气候变化领域集成服务门户(CCPortal): Long-term thermal effect of asphalt pavement on permafrost under an embankment

CCPortal

DOI	10.1016/j.coldregions.2009.10.007
	Long-term thermal effect of asphalt pavement on permafrost under an embankment
	Wu, Qingbai; Zhang, Zhongqiong; Liu, Yongzhi
发表日期	2010
ISSN	0165-232X
起始页码	221
结束页码	229
卷号	60 期号:3
英文摘要	Permafrost temperatures have been monitored through six boreholes drilled up to 15 m in depth under asphalt pavement along the centerline of an embankment along the Qinghai-Tibetan Highway. Temperatures have been measured twice monthly from 1996 through 2007. Soil temperatures at 1.0 m depth under asphalt pavement in the northern areas of the Tanggula Mountains have shown a significant increasing trend, but a significantly decreasing trend in the southern Tanggula Mountains during the period of record. Mean annual permafrost temperatures at 10 m depth have increased from 0.26 degrees C to 0.64 degrees C, with an average increase of about 0.39 degrees C from six monitoring sites during the period of record. The artificial permafrost table depth has increased significantly over the period of record for all six monitoring sites, varying from 0.16 to 2.6 m, with an average of 1.67 m. The heat accumulation produced by heat absorption of the asphalt pavement dominates the long-term thermal effect of asphalt pavement on permafrost. With permafrost thawing and permafrost temperature rise, thaw settlement increased significantly. The amount of thaw settlement is positively correlated with the permafrost thawing rate. A noteworthy feature is that lower temperature permafrost's response to climate change is more sensitive than to engineering; however, the response of high temperature permafrost to engineering is more sensitive than to climate change. (C) 2009 Elsevier B.V. All rights reserved.
英文关键词	Asphalt pavement; Long-term thermal effect; Soil/permafrost temperature; Artificial permafrost table
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	QINGHAI-TIBET HIGHWAY ; CHINA ; REGIONS ; REGIME
WOS记录号	WOS:000274369300006
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240206
作者单位	[Wu, Qingbai; Zhang, Zhongqiong; Liu, Yongzhi] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qingbai,Zhang, Zhongqiong,Liu, Yongzhi. Long-term thermal effect of asphalt pavement on permafrost under an embankment[J]. 中国科学院西北生态环境资源研究院,2010,60(3).
APA	Wu, Qingbai,Zhang, Zhongqiong,&Liu, Yongzhi.(2010).Long-term thermal effect of asphalt pavement on permafrost under an embankment.COLD REGIONS SCIENCE AND TECHNOLOGY,60(3).
MLA	Wu, Qingbai,et al."Long-term thermal effect of asphalt pavement on permafrost under an embankment".COLD REGIONS SCIENCE AND TECHNOLOGY 60.3(2010).