干旱区生态环境知识资源中心(Arid): Misfit rivers under ENSO regimes: The deactivation of the Colorado River system of Argentina

Arid

DOI	10.1016/j.jaridenv.2021.104474
	Misfit rivers under ENSO regimes: The deactivation of the Colorado River system of Argentina
	Isla, Federico Ignacio; Espinosa, Marcela A.
通讯作者	Isla, FI (corresponding author), UNMDP, Inst Geol Costas & Cuaternario, Inst Invest Marinas & Costeras, CONICET,CIC, Mar Del Plata, Argentina.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	188
英文摘要	The Colorado River has significantly diminished its drainage area and annual discharge. Today it flows across several provinces of Argentina (Neuquen, Mendoza, La Pampa, Rio Negro and Buenos Aires) although during the Upper Pleistocene this watershed area was more extended. Its discharge also diminished significantly during documented times although floods occurred episodically during anomalous ENSO years. The delta plain is composed of several lobes of different ages. Four distributary arms were operating during the Mid-Holocene highstand. At the northernmost distributary arm, Tagelus plebeius remains of 350 +/- 50 C-14 years BP were collected living in position on the supratidal flat. Close to this modern channel several foredune ridges were recognised. A blocking of the river occurred in 1906, and originated a conic lobe located 36 km from the present shoreline. Due to a flood caused by a sudden scabland of the Cari Lauquen Lake in 1914, the blockage opened. Another blockage was achieved between 1924 and 1925, but another flood in 1931 originated a new arm: the Colorado Nuevo. The ENSO-triggered flood of 1983 signified the last connection of the Desaguadero-Curaco? River system. Man-made alterations are responsible for the increase in salinity along the lower floodplain and increasing the risk of onion crops. These particular processes of desertification with floods should be monitored in relation to climate-change previsions.
英文关键词	Misfit rivers Paleohydrology ENSO events Colorado river Argentina
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000632490200003
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350689
作者单位	[Isla, Federico Ignacio; Espinosa, Marcela A.] UNMDP, Inst Geol Costas & Cuaternario, Inst Invest Marinas & Costeras, CONICET,CIC, Mar Del Plata, Argentina
推荐引用方式 GB/T 7714	Isla, Federico Ignacio,Espinosa, Marcela A.. Misfit rivers under ENSO regimes: The deactivation of the Colorado River system of Argentina[J],2021,188.
APA	Isla, Federico Ignacio,&Espinosa, Marcela A..(2021).Misfit rivers under ENSO regimes: The deactivation of the Colorado River system of Argentina.JOURNAL OF ARID ENVIRONMENTS,188.
MLA	Isla, Federico Ignacio,et al."Misfit rivers under ENSO regimes: The deactivation of the Colorado River system of Argentina".JOURNAL OF ARID ENVIRONMENTS 188(2021).