1st Edition

# Environmental Hydraulics, Two Volume Set Proceedