气候变化领域集成服务门户(CCPortal): Multi-annual response of a Pampean shallow lake from central Argentina to regional and large-scale climate forcings

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DOI	10.1007/s00382-018-4548-x
	Multi-annual response of a Pampean shallow lake from central Argentina to regional and large-scale climate forcings
	Guerra L.; Martini M.A.; Córdoba F.E.; Ariztegui D.; Piovano E.L.
发表日期	2019
ISSN	0930-7575
起始页码	6847
结束页码	6861
卷号	52 期号:11
英文摘要	The Pampean Plains comprise a flat area of southeastern South America (SESA), encompassing the most populated and productive area of Argentina. Several floods and droughts have been reported in the region during the last 50 years affecting lakeshore villages. In spite of the well-known importance of monitoring hydrological systems in flood-risk areas, long series of instrumental limnimetric data are sparse in the Pampean Plains. Lake Melincué (33°43′S/61°28′W), located in the center of this region, provides a valuable record of the annual lake-area oscillations from 1965 to 2015. In this study we analyze the lake area variability at different time-scales, from intra-annual to multi-annual, investigating the persistence and the frequencies of the series. Our results show that the lake area oscillates following a significant quasi-bidecadal periodicity. A secondary 13 years-frequency signal was detected since the 1970s, when a dramatic increase in Lake Melincué area occurred, associated with a shift to humid conditions in SESA. The analysis of meteorological series suggests that lake area variations are controlled by precipitation and evaporation with different time-lags. Further comparisons of the lake area fluctuations with climate indices from the Pacific and Atlantic oceans provide evidence of the link between the dynamic of lakes in the Pampean Plains and both large-scale climate circulation and low-frequency phenomena. These results confirm that a regular monitoring of these shallow lake systems and the analysis of high-resolution reliable data on inland water environments of the Pampean Plains is fundamental for anticipating their hydrological responses to forecasted climate changes. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Forcings; Lake area fluctuations; Pampean Plains; Shallow lake
语种	英语
scopus关键词	annual variation; climate change; climate forcing; frequency analysis; hydrological response; lake; periodicity; persistence; regional climate; Argentina; Melincue Lake; Santa Fe [Argentina]; Sierras Pampeanas
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146249
作者单位	Department of Earth Sciences, University of Geneva, 13 rue des Maraîchers, Geneva, 1205, Switzerland; Centro de Investigaciones en Ciencias de la Tierra (CONICET-Universidad Nacional de Córdoba), Avenida Vélez Sarsfield 1611, Córdoba, X5016GCA, Argentina; Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, Córdoba, X5016GCA, Argentina; Instituto de Ecorregiones Andinas (INECOA, CONICET-UNJu), Instituto de Geología y Minería, Universidad Nacional de Jujuy, Av. Bolivia 1661, San Salvador de Jujuy, Jujuy Y4600GNE, Argentina
推荐引用方式 GB/T 7714	Guerra L.,Martini M.A.,Córdoba F.E.,et al. Multi-annual response of a Pampean shallow lake from central Argentina to regional and large-scale climate forcings[J],2019,52(11).
APA	Guerra L.,Martini M.A.,Córdoba F.E.,Ariztegui D.,&Piovano E.L..(2019).Multi-annual response of a Pampean shallow lake from central Argentina to regional and large-scale climate forcings.Climate Dynamics,52(11).
MLA	Guerra L.,et al."Multi-annual response of a Pampean shallow lake from central Argentina to regional and large-scale climate forcings".Climate Dynamics 52.11(2019).