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Author Priyanka*, B.N.; Mohan Kumar, M.S.
Title Direct and inverse modeling of seawater intrusion: A Perspective Type Journal Article
Year 2017 Publication J. Geol. Soc. India Abbreviated Journal
Volume 90 Issue Pages (up) 595-601
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Call Number CUT @ phaedon.kyriakidis @ Priyanka2017 Serial 152
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Author Pacheco, F.A.L.; Szocs, T.
Title “Dedolomitization reactions” driven by anthropogenic activity on loessy sediments, SW Hungary Type Journal Article
Year 2006 Publication Applied Geochemistry Abbreviated Journal
Volume 21 Issue 4 Pages (up) 614-631
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Abstract In the Szigetvár area, SW Hungary, shallow groundwaters draining upper Pleistocene loess and Holocene sediments are considerably contaminated by domestic effluents and leachates of farmland fertilizers. The loess contains calcite and dolomite, but gypsum was not recognized in these sediments. The anthropogenic inputs contain significant amounts of Ca and SO4. The Ca from these anthropogenic inputs is promoting calcite growth, with concomitant consumption of carbonate alkalinity, undersaturation of the system with respect to dolomite, and dolomite dissolution; in brief, is driving “dedolomitization reactions”. Geochemical arguments supporting the occurrence of “dedolomitization reactions” in the area are provided by the results of mass balance and thermodynamic analyses. The mass balances predicted the weather sequence dolomite\textgreatercalcite\textgreaterplagioclase\textgreaterK-feldspar, at odds with widely accepted sequences of weatherability where calcite is the first mineral in the weathering sequence. The exchange between calcite and dolomite can be a side effect of “dedolomitization reactions” because they cause precipitation of calcite. The thermodynamic prerequisites for “dedolomitization reactions” are satisfied by most local groundwaters (70%) since they are supersaturated (or in equilibrium) with respect to calcite, undersaturated (or in equilibrium) with respect to dolomite, and undersaturated with respect to gypsum. The Ca vs. SO4 and Mg vs. SO4 trends are also compatible with homologous trends resulting from “dedolomitization reactions”.
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ISSN 0883-2927 ISBN Medium
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Call Number THL @ christoph.kuells @ Pacheco2006 Serial 35
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Author Giménez-Forcada, E.
Title Space/time development of seawater intrusion: A study case in Vinaroz coastal plain (Eastern Spain) using HFE-Diagram, and spatial distribution of hydrochemical facies Type Journal Article
Year 2014 Publication Journal of Hydrology Abbreviated Journal
Volume 517 Issue Pages (up) 617-627
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Abstract A new method has been developed to recognize and understand the temporal and spatial evolution of seawater intrusion in a coastal alluvial aquifer. The study takes into account that seawater intrusion is a dynamic process, and that seasonal and inter-annual variations in the balance of the aquifer cause changes in groundwater chemistry. Analysis of the main processes, by means of the Hydrochemical Facies Evolution Diagram (HFE-Diagram), provides essential knowledge about the main hydrochemical processes. Subsequently, analysis of the spatial distribution of hydrochemical facies using heatmaps helps to identify the general state of the aquifer with respect to seawater intrusion during different sampling periods. This methodology has been applied to the pilot area of the Vinaroz Plain, on the Mediterranean coast of Spain. The results appear to be very successful for differentiating variations through time in the salinization processes caused by seawater intrusion into the aquifer, distinguishing the phase of seawater intrusion from the phase of recovery, and their respective evolutions. The method shows that hydrochemical variations can be read in terms of the pattern of seawater intrusion, groundwater quality status, aquifer behaviour and hydrodynamic conditions. This leads to a better general understanding of the aquifers and a potential for improvement in the way they are managed.
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ISSN 0022-1694 ISBN Medium
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Call Number THL @ christoph.kuells @ Gimenez-Forcada2014 Serial 23
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Author Guerzoni, S.; Molinaroli, E.; Chester, R.
Title Saharan dust inputs to the W. Mediterranean Sea: depositional patterns, geochemistry and sedimentological implications Type Journal Article
Year 1997 Publication Deep-Sea Res Abbreviated Journal
Volume 44 Issue 3-4 Pages (up) 631-654
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Call Number THL @ luqianxue.zhang @ Guerzoni1997 Serial 61
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Author Dhar, A.; Patil, R.S.
Title Fuzzy uncertainty based design of groundwater quality monitoring networks Type Journal Article
Year 2011 Publication J. Environ. Res. Develop. Abbreviated Journal
Volume 5 Issue 3a Pages (up) 683-688
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Call Number CUT @ phaedon.kyriakidis @ Dhar2011 Serial 140
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