Arid
DOI10.1016/j.scitotenv.2016.07.132
Recent climatic events controlling the hydrological and the aquifer dynamics at arid areas: The case of Huasco River watershed, northern Chile
Salas, I.1,2; Herrera, C.2,3; Luque, J. A.2,3; Delgado, J.1; Urrutia, J.2,3; Jordan, T.4,5
通讯作者Herrera, C.
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2016
卷号571页码:178-194
英文摘要

The investigation assesses the influence of recent climatic events in the water resources and the aquifer dynamics in the Huasco watershed by means of the analysis of precipitation, streamflow and piezometric levels during the last 50 years. These hydrological and hydrogeological parameters were evaluated by an exploratory geostatistical analysis (semivariogram) and a spectral analysis (periodogram). Specifically, the hydrological and hydrogeological data analyses are organized according to three sub-basins, the Del Carmen River (Section I), the El Transit River (Section II), and the Huasco River (Section III). Data ranges for rainfall are from 1961 to 2015, for streamflow from 1964 to 2015, and for groundwater levels from 1969 to 2014, available from Water Authority of Chile. The analyses allowed the identification of cycles in the hydrological and hydrogeological records. The study area is located in a transient climatic fringe where the convergence of several climatic systems can be identified in the hydrological and hydrogeological records. Results indicate that the nival areas and the small glaciers are especially important to the recharge processes in the Huasco watershed during the spring-summer snowmelting. Water reservoirs in the main aquifer (Section III) and in the Santa Juana dam are highly sensitive to ENSO oscillation climatic pattems. The main climatic events that control this record are the El Nina and La Nina events. In addition, the climatic influence of the westerlies and the SE extratropical moisture were also identified. Spectral analysis identified the presence of a 22.9-year cycle in piezometric levels of the alluvial aquifer of the Huasco River. This cycle is consistent with the 22-year Hale solar cycle, suggesting the existence of a solar forcing controlling the ENSO oscillations. Moreover, semivariogram and spectral analysis identified a 10.65-year cycle and a 9.2-year cycle in groundwater, respectively, which were attributed to the strong mode Of ENSO oscillations. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Huasco aquifer Arid zone Enso Piezometric oscillations Spectral analysis Geoestatistics
类型Article
语种英语
国家Chile ; USA
收录类别SCI-E
WOS记录号WOS:000383930400021
WOS关键词EL-NINO ; CENTRAL ANDES ; VARIABILITY ; EVOLUTION ; SPAIN ; PRECIPITATION ; RECORD ; FUTURE ; REGION ; BASIN
WOS类目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/2XILL650/196249
作者单位1.Univ Antofagasta, Dept Min Engn, Antofagasta, Chile;
2.Univ Catolica Norte, Dept Ciencias Geol, Antofagasta, Chile;
3.Univ Catolica Norte, CEITSAZA Ctr Invest Tecnol Agua Desierto, Antofagasta, Chile;
4.Cornell Univ, Dept Earth & Atmospher Sci, Snee Hall, Ithaca, NY 14853 USA;
5.Cornell Univ, Atkinson Ctr Sustainable Future, Snee Hall, Ithaca, NY 14853 USA
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Salas, I.,Herrera, C.,Luque, J. A.,et al. Recent climatic events controlling the hydrological and the aquifer dynamics at arid areas: The case of Huasco River watershed, northern Chile[J],2016,571:178-194.
APA Salas, I.,Herrera, C.,Luque, J. A.,Delgado, J.,Urrutia, J.,&Jordan, T..(2016).Recent climatic events controlling the hydrological and the aquifer dynamics at arid areas: The case of Huasco River watershed, northern Chile.SCIENCE OF THE TOTAL ENVIRONMENT,571,178-194.
MLA Salas, I.,et al."Recent climatic events controlling the hydrological and the aquifer dynamics at arid areas: The case of Huasco River watershed, northern Chile".SCIENCE OF THE TOTAL ENVIRONMENT 571(2016):178-194.
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