气候变化领域集成服务门户(CCPortal): The extent of permafrost during the Last Permafrost Maximum (LPM)on the Ordos Plateau; north China

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DOI	10.1016/j.quascirev.2019.04.019
	The extent of permafrost during the Last Permafrost Maximum (LPM)on the Ordos Plateau; north China
	Vandenberghe J.; French H.M.; Jin H.; Wang X.; Yi S.; He R.
发表日期	2019
ISSN	0277-3791
起始页码	87
结束页码	97
卷号	214
英文摘要	This paper presents new field observations that assist in further defining the extent of Last Permafrost Maximum (LPM)permafrost and frozen ground in north China. In that respect, this region is specific by its arid environment and continental position. Bedrock exposures and sand and gravel pits were examined along a south-north transect from southern Ordos as far as the vicinity of Dongsheng District, Ordos City on the Ordos Plateau (North China). Attention focussed upon the recognition of sand-wedge remains and possible cryoturbations. Two types of wedge structures were recognized: type A wedges extend to depths in excess of 3.0 m and are thought to have formed under conditions of continuous permafrost. Type B wedges are restricted to the upper 1.5 m and are thought to reflect discontinuous permafrost and/or deep seasonal frost. OSL dating of wedge infills indicates that type A wedges formed between 23–19 ka and younger type B wedges formed until the early Holocene. It is now possible to delineate a more exact position of the boundary between continuous permafrost and discontinuous permafrost and/or deep seasonal frost on the Ordos Plateau during the LPM. This boundaries occur between Dongsheng and Jinbian at 37°-39°N. © 2019 Elsevier Ltd
英文关键词	China; Dongsheng; Last permafrost maximum; Ordos; Permafrost; Permafrost extent; Sand wedge; Sand-wedge cast
语种	英语
scopus关键词	Landforms; Mining laws and regulations; Sand; Arid environments; China; Discontinuous permafrost; Dongsheng; Field observations; Last permafrost maximum; Ordos; Sand and gravels; Permafrost; arid environment; bedrock; dating method; frozen ground; pattern recognition; permafrost; sand; sand and gravel; China; Dongsheng; Nei Monggol; Ordos Plateau
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151922
作者单位	Institute of Earth Sciences, Vrije Universiteit Amsterdam, Netherlands; Departments of Geography and Earth Sciences, University of Ottawa, Ontario, Canada; Department of Geography, University of VictoriaBritish Columbia, Canada; State Key Laboratory of Frozen Soils Engineering, Cold and Arid Regions Environmental Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Civil Engineering, Harbin Institute of Technology, Harbin, 150090, China; School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
推荐引用方式 GB/T 7714	Vandenberghe J.,French H.M.,Jin H.,et al. The extent of permafrost during the Last Permafrost Maximum (LPM)on the Ordos Plateau; north China[J],2019,214.
APA	Vandenberghe J.,French H.M.,Jin H.,Wang X.,Yi S.,&He R..(2019).The extent of permafrost during the Last Permafrost Maximum (LPM)on the Ordos Plateau; north China.Quaternary Science Reviews,214.
MLA	Vandenberghe J.,et al."The extent of permafrost during the Last Permafrost Maximum (LPM)on the Ordos Plateau; north China".Quaternary Science Reviews 214(2019).