气候变化领域集成服务门户(CCPortal): Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method

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DOI	10.1080/15230430.2020.1801149
	Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method
	Liu, Jia; Jiang, Guanli; Wu, Qingbai; Zhang, Tingjun; Gao, Siru
发表日期	2020
ISSN	1523-0430
EISSN	1938-4246
起始页码	450
结束页码	460
卷号	52 期号:1
英文摘要	Within the gas hydrate drilling project in the Qilian Mountain permafrost region, a temperature-depth profile measured from borehole DK-12 in Juhugeng of Muri Coalfield, Tianjun County, Qinghai Province, China, was analyzed to infer recent climate changes. The long-term surface temperature and thermal gradient were retrieved from borehole temperature measurements. The ground surface temperature (GST) changes were reconstructed by inversion of transient temperature perturbations through solving an inverse heat conduction problem using the Tikhonov method. Based on the instability of this kind of inverse problem and the nature of method-dependent features of borehole paleothermometry, we initially applied the Tikhonov regularization technique to obtain a stable past GST variation pattern with relatively low resolution. The inversion results showed that this region experienced temperature fluctuation with a total warming of 3 degrees C (+/- 1.6 degrees C) from 1400 to the 2010s and a more exacerbated warming starting from the 1960s. The GST trend fit the surface air temperature observation trend from the nearest Yeniugou meteorological station. This work fills the gap created by limited meteorological records in the Muli area and extends knowledge of ground surface temperature trends going back more than ten centuries.
英文关键词	Borehole paleothermometry; geothermal gradient; permafrost; Tikhonov regularization
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
WOS类目	Environmental Sciences ; Geography, Physical
WOS关键词	PERMAFROST ; RECORD ; REGULARIZATION ; HISTORIES ; GRADIENTS ; SNOW
WOS记录号	WOS:000574608000001
来源期刊	ARCTIC ANTARCTIC AND ALPINE RESEARCH
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/240301
作者单位	[Liu, Jia; Jiang, Guanli] China Geol Survey, Key Lab Unconvent Oil & Gas Geol, Beijing, Peoples R China; [Liu, Jia] Changan Univ, Sch Sci, Xian, Peoples R China; [Jiang, Guanli; Wu, Qingbai; Gao, Siru] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Jiang, Guanli] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Beiluhe Observat & Res Stn Frozen Soil Engn & Env, Lanzhou, Peoples R China; [Zhang, Tingjun] Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western China Environm Syst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jia,Jiang, Guanli,Wu, Qingbai,et al. Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method[J]. 中国科学院西北生态环境资源研究院,2020,52(1).
APA	Liu, Jia,Jiang, Guanli,Wu, Qingbai,Zhang, Tingjun,&Gao, Siru.(2020).Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method.ARCTIC ANTARCTIC AND ALPINE RESEARCH,52(1).
MLA	Liu, Jia,et al."Regional climate change signals inferred from a borehole temperature profile in Muli, Qilian Mountain, using the Tikhonov method".ARCTIC ANTARCTIC AND ALPINE RESEARCH 52.1(2020).