Hydro-geochemical and isotopic composition of ground water in Helwan area

Salem, W. M.; El-Sayed, Mostafa A.

doi:10.1016/j.ejpe.2015.10.004

Cited by 12 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some scenarios that may lead to the condition: groundwater δ 18 O > amount‐weighted annual precipitation δ 18 O. These include (a) high‐temperature alteration of the parent groundwater δ 18 O values (Giggenbach, ; Giggenbach & Soto, ); (b) higher summer recharge/precipitation ratios than winter recharge/precipitation ratios; (c) partial evaporation of meteoric water prior to, or during, infiltration (e.g., Cartwright et al, ; Huang & Pang, ; Njitchoua & Ngounou Ngatcha, ; Salem & El‐Sayed, ); (d) replenishment of coastal or (sub)tropical aquifers during older, different climate conditions than present (e.g., Clark et al, ; Plummer, ; Stute & Talma, ); and/or (e) transport of meteoric water over long distances before it recharges the aquifer either naturally (e.g., losing reach of a river; Darling et al, ; Baskaran et al, ) or through diversion to meet human water demands (e.g., Criss & Davisson, ; Plummer et al, ).…”

Section: Isotope Hydrogeologymentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

218

124

View full text Add to dashboard Cite

Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify molecular movements and chemical reactions governing groundwater recharge, quality, storage, flow, and discharge. Here, commonly applied approaches to isotopic data analysis are reviewed, involving groundwater recharge seasonality, recharge elevations, groundwater ages, paleoclimate conditions, and groundwater discharge. Reviewed works confirm and quantify long held tenets: (i) that recharge derives disproportionately from wet season and winter precipitation; (ii) that modern groundwaters comprise little global groundwater; (iii) that “fossil” (>12,000‐year‐old) groundwaters dominate global aquifer storage; (iv) that fossil groundwaters capture late‐Pleistocene climate conditions; (v) that surface‐borne contaminants are more common in younger groundwaters; and (vi) that groundwater discharges generate substantial streamflow. Groundwater isotope data are disproportionately common to midlatitudes and sedimentary basins equipped for irrigated agriculture, but less plentiful across high latitudes, hyperarid deserts, and equatorial rainforests. Some of these underexplored aquifer systems may be suitable targets for future field testing.

show abstract

Section: Isotope Hydrogeologymentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

218

124

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the ratios between (Mg 2+ +Ca 2+ ) and (Na + +K + ) in Table 4 for all samples are >1, suggesting the continued replenishment of groundwater [20]. Furthermore, Table 4 also demonstrates that the ratio of Na + /K + in most studied samples was less than 10, indicating that precipitation was the source of groundwater recharge [20]. The high relative average concentrations of Cl -/∑anions in Table 4 might suggest that groundwater was continually replenished by freshwater from rainfall [20,21].…”

Section: Groundwater Characteristics Based On Cations and Anionsmentioning

confidence: 89%

“…One of the factors contributing to the rise in these two ions' concentration in groundwater is possibly due to the use of fertilizers [19]. Nevertheless, the ratios between (Mg 2+ +Ca 2+ ) and (Na + +K + ) in Table 4 for all samples are >1, suggesting the continued replenishment of groundwater [20]. Furthermore, Table 4 also demonstrates that the ratio of Na + /K + in most studied samples was less than 10, indicating that precipitation was the source of groundwater recharge [20].…”

Section: Groundwater Characteristics Based On Cations and Anionsmentioning

confidence: 91%

Groundwater nitrogen concentration changes in an urbanized area of Indonesia over ten years period

Rusydi,

Setiawan,

Maria

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Nitrogen in groundwater poses environmental concerns in Bandung Region, Indonesia, due to natural and anthropogenic factors. The predominant component of the region’s aquifer is high-hydraulic-conductivity volcanic rock, one of the natural vital factors that make the aquifer vulnerable to contamination. Another factor is urbanization which has been reported to be an adverse effect of high nitrogen levels in the groundwater, particularly the unconfined system. This study’s objective was to evaluate urbanization’s impact on dissolved inorganic nitrogen concentrations over a 10-year period, which had not been explained by previous research. The evaluation focused on land-use changes in the southern part of the Bandung Region and their relation to dissolved inorganic nitrogen (DIN) in unconfined groundwater. A total of 88 samples were collected in 2009, 2015, and 2018 from three types of land-use: residential, plantations, and paddy fields. From 2009 to 2018, land use changes were visible, with an 8% and 6% increase in urban settlements and rice fields, respectively, and a 15% reduction in plantations. Furthermore, over a decade, agricultural and rice fields substantially impacted the NO3 − levels, contributing approximately 13.2 mg/L and 9.9 mg/L, respectively. In the meantime, the settlement area significantly contributed to the 3.25 mg/L increase in the NH4 + levels.

show abstract

“…Total dissolved solids (TDS) is calculated by the following equations: The results showed that the values of TDS varied from 665 to 1152 mg/L with an average 863 mg/L ( Table 2). This large variation of TDS values in surface water samples is classified in the high saline water zone and the water samples contain different amounts of major ions [14] ( Table 4). The large variation of TDS values can be attributed to the variation in the hydrological processes and geological formations in the study area.…”

Section: Total Dissolved Solids (Tds)mentioning

confidence: 99%

Suitability and Assessment of Surface Water for Irrigation Purpose

Tiri¹,

Belkhiri²,

Asma³

et al. 2020

Water Chemistry

View full text Add to dashboard Cite

Surface water is an important resource that can create tensions between different countries sharing the same water sources to know that the agriculture is considered as the last sector that exploits less water compared to the industry which uses very large water quantities. The future strategies of agricultural development in the most of these countries depend on the ability to maintain, improve and expand irrigated agriculture. In this light, this chapter is written in the way to show some steps of the evaluation of surface water for irrigation purpose. The results obtained from this research make it possible to evaluate the suitability of surface water for irrigation and to draw useful recommendations for dam managers and farmers.

show abstract

Hydro-geochemical and isotopic composition of ground water in Helwan area

Cited by 12 publications

References 26 publications

Global Isotope Hydrogeology―Review

Global Isotope Hydrogeology―Review

Groundwater nitrogen concentration changes in an urbanized area of Indonesia over ten years period

Suitability and Assessment of Surface Water for Irrigation Purpose

Contact Info

Product

Resources

About