نتایج جستجو برای: aquitard

تعداد نتایج: 149  

Journal: :Water Resources Research 2021

Regional-scale groundwater quality degradation from nonpoint source pollution threatens the long-term sustainability of major alluvial aquifer-aquitard systems worldwide. Models are needed to simulate regionally upscaled transport processes in heterogeneous geology that produces non-Fickian (anomalous) transport. In this investigation, we show impact nonhorizontal and nonvertical mean flow dire...

Journal: :Journal of contaminant hydrology 2004
D Hunkeler N Chollet X Pittet R Aravena J A Cherry B L Parker

Chlorinated ethenes often migrate over extended distances in aquifers and may originate from different sources. The aim of this study was to determine whether stable carbon isotope ratios remain constant during dissolution and transport of chlorinated ethenes and whether the ratios can be used to link plumes to their sources. Detailed depth-discrete delineation of the carbon isotope ratio in a ...

Journal: :Water 2023

The characteristics of peat’s are crucial for understanding natural processes and their suitable shaping through the management water relations. This study focused on results one first hydraulic conductivity (k) laboratory tests exemplary peat samples from Biebrza Valley (a peatland very high environmental importance) in relation to stress state gradient. Further, research was devoted a specifi...

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