干旱区生态环境知识资源中心(Arid): Factors controlling groundwater salinization processes in coastal aquifers in semiarid environments of north Patagonia, Argentina

Arid

DOI	10.1016/j.jsames.2021.103356
	Factors controlling groundwater salinization processes in coastal aquifers in semiarid environments of north Patagonia, Argentina
	Carol, Eleonora Silvina; Alvarez, Maria del Pilar; Tanjal, Carolina; Bouza, Pablo Jose
通讯作者	Carol, ES (corresponding author), UNLP, CONICET, Ctr Invest Geol CIG, La Plata, Argentina. ; Alvarez, MD (corresponding author), Consejo Nacl Invest Cient & Tecn, Inst Patagon Estudio Ecosistemas Continentales IP, Buenos Aires, DF, Argentina.
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
EISSN	1873-0647
出版年	2021
卷号	110
英文摘要	The South Atlantic coast in Argentine Patagonia is an area where semi-arid to arid conditions predominate and coastal populations present serious water supply problems. The aim of the work was to evaluate the factors that condition the salinization processes of coastal aquifers from a hydrochemical and isotopic analysis of the groundwater located in Pleistocene and Holocene littoral ridges in the northern sector of Patagonia in Bahia San Blas. A geomorphological characterization of the area was carried out using digital elevation models, satellite image interpretation and field surveys. Groundwater chemistry was analyzed in 40 shallow wells and 2 tidal water samples. At each point, electrical conductivity, temperature and pH of water were measured and samples were taken for analysis of major ions and stable isotopes. The salinization processes were analyzed by means of ionic and isotopic relationship graphs and were subsequently modeled using free software. The results obtained allowed the identification of the factors that determine the salinization of coastal aquifers. Particularly in the Pleistocene coastal ridges, the cementation of the most superficial sediments reduces permeability conditioning rainwater infiltration. This, together with the presence of soluble salts on the surface and the mixing with sea water, determines the salinization of the groundwater. In contrast to these, in the Holocene coastal ridges without cementation, rainwater infiltrates forming freshwater lenses where salinization processes occur only at the edges of the lenses where the saltwater wedge is located. The data provided in this paper are useful in prospecting freshwater sources along the arid coast of Patagonia where freshwater availability is scarce. They can also be extrapolated to other sectors worldwide with similar geological and climatic environments.
英文关键词	Freshwater lenses Coastal ridges Arid coastal environments Argentinean Patagonia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000684988000001
WOS关键词	FRESH-WATER LENSES ; SAMBOROMBON BAY ; SALINE GROUNDWATER ; SEAWATER INTRUSION ; CLIMATE-CHANGE ; HYDROGEOCHEMISTRY ; SUSTAINABILITY ; CONTAMINATION ; VULNERABILITY ; INDICATORS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368430
作者单位	[Carol, Eleonora Silvina; Tanjal, Carolina] UNLP, CONICET, Ctr Invest Geol CIG, La Plata, Argentina; [Carol, Eleonora Silvina; Tanjal, Carolina; Bouza, Pablo Jose] Univ Nacl La Plata, La Plata, Buenos Aires, Argentina; [Alvarez, Maria del Pilar] Consejo Nacl Invest Cient & Tecn, Inst Patagon Estudio Ecosistemas Continentales IP, Buenos Aires, DF, Argentina; [Alvarez, Maria del Pilar] Univ Nacl La Patagonia San Juan Bosco, Comodoro Rivadavia, Argentina; [Bouza, Pablo Jose] Consejo Nacl Invest Cient & Tecn, Inst Patagon Geol & Paleontol IPGP, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Carol, Eleonora Silvina,Alvarez, Maria del Pilar,Tanjal, Carolina,et al. Factors controlling groundwater salinization processes in coastal aquifers in semiarid environments of north Patagonia, Argentina[J],2021,110.
APA	Carol, Eleonora Silvina,Alvarez, Maria del Pilar,Tanjal, Carolina,&Bouza, Pablo Jose.(2021).Factors controlling groundwater salinization processes in coastal aquifers in semiarid environments of north Patagonia, Argentina.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,110.
MLA	Carol, Eleonora Silvina,et al."Factors controlling groundwater salinization processes in coastal aquifers in semiarid environments of north Patagonia, Argentina".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 110(2021).