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Issue 3

Global NEST Journal cover

Global NEST Journal

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Issue on Water Resources, Hydrology and Hydraulics


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Regression analysis between sediment transport rates and stream discharge for the Nestos River, Greece


Angelis I., Metallinos A. and Hrissanthou V.


Systematic measurements of sediment transport rates and water discharge were conducted in the Nestos River (Greece), at a place located between the outlet of Nestos River basin and the river delta. This basin area is about 838 km2 and lies downstream of the Platanovrysi Dam. Separate measurements of...

Sediment transport Bed load +5 more

Decision support for agricultural water management


Panagopoulos Y., Makropoulos C. and Mimikou M.


Irrigation water use is the major pressure limiting the availability of fresh water resources in the Mediterranean. Efficient irrigation scheduling programs (IRSPs) are able to reduce water consumption; however, their selection and placement in large agricultural landscapes depend on location...

Irrigation practices Decision support +5 more

Assessing Alternative Water Resources Management Scenarios in Islands of the Aegean Archipelago, Greece


Karavitis C.A., Skondras N.A., Manoli E. and Assimacopoulos D.


This effort discusses and evaluates alternative water management options to alleviate water stress and meet water needs in insular entities of the Aegean Archipelago, within the framework set by the principles of Integrated Water Resources Management (IWRM) and of the Water Framework Directive 2000...

Water resources management scenarios Decision Support Systems +3 more

Modeling renewal times in Amvrakikos Gulf, Greece


Stamou A.I., Loverdou L., Matsoukis C., Albanis T. and Gkesouli A.


The Amvrakikos Gulf, located in the northwest Greece, is one of the largest semi-enclosed embayments being about 40 km long and 15 km wide. Water renewal is made via a narrow channel which connects the Gulf with the Ionian Sea having a 3.0 km length, width ranging from 0.8 to 2.0 km and depth from 2...

water quality models hydrodynamic models +3 more

Measuring the turbulent characteristics in an open channel using the PIV method


Pechlivanidis G.I., Keramaris E., Pechlivanidis I.G. and Samaras G.A.


Investigation of open channel flows is very important for a wide range of applications, including restoration and enhancement of river aquatic systems. As a result, the scientific community has focused on providing further insights on the flow characteristics in vegetated channels. Vegetation may be...

Open channel flow Particle Image Velocimetry +5 more

Modeling the effect of vegetation on river floodplain hydraulics


Stamou A.I., Papadonikolaki G., Gkesouli A. and Nikoletopoulos A.


Vegetation in river floodplains has significant influence on the flood hydraulics and fate of suspended sediments, nutrients and contaminants. In the present, work preliminary 3-D calculations were performed to examine the effect of vegetation on the mean flow in open channels using the CFD model...

Vegetation eco-hydraulics +4 more

Sensitivity analysis of different evapotranspiration methods using a new sensitivity coefficient


Ambas V.Th. and Baltas E.


The estimation of evapotranspiration is essential in water resources management. Among a group of methods, the Penman–Monteith has been commonly applied to calculate reference evapotranspiration as this method has been also recommended by the Food and Agriculture Organization of the U.N. (FAO)...

sensitivity coefficient reference evapotranspiration +2 more

An environmental approach for the management and protextion of heavily irrigated regions


Stathatou P.G., Tsoukala V.K., Papadopoulou M.P., Stamou A., Spiliotopoulou N., Theochari C.and Papa... View all


In this paper the results of a preliminary study that investigates water footprint (WF) concept, as a useful tool to address water management problems in cultivated areas are presented. The two basic methodologies reported in the literature, their applicability, benefits and challenges were...

Water Footprint environmental water resources management +4 more

Using an informational entropy-based metric as a diagnostic of flow duration to drive model parameter identification


Pechlivanidis I.G., Jackson B.M., McMillan H.K. and Gupta H.V.


Calibration of rainfall-runoff models is made complicated by uncertainties in data, and by the arbitrary emphasis placed on various magnitudes of the model residuals by most traditional measures of fit. Current research highlights the importance of driving model identification by assimilating...

calibration Model identification +5 more

Systematic approach for ungaged basins’ discharge determination in Western Peloponnese, Greece


Daniil Ε.Ι., Michas S.N., Nikolaou K. and Lazaridis L.S.


Determining peak flows for ungaged areas is difficult and involves high uncertainty. Advanced computer capabilities provided by geographical information systems and hydrologic modeling software are used for detailed determination of the parameters involved, both for simple methods as the rational...

hydrologic modeling ungaged basins +3 more

The impact of forest fires on the vulnerability of peri-urban catchments to flood events: The case of the Easter Attica Region, Greece


Papathanasiou C., Alonistioti D., Kasella A., Makropoulos C. and Mimikou M.


Floods are natural disasters that pose a direct threat to human life and often cause significant economic loss. River floods are caused by heavy and/or prolonged rainfall, causing rivers and streams to overflow and sometimes also burst dams or levees. Forest fires increase the risk factor to which...

forest fires floods +4 more

Estimating flood inundation and the consequent economic losses in the Koiliaris river basin in Crete, Greece


Vozinaki A.-E.K., Kourgialas N.N. and Karatzas G.P.


Local communities may experience flood events with devastating damages and economic losses. This work presents the application of an integrated method for flood loss estimation at the watershed level. The one-dimensional hydraulic model MIKE 11 was used to simulate the physical process of a flood...

Flood loss estimation flood inundation +1 more