Response of lower Yellow River bank breachings to La Nina events since 924 CE

doi:10.1016/j.catena.2019.01.012

	Response of lower Yellow River bank breachings to La Nina events since 924 CE
	Xu, Jiongxin 1; Li, Fuxing 2
刊名	CATENA
	2019-05-01
卷号	176 页码:159-169
关键词	Historical river changes River course shifting Hydrological effect of ENSO Yellow River
ISSN号	0341-8162
DOI	10.1016/j.catena.2019.01.012
通讯作者	Xu, Jiongxin(xujx@igsnrr.ac.cn)
英文摘要	The El Nino/Southern Oscillation (ENSO) is the dominant mode of inter-annual climate variability, strongly affecting summer precipitation and streamflow of large rivers. So far, no effort has been made to relate ENSO events with alluvial river stability. Based on the historical document of the lower Yellow River (LYR) and the data of previously reconstructed ENSO variability, the present study aims to establish the relation between the LYR's artificial levee breaching events (LBEs) and the ENSO events from 924 CE to 1938, and thereby reveal how river instability responds to climate change in millennial scale, for a better understanding of the coupling relation between the climate, hydrology and river channel changes. From 924 CE to 1938, there are 303 La Nina influenced years (ENSO variability < -0.5), of which 172 (56.8%) are related to the occurrence of LBE. We divided the reconstructed ENSO variability into 9 classes and calculated the LBE frequency for each class. We found that the LBE frequency is negatively correlated with class average value of ENSO variability, significant at p < 0.05. By relating the 21 major course shifting events (CSEs) of the LYR (924 CE to 1938) to the occurrence of La Nina influenced years, we found that 13 (61.9%) were influenced by La Nina. The decadal LBE frequency (F-b) and decadal average of ENSO amplitude show anti-phase variations since 1100 CE, with r = -0.356 (n = 82,p = 0.0010) after a linear detrending treatment. Through the control on summer rainfall and therefore on floods in the Yellow River, La Nina events influence the occurrence of the LBEs and CSEs in the LYR.
资助项目	National Natural Science Foundation of China[41330751] ; National Natural Science Foundation of China[41371037]
WOS关键词	SEA-SURFACE TEMPERATURE ; EL-NINO ; SOUTHERN-OSCILLATION ; TEMPORAL VARIATION ; ENSO ; RAINFALL ; MONSOON ; CHINA ; BASIN ; VARIABILITY
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000462107000013
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/48645]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Jiongxin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Land Surface Proc, Beijing 100101, Peoples R China 2.Hebei Normal Univ, Coll Resources & Environm Sci, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Xu, Jiongxin,Li, Fuxing. Response of lower Yellow River bank breachings to La Nina events since 924 CE[J]. CATENA,2019,176:159-169.
APA	Xu, Jiongxin,&Li, Fuxing.(2019).Response of lower Yellow River bank breachings to La Nina events since 924 CE.CATENA,176,159-169.
MLA	Xu, Jiongxin,et al."Response of lower Yellow River bank breachings to La Nina events since 924 CE".CATENA 176(2019):159-169.