Advances in the Research of Aquatic Environment

Lambrakis, N.; Stournaras, G.; Κατσάνου, K.

doi:10.1007/978-3-642-19902-8

Cited by 24 publications

(8 citation statements)

References 26 publications

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“…The direct river water abstraction was estimated to be 5 Mm 3 / year. The annual average irrigation water use for Evrotas basin up to Vrontamas station was estimated, from both stream water abstraction (withdrawals) and irrigation, to be 77 Mm 3 (Tzoraki et al 2011, Gamvroudis et al 2012.…”

Section: Site Descriptionmentioning

confidence: 99%

Assessing the flow alteration of temporary streams under current conditions and changing climate by Soil and Water Assessment Tool model

Tzoraki

Girolamo

Gamvroudis

et al. 2015

International Journal of River Basin Management

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A new approach, the 'Naturalness Status' (NS), is suggested to classify the hydrologic alteration of temporary rivers from natural conditions based on the Hydrological Status Tool (HS-Tool). The HS-Tool considers two metrics: the degree and the predictability of dry flow conditions for both natural flow and its alterations, at each water body in actual and natural conditions. The Soil and Water Assessment Tool (SWAT) model is simulating the river flow of Evrotas water bodies, Greece, under natural, actual and climate-impacted conditions. The majority of Evrotas water bodies (72%) experience good (low-impacted) NS for the examined period (1990 -2010), despite their intermittent flow regime. Severe flow alteration is predicted for 57% of Evrotas water bodies (high-impacted NS), while selecting the KNMI-RACMO2 future climate projections scenario (2020-2060) as input into the SWAT model. Hydrologic extreme drought phenomena or anthropogenic pressures in water regime can be quantified by the NS. The method is intended to be used in basin decision-making analysis at fulfilling the Water Framework Directive goals.

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Section: Site Descriptionmentioning

confidence: 99%

Assessing the flow alteration of temporary streams under current conditions and changing climate by Soil and Water Assessment Tool model

Tzoraki

Girolamo

Gamvroudis

et al. 2015

International Journal of River Basin Management

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“…Fetter [2001] suggested that active SWI type (a) occurs in unconfined aquifers, and type (b) arises in confined aquifers. Studies adopting Fetter's [1973] classification of SWI include Ozler [2002], Nikolaou et al [2011], Carneiro et al [2010], Werner et al [2012], Werner et al [2013], and Krishna and Murthy [2014].…”

Section: Introductionmentioning

confidence: 99%

On the classification of seawater intrusion

Werner

2017

Journal of Hydrology

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Seawater intrusion (SWI) arising from aquifer depletion is often classified as "active" or "passive", depending on whether seawater moves in the same direction as groundwater flow or not. However, recent studies have demonstrated that alternative forms of active SWI show distinctly different characteristics, to the degree that the term "active SWI" may be misleading without additional qualification. In response, this article proposes to modify hydrogeology lexicon by defining and characterizing three classes of SWI, namely passive SWI, passive-active SWI and active SWI. The threshold parameter combinations for the onset of each form of SWI are developed using sharp-interface, steady-state analytical solutions. Numerical simulation is then applied to a hypothetical case study to test the developed theory and to provide additional insights into dispersive SWI behavior. The results indicate that the three classes of SWI are readily predictable, with the exception of active SWI occurring in the presence of distributed recharge. The key characteristics of each SWI class are described to distinguish their most defining features. For example, active SWI occurring in aquifers receiving distributed recharge only creates watertable salinization downstream of the groundwater mound and only where dispersion effects are significant. The revised classification of SWI proposed in this article, along with the analysis of thresholds and SWI characteristics, provides coastal aquifer custodians with an improved basis upon which to expect salinization mechanisms to impact freshwater availability following aquifer depletion.

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“…The monitoring and primary data collection of groundwaters also needs to be improved (Cieniawski et al 1995); in particular the accuracy and international comparability through the designation of national groundwater monitoring points (Panagopoulos et al 2011) and the adaptation and mitigation strategies in response to climate change deserve further research efforts (Sukhija 2008). Overall, groundwater management needs to move toward more flexible risk-based approaches able to take into account the non-stationary dynamics and statistics of the hydro-climatic system (Garfin et al 2008).…”

Section: Research Into Groundwatermentioning

confidence: 99%

Climate Change and European Water Bodies, a Review of Existing Gaps and Future Research Needs: Findings of the ClimateWater Project

Garnier

Harper

Blaškovičová

et al. 2015

Environmental Management

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There is general agreement among scientists that global temperatures are rising and will continue to increase in the future. It is also agreed that human activities are the most important causes of these climatic variations, and that water resources are already suffering and will continue to be greatly impaired as a consequence of these changes. In particular, it is probable that areas with limited water resources will expand and that an increase of global water demand will occur, estimated to be around 35-60% by 2025 as a consequence of population growth and the competing needs of water uses. This will cause a growing imbalance between water demand (including the needs of nature) and supply. This urgency demands that climate change impacts on water be evaluated in different sectors using a cross-cutting approach (Contestabile in Nat Clim Chang 3:11-12, 2013). These issues were examined by the EU FP7-funded Co-ordination and support action "ClimateWater" (bridging the gap between adaptation strategies of climate change impacts and European water policies). The project studied adaptation strategies to minimize the water-related consequences of climate change and assessed how these strategies should be taken into consideration by European policies. This article emphasizes that knowledge gaps still exist about the direct effects of climate change on water bodies and their indirect impacts on production areas that employ large amounts of water (e.g., agriculture). Some sectors, such as ecohydrology and alternative sewage treatment technologies, could represent a powerful tool to mitigate climate change impacts. Research needs in these still novel fields are summarized.

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Advances in the Research of Aquatic Environment

Cited by 24 publications

References 26 publications

Assessing the flow alteration of temporary streams under current conditions and changing climate by Soil and Water Assessment Tool model

Assessing the flow alteration of temporary streams under current conditions and changing climate by Soil and Water Assessment Tool model

On the classification of seawater intrusion

Climate Change and European Water Bodies, a Review of Existing Gaps and Future Research Needs: Findings of the ClimateWater Project

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