scholarly journals Recharge sources and flow system of groundwaters in Osaka Basin, estimated from environmental isotopes and water chemistry

2009 ◽  
Vol 51 (1) ◽  
pp. 15-41 ◽  
Author(s):  
Shinji NAKAYA ◽  
Muneki MITAMURA ◽  
Harue MASUDA ◽  
Kenji UESUGI ◽  
Yusuke MOTODATE ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Flow System ◽  
Environmental Isotopes ◽  
Recharge Sources ◽  
Osaka Basin

scholarly journals The influence of water–rock interactions on household well water in an area of high prevalence chronic kidney disease of unknown aetiology (CKDu)

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Liza K. McDonough ◽  
Karina T. Meredith ◽  
Chandima Nikagolla ◽  
Richard B. Banati
Keyword(s):  
Water Quality ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Water Chemistry ◽  
Mass Balance ◽  
Stable Carbon Isotopes ◽  
Environmental Isotopes ◽  
Well Water ◽  
High Prevalence ◽  
Geochemical Mass Balance

AbstractPoor drinking water quality in household wells is hypothesised as being a potential contributor to the high prevalence of chronic kidney disease of uncertain aetiology (CKDu) among the farming communities of the Medawachchiya area, Anuradhapura, Sri Lanka. One of the natural processes that can affect water quality is the dissolution of minerals contained within an aquifer by water–rock interactions (WRIs). Here we present a comprehensive assessment of WRIs and their influence on the water chemistry in household wells and spring waters in the Medawachchiya area by combining measurements of environmental isotopes, such as strontium, lithium and stable carbon isotopes and inorganic chemistry parameters, and modelling geochemical mass balance reactions between rainfall and groundwater samples. Our results reveal the presence of strontium, dissolved from both silicate and carbonate minerals, with high isotopic (87Sr/86Sr) ratios of up to 0.7316. Geochemical mass balance modelling and prior 87Sr/86Sr studies on the Wanni Complex bedrock suggest these strontium values may be the result of biotite dissolution. We also identify lithium and uranium contributed from the dissolution of silicates, albeit at concentrations too low to constitute a known health risk. In contrast, the levels of magnesium and calcium in our samples are high and demonstrate that, despite the felsic bedrock, well water chemistry in the Medawachchiya area is dominated by carbonate dissolution.

scholarly journals Characterization of Recharge Mechanisms and Sources of Groundwater Salinization in Ras Jbel Coastal Aquifer (Northeast Tunisia) Using Hydrogeochemical Tools, Environmental Isotopes, GIS, and Statistics

2017 ◽  
Vol 2017 ◽  
pp. 1-20 ◽  
Author(s):  
Jamila Hammami Abidi ◽  
Boutheina Farhat ◽  
Abdallah Ben Mammou ◽  
Naceur Oueslati
Keyword(s):  
Coastal Aquifer ◽  
Isotope Composition ◽  
Exchange Process ◽  
Environmental Isotopes ◽  
Return Flow ◽  
Groundwater Salinization ◽  
Rock Interaction ◽  
Ion Exchange Process ◽  
Recharge Sources ◽  
Groundwater Samples

Groundwater is among the most available water resources in Tunisia; it is a vital natural resource in arid and semiarid regions. Located in north-eastern Tunisia, the Metline-Ras Jbel-Raf Raf aquifer is a mio-plio-quaternary shallow coastal aquifer, where groundwater is the most important source of water supply. The major ion hydrochemistry and environmental isotope composition (δ18O, δ2H) were investigated to identify the recharge sources and processes that affect the groundwater salinization. The combination of hydrogeochemical, isotopic, statistical, and GIS approaches demonstrates that the salinity and the groundwater composition are largely controlled by the water-rock interaction particularly the dissolution of evaporate minerals and the ion exchange process, the return flow of the irrigation water, agricultural fertilizers, and finally saltwater intrusion which started before 1980 and which is partially mitigated by the artificial recharge since 1993. As for the stable isotope signatures, results showed that groundwater samples lay on and around the local meteoric water line LMWL; hence, this arrangement signifies that the recharge of the Ras Jbel aquifer is ensured by recent recharge from Mediterranean air masses.

