Groundwater management options in an arid environment: The Nubian Sandstone Aquifer System, Eastern Sahara

Sefelnasr, Ahmed; Goßel, Wolfgang; Wycisk, Peter

doi:10.1016/j.jaridenv.2015.06.009

Cited by 31 publications

(12 citation statements)

References 23 publications

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“…Following the same structure as presented by Daily et al (2009) for the ecosystem services concept in its simplest form four separate aspects can be identified in the analyses of the contributions 2 Note exceptions like the Nubian Sandstone aquifer system extending over 2 mln km 2 in north eastern Africa as an example of a fossil water source (with groundwater ages ranging from several hundred thousand to 1 million years) in which groundwater is then basically mined (Sefelnasr et al, 2015). from geosystem services to human well-being and the decisionmaking process on them.…”

Section: Which Aspects Typify the Geosystem Services Concept?mentioning

confidence: 99%

Geosystem services: A concept in support of sustainable development of the subsurface

2016

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Section: Which Aspects Typify the Geosystem Services Concept?mentioning

confidence: 99%

Geosystem services: A concept in support of sustainable development of the subsurface

2016

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“…Groundwater is an important type of water resource to play a critical role in the regional development (Béjar-Pizarro et al, 2017;Gholami et al, 2015;Li et al, 2018), especially in areas with limited water resource including coastal regions, arid regions, and megacities (Sefelnasr et al, 2015;Vandenbohede et al, 2009;Zhu et al, 2015). Half of the global megacities are estimated to depend on the groundwater resources for development (Bricker et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Wen

Lü

et al. 2019

Science of The Total Environment

149

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Coastal groundwater quality significantly affects the regional sustainable development, due to the water resource shortage in coastal zone. Current studies on coastal groundwater have mainly focused on saline water intrusion and over-extraction. Information on the heavy metal pollution of coastal groundwater with salinization trend is limited. This study investigated heavy metals in groundwater from a typical coastal region with intensive anthropogenic activities and saline water intrusion. The southwestern coastal plains of the study area showed significant groundwater salinization trend. Heavy metals in the coastal groundwater mainly originated from anthropogenic activities and groundwater salinization according to principal component analysis. Relative high concentrations of As, Co, Cr, Cu, Fe, Mn, and Ni occurred in the southwestern coast of the study area with high TDS level, indicating that the concentrations of these heavy metals in shallow aquifer of the study area might be influenced by the groundwater salinization. Average concentrations of heavy metals in groundwater of the study area ranged from 0.03 (Cd) to 686.92 (Fe) μg/L. Fe was the dominant heavy metal in groundwater with the maximal concentration of 2333.76 μg/L and exceeding-standard rate reaching 98.23%. Approximately 13.27% of sampling sites showed moderate or higher heavy metal pollution of groundwater based on heavy metal pollution index. Heavy metals in groundwater exerted low ecological risks. Elements Fe, Ni, and As were the main contributors for ecological risks. Cancer risks of heavy metals for both adults and children were high at all sampling sites. Non-cancer risks for adults and children were unacceptable at 4.42% and 17.70% of sampling sites, respectively. The

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“…Da precipitação total sobre os continentes, apenas cerca de 35% dá origem a escoamento superficial e à recarga de aquíferos (costa, 2007). Há zonas, como em algumas regiões da América Latina, com elevadas pluviosidades e que dispõem de numerosas massas de água superficiais (rios e lagos), enquanto outras zonas, além de apresentarem precipitação muito escassa, são exclusivamente dependentes de um único sistema aquífero, como por exemplo é descrito por Sefelnasr et al (2015), para o Nordeste Africano. outro aspeto relevante é que a população mundial cada vez mais se concentra nas zonas costeiras.…”

Section: áGuas Subterrâneas E Intrusão Salinaunclassified

Risco de intrusão salina e desenvolvimento sustentável: gestão integrada de água subterrâneas

Carvalho¹,

Ponte²,

Veloso³

et al. 2016

TER

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Tal como outros aquíferos costeiros, o Sistema Aquífero da Mexilhoeira Grande - Portimão (Algarve), está sob a ameaça da intrusão salina. Analisou-se a evolução nos últimos 30 anos dos níveis piezométricos, do balanço hídrico, de alguns indicadores da qualidade da água e dos usos do solo. Conclui-se que a salinidade devida à intrusão salina e/ou à presença de diapiros está confinada a zonas restritas e que, desde que devidamente monitorizado, este aquífero pode contribuir para a implementação de novos projetos agrícolas importantes para a economia da região.

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Groundwater management options in an arid environment: The Nubian Sandstone Aquifer System, Eastern Sahara

Cited by 31 publications

References 23 publications

Geosystem services: A concept in support of sustainable development of the subsurface

Geosystem services: A concept in support of sustainable development of the subsurface

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Risco de intrusão salina e desenvolvimento sustentável: gestão integrada de água subterrâneas

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