scholarly journals identification of groundwater recharge and nitrate pollution in the Kanegawa alluvial fan of the Kofu Basin, Japan, using stable isotopes and ions

2012 ◽  
Vol 68 (4) ◽  
pp. I_199-I_204 ◽  
Author(s):  
YUREANA WIJAYANTI ◽  
TAKASHI NAKAMURA ◽  
KEI NISHIDA ◽  
EIJI HARAMOTO ◽  
YASUSHI SAKAMOTO
Keyword(s):  
Stable Isotopes ◽  
Groundwater Recharge ◽  
Nitrate Pollution ◽  
Alluvial Fan

scholarly journals Assessments of seasonal groundwater recharge and discharge using environmental stable isotopes at Lower Muda River Basin, Malaysia

2018 ◽  
Vol 8 (5) ◽  
Author(s):  
Mohd Khairul Nizar Shamsuddin ◽  
Wan Nor Azmin Sulaiman ◽  
Mohammad Firuz Ramli ◽  
Faradiella Mohd Kusin ◽  
Kamarudin Samuding
Keyword(s):  
Stable Isotopes ◽  
Groundwater Recharge ◽  
River Basin

scholarly journals Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1667 ◽  
Author(s):  
Nuan Yang ◽  
Guangcai Wang ◽  
Zheming Shi ◽  
Dan Zhao ◽  
Wanjun Jiang ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Qaidam Basin ◽  
Groundwater Resources ◽  
Atmospheric Precipitation ◽  
Northwest China ◽  
Major And Trace Elements ◽  
Alluvial Fan ◽  
Hydrogeochemical Processes ◽  
Recharge Sources ◽  
Gypsum Precipitation

Groundwater is a critical water resource for human survival and economic development in arid and semi-arid areas. It is crucial to understand the groundwater circulation and hydrochemical evolution for sustainable management and utilization of groundwater resources in those areas. To this end, an investigation of the hydrochemical characteristics of surface water and groundwater was conducted in Nomhon, an arid area located in the Qaidam Basin, northwest China, by using hydrochemical (major and trace elements) and stable isotopes (δD and δ18O) approaches. Stable isotopes and ion ratios were analyzed to determine the recharge sources, hydrochemistry characteristics, and major hydrogeochemical processes. Meanwhile, inverse geochemistry modeling was applied to quantitatively determine the mass transfer of hydrogeochemical processes. The results showed that groundwater in the study area is mainly recharged by atmospheric precipitation in mountainous areas, and the groundwater in the center of basin might originate from ancient water in cold and humid environments. Along the groundwater flow path, the TDS of groundwater increased gradually from fresh to salty (ranging from 462.50 to 19,604.40 mg/L), and the hydrochemical type changed from Cl·HCO3–Na·Mg·Ca to Cl–Na. Groundwater chemical composition and mass balance modeling results indicated that from alluvial fan to lacustrine plain, the main hydrogeochemical processes changed from the dissolution of halite and albite and the precipitation of dolomite and kaolinite to the dissolution of halite and gypsum, precipitation of calcite, redox (SO42− reduction), and cation exchange. This study would be helpful for water resources management in this area and other similar areas.

scholarly journals Application of a Self-Organizing Map of Isotopic and Chemical Data for the Identification of Groundwater Recharge Sources in Nasunogahara Alluvial Fan, Japan

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 278 ◽  
Author(s):  
Takeo Tsuchihara ◽  
Katsushi Shirahata ◽  
Satoshi Ishida ◽  
Shuhei Yoshimoto
Keyword(s):  
Groundwater Recharge ◽  
Groundwater Resources ◽  
Paddy Rice ◽  
Alluvial Fan ◽  
Rice Fields ◽  
Isotopic Ratios ◽  
Self Organizing Map ◽  
Recharge Sources ◽  
Different Origins ◽  
Self Organizing

Paddy rice fields on an alluvial fan not only use groundwater for irrigation but also play an important role as groundwater recharge sources. In this study, we investigated the spatial distribution of isotopic and hydrochemical compositions of groundwater in the Nasunogahara alluvial fan in Japan and applied a self-organizing map (SOM) to characterize the groundwater. The SOM assisted with the hydrochemical and isotopic interpretation of the groundwater in the fan, and clearly classified the groundwater into four groups reflecting the different origins. Two groundwater groups with lower isotopic ratios of water than the mean precipitation values in the fan were influenced by the infiltration of river water flowing from higher areas in the catchments and were differentiated from each other by their Na+ and Cl− concentrations. A groundwater group with higher isotopic ratios was influenced by the infiltration of paddy irrigation water that had experienced evaporative isotopic enrichment. Groundwater in the fourth group, which was distributed in the upstream area of the fan where dairy farms dominated, showed little influence of recharge waters from paddy rice fields. The findings of this study will contribute to proper management of the groundwater resources in the fan.

