干旱区生态环境知识资源中心(Arid): Predicting adverse scenarios for a transboundary coastal aquifer system in the Atacama Desert (Peru/Chile)

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DOI	10.1016/j.scitotenv.2021.150386
	Predicting adverse scenarios for a transboundary coastal aquifer system in the Atacama Desert (Peru/Chile)
	Narvaez-Montoya, Christian; Antonio Torres-Martinez, Juan; Pino-Vargas, Edwin; Cabrera-Olivera, Fredy; Loge, Frank J.; Mahlknecht, Jurgen
通讯作者	Mahlknecht, J (corresponding author), Escuela Ingn & Ciencias, Tecnol Monterrey, Eugenio Garza Sada 2501, Monterrey 64849, Nuevo Leon, Mexico.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	806
英文摘要	The Caplina/Concordia transboundary coastal aquifer system, located in the Atacama Desert, is the primary source of water supply for domestic use and irrigation for La Yarada-Los Palos (Peru) and Concordia (Chile) agriculture districts, and to a lesser extent, for Tacna province public supply use (Peru). Despite the scarce amount of rainfall (<20 mm/year) in the area and the limited recharge coming from the Andean highlands, this transboundary aquifer system has been overexploited mainly for agriculture since before the 2000s on the Peruvian side. Consequently, this has caused groundwater depletion and seawater intrusion. In this study, comprehensive hydrogeological information was integrated to understand the aquifer system's behavior and the effects to which it has been subjected to groundwater overexploitation. To that end, a 3D hydrogeological framework was developed using the LEAPFROG software and a constant-density groundwater flow model with equivalent heads was generated in FEFLOW software, which was adjusted with Monte Carlo analysis and conventional automated calibration. Finally, eight scenarios, considering various water resource management options proposed by the authority and potential climatic trends (CMIP6), were simulated from 2020 to 2040. The results showed that between 2002 and 2020, the increase in the seawater wedge and the average groundwater level decline were 216 hm3/year and 7 m, respectively. It is expected that the depletion will continue with a groundwater level decline between 5 and 8 m and an increase in the seawater wedge between 1120 hm3/year and 1175 hm(3)/year for the forecast period. The study concludes that the aquifer system will remain unsustainable for the next 20 years, regardless of the selected scenarios, and suggests that any mitigation measure requires the participation of stakeholders from Peru, Chile, and Bolivia. (C) 2021 The Authors. Published by Elsevier B.V.
英文关键词	Groundwater overexploitation Seawater intrusion Hydrogeological modeling Andes-Atacama CMIP6 Calibration
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000701843800003
WOS关键词	GROUNDWATER-FLOW ; PERU
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364632
作者单位	[Narvaez-Montoya, Christian; Antonio Torres-Martinez, Juan; Mahlknecht, Jurgen] Escuela Ingn & Ciencias, Tecnol Monterrey, Eugenio Garza Sada 2501, Monterrey 64849, Nuevo Leon, Mexico; [Pino-Vargas, Edwin; Cabrera-Olivera, Fredy] Univ Nacl Jorge Basadre Grohmann, Fac Ingn Civil Arquitectura & Geotecnia, Av Miraflores S-N, Tacna 23000, Peru; [Loge, Frank J.] Univ Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Narvaez-Montoya, Christian,Antonio Torres-Martinez, Juan,Pino-Vargas, Edwin,et al. Predicting adverse scenarios for a transboundary coastal aquifer system in the Atacama Desert (Peru/Chile)[J]. University of California, Davis,2022,806.
APA	Narvaez-Montoya, Christian,Antonio Torres-Martinez, Juan,Pino-Vargas, Edwin,Cabrera-Olivera, Fredy,Loge, Frank J.,&Mahlknecht, Jurgen.(2022).Predicting adverse scenarios for a transboundary coastal aquifer system in the Atacama Desert (Peru/Chile).SCIENCE OF THE TOTAL ENVIRONMENT,806.
MLA	Narvaez-Montoya, Christian,et al."Predicting adverse scenarios for a transboundary coastal aquifer system in the Atacama Desert (Peru/Chile)".SCIENCE OF THE TOTAL ENVIRONMENT 806(2022).