Combining spectral analysis and geochemical tracers to investigate surface water–groundwater interactions: A case study in an intensive agricultural setting (southern Guatemala)

The Science of The Total Environment, Год журнала: 2023, Номер 899, С. 165578 - 165578

Опубликована: Июль 20, 2023

An increase in the frequency of severe hydrological events has highlighted importance sustainable water management intensive agricultural regions. In a warming climate, improved understanding and stewardship resources are needed to guarantee supply, ensure food security, build resilience against extreme events. this study, we evaluate framework that combines spectral analysis geochemical tracers as potential tool for (1) gaining valuable insights into surface (SW)-groundwater (GW) interactions, (2) providing guidance an basin southern Guatemala. The proves be useful revealing important dynamics, exposing key feedback mechanisms availability quality. With use power density functions hydrochemistry (T, pH, EC, major ions), two specific interaction regimes (influent effluent) were identified delimited main watercourse. These segments estimated interact at high rates with shallow aquifer river channel proximities would lose influence towards flanks. Furthermore, δ2H δ18O values indicate regional groundwater flow systems play essential role recharge. Lastly, established three zones depict spatial extent SW-GW interactions within basin. these zones, provide recommendations will allow further investigation application better strategies regulating development land activities context area.

Язык: Английский

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Multicomponent Assessment of the Impact of Hydropower Cascade on Fish Metrics

Опубликована: Янв. 1, 2023

The water sector is one of the prioritised areas European Union therefore legislation encourages development methods to protect river ecosystem. key this characterization river's physical features with respect ecological quality. Rivers are a complex system where geomorphic conditions, hydrological regime, and indicators interact each other. group hydropower plants (HPPs) that forms cascade distorts natural continuity components. Analysis spatial temporal alterations in environment important for understanding potential impact on indicators. In current study, multicomponent assessment was used evaluate combined five HPPs fish metrics as case study Varduva River physico-chemical conditions same along river. research involved field surveys collecting measurements highly affected ungauged estimate hydrologic under operation, usage Unmanned Aerial Vehicles digital photogrammetry mapping units, sampling estimation composition species guilds, habitat availability modelling based collected data conditional suitability criteria, using MesoHABSIM approach. Results revealed technical characteristics determined their individual operation mode which had crucial and, together distance between dams, variation across cascade. intensive created adverse effects intolerant but advantageous tolerant species. proposed HPP multimetric correlated showed similar tendencies integrity index (IH) obtained modelling.

Язык: Английский

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A Study on the Response of Surface Water and Groundwater Interaction to River Runoff in the Taoer River Alluvial Fan

E3S Web of Conferences, Год журнала: 2024, Номер 520, С. 01024 - 01024

Опубликована: Янв. 1, 2024

Understanding the transformation mechanisms of surface water and groundwater positively impacts rational utilization resources more scientific allocation their uses. Many factors affect interaction (SGWI), among which river runoff is most critical variable. Studying response mechanism SGWI under changes in channel volume can help understand essence SGWI. Using Taoer River alluvial fan as research area, daily data from hydrological stations study area January to March 1961, 1971, 1981, 1991, 2001, 2011 were collected. The was calculated using balance flow speed difference methods. results show that main factor controlling SGWI, quantity (IQ) stable when IQ relatively small.

Язык: Английский

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Integrated modeling of surface water and groundwater interactions in the Eastern Mitidja Plain, North Algeria: investigating the impact of human activities and climate change

Journal of Water and Climate Change, Год журнала: 2024, Номер 15(11), С. 5570 - 5586

Опубликована: Окт. 25, 2024

ABSTRACT The interaction between surface water and groundwater is a crucial factor in understanding resources' dynamics promoting sustainable development, particularly regions affected by human activities climate change. This work aims to investigate dynamic interactions El Hamiz river Eastern Mitidja alluvial aquifer (North Algeria) using regional three-dimensional numerical model (MODFLOW 6). A typical scenario analysis approach was conducted historical projected data from CMIP5 CMIP6 models, as well current abstraction rates. findings demonstrate major shifts the flow over time. In 1982, replenished at rate of 2.59 m3/s. However, 2019 new state observed which recharged 0.73 decrease can be linked over-pumping decreased recharge rates, are expected continue future. Future forecasts show that misuse affects more than Algerian government's saltwater desalination upgraded irrigation methods could provide substantial contribution growth resources, with potential increase up 14 meters.

Язык: Английский

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Spectral and molecular insights into the variations of dissolved organic matter in shallow groundwater impacted by surface water recharge

Water Research, Год журнала: 2024, Номер 273, С. 122978 - 122978

Опубликована: Дек. 20, 2024

Язык: Английский

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