Determination of the components of stormflow using water chemistry and environmental isotopes, Mattole River basin, California

1986 ◽  
Vol 84 (1-2) ◽  
pp. 107-140 ◽  
Author(s):  
V.C. Kennedy ◽  
Carol Kendall ◽  
G.W. Zellweger ◽  
T.A. Wyerman ◽  
R.J. Avanzino
Keyword(s):  
Water Chemistry ◽  
River Basin ◽  
Environmental Isotopes

scholarly journals Natural and Anthropogenic Geochemical Tracers to Investigate Residence Times and Groundwater–Surface-Water Interactions in an Urban Alluvial Aquifer

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 871
Author(s):  
Connor P. Newman ◽  
Suzanne S. Paschke ◽  
Gabrielle Keith
Keyword(s):  
Rare Earth ◽  
Surface Water ◽  
Rare Earth Element ◽  
Earth Element ◽  
Flow System ◽  
Alluvial Aquifer ◽  
Residence Times ◽  
Geochemical Tracers ◽  
Recharge Sources ◽  
Wastewater Indicator

A multi-component geochemical dataset was collected from groundwater and surface-water bodies associated with the urban Fountain Creek alluvial aquifer, Colorado, USA, to facilitate analysis of recharge sources, geochemical interactions, and groundwater-residence times. Results indicate that groundwater can be separated into three distinct geochemical zones based on location within the flow system and proximity to surface water, and these zones can be used to infer sources of recharge and groundwater movement through the aquifer. Rare-earth-element concentrations and detections of wastewater-indicator compounds indicate the presence of effluent from wastewater-treatment plants in both groundwater and surface water. Effluent presence in groundwater indicates that streams in the area lose to groundwater in some seasons and are a source of focused groundwater recharge. Distributions of pharmaceuticals and wastewater-indicator compounds also inform an understanding of groundwater–surface-water interactions. Noble-gas isotopes corroborate rare-earth-element data in indicating geochemical evolution within the aquifer from recharge area to discharge area and qualitatively indicate variable groundwater-residence times and mixing with pre-modern groundwater. Quantitative groundwater-residence times calculated from 3H/3He, SF6, and lumped-parameter modeling generally are less than 20 years, but the presence of mixing with older groundwater of an unknown age is also indicated at selected locations. Future investigations would benefit by including groundwater-age tracers suited to quantification of mixing for both young (years to decades) and old (centuries and millennia) groundwater. This multi-faceted analysis facilitated development of a conceptual model for the investigated groundwater-flow system and illustrates the application of an encompassing suite of analytes in exploring hydrologic and geochemical interactions in complex systems.

scholarly journals Acid Mine Drainage Sources and Impact on Groundwater at the Osarizawa Mine, Japan

Minerals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 998
Author(s):  
Naoto Nishimoto ◽  
Yosuke Yamamoto ◽  
Saburo Yamagata ◽  
Toshifumi Igarashi ◽  
Shingo Tomiyama
Keyword(s):  
Acid Mine Drainage ◽  
River Water ◽  
Mine Drainage ◽  
Flow System ◽  
Chemical Properties ◽  
Environmental Isotopes ◽  
Mountain Slope ◽  
Recharge Area ◽  
Acid Mine ◽  
Akita Prefecture

Understanding the origin of acid mine drainage (AMD) in a closed mine and groundwater flow system around the mine aids in developing strategies for environmental protection and management. AMD has been continuously collected and neutralized at Osarizawa Mine, Akita Prefecture, Japan, since the mine was closed in the 1970s, to protect surrounding river water and groundwater quality. Thus, water samples were taken at the mine and surrounding groundwaters and rivers to characterize the chemical properties and environmental isotopes (δ2H and δ18O). The results showed that the quality and stable isotope ratios of AMD differed from those of groundwater/river water, indicating that the recharge areas of AMD. The recharge area of AMD was evaluated as the mountain slope at an elevation of 400–500 m while that of the surrounding groundwater was evaluated at an elevation of 350–450 m, by considering the stable isotopes ratios. This indicates that the groundwater affected by AMD is limited to the vicinity of the mine and distributed around nearby rivers.

scholarly journals Using Water Chemistry, Isotopes and Microbiology to Evaluate Groundwater Sources, Flow Paths and Geochemical Reactions in the Death Valley Flow System, USA

2013 ◽  
Vol 7 ◽  
pp. 842-845 ◽  
Author(s):  
James M. Thomas ◽  
Duane P. Moser ◽  
Jenny C. Fisher ◽  
Jessica Reihle ◽  
Alexandra Wheatley ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Flow System ◽  
Death Valley ◽  
Flow Paths ◽  
Geochemical Reactions
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