over the northern Qinghai-Xizang Plateau, China (SCI)[J]. Environmental Earth Sciences,2014,72(6):2091-2099.
APA	Li R..,Zhao L..,Wu T. H..,Ding Y. J..,Xiao Y..,...&Qin Y. H..(2014).The impact of surface energy exchange on the thawing process of active layer over the northern Qinghai-Xizang Plateau, China (SCI).Environmental Earth Sciences,72(6),2091-2099.
MLA	Li R.,et al."The impact of surface energy exchange on the thawing process of active layer over the northern Qinghai-Xizang Plateau, China (SCI)".Environmental Earth Sciences 72.6(2014):2091-2099.