Nitrate pollution and its transfer in surface water and groundwater in irrigated areas: a case study of the Piedmont of South Taihang Mountains, China

2014 ◽  
Vol 16 (12) ◽  
pp. 2764-2773 ◽  
Author(s):  
Jing Li ◽  
Fadong Li ◽  
Qiang Liu ◽  
Yoshimi Suzuki
Keyword(s):  
Spatial Distribution ◽  
Surface Water ◽  
Yellow River ◽  
Critical Factor ◽  
Nitrate Pollution ◽  
Alluvial Fan ◽  
The Yellow River ◽  
Surface Water And Groundwater ◽  
Irrigation Practice

The yellow river irrigation practice was a critical factor impacting the spatial distribution of nitrate in surface water and groundwater in a yellow river alluvial fan.

Using stable isotopes to quantify ecohydrological flux dynamics at the soil-plant-atmosphere continuum in urban green spaces

2020 ◽  
Author(s):  
Lena-Marie Kuhlemann ◽  
Doerthe Tetzlaff ◽  
Birgit Kleinschmit ◽  
Stenka Vulova ◽  
Chris Soulsby
Keyword(s):  
Stable Isotopes ◽  
Soil Moisture ◽  
Groundwater Recharge ◽  
Green Spaces ◽  
Convective Precipitation ◽  
Urban Water ◽  
Water Fluxes ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Water Partitioning

<p>Urban areas, more than many experimental catchments, are characterized by a markedly heterogeneous distribution of land covers, with different degrees of permeability that radically vary partitioning of precipitation into evapotranspiration (“green” water fluxes) and runoff and groundwater recharge (“blue” water fluxes). While the quantification of ecohydrological fluxes using stable isotopes in water as environmental tracers has been an established method for many years, surprisingly few studies have been applied to the highly complex urban water cycle. To determine the effects of representative urban green space “types” on water partitioning, we carried out plot-scale studies at a heterogenous field site in Berlin-Steglitz that integrates climate, soil moisture and sap flow data, with isotope sampling of precipitation and soil moisture on a regular basis. Soil moisture and isotope measurements were conducted at different depths and under contrasting soil-vegetation units (grassland, trees, shrub) with different degrees of permeability. Our investigations revealed uniformly decreasing soil moisture content during the dry summer of 2019, with only temporary re-wetting of the uppermost soil layers despite heavy convective precipitation events. Soils under trees were driest, whilst grassland soils were wettest, with shrubs intermediate. Isotope-based modelling indicated that this was the result, of greater interception, transpiration and – surprisingly – soil evaporation from forest sites. The isotope signatures of soil water also revealed stronger “memory effects” of summer drying in forest soils, which persisted until the major re-wetting of the system in autumn allowed drainage from the soil profile to contribute to groundwater recharge. Modelling showed that recharge under grasslands could be over 3 times higher compared to under trees and shrubs. Upscaling these findings with large-scale isotope studies of surface and groundwater across Berlin highlights the importance of the vegetation in urban green spaces to water partitioning in heterogeneous city landscapes and the need for careful integration of vegetation management in urban water and land use planning.</p>

scholarly journals Identifying Groundwater Recharge Sites through Environmental Stable Isotopes in an Alluvial Aquifer

Water ◽  
2017 ◽  
Vol 9 (8) ◽  
pp. 569 ◽  
Author(s):  
Julián González-Trinidad ◽  
Anuard Pacheco-Guerrero ◽  
Hugo Júnez-Ferreira ◽  
Carlos Bautista-Capetillo ◽  
Arturo Hernández-Antonio
Keyword(s):  
Stable Isotopes ◽  
Groundwater Recharge ◽  
Alluvial Aquifer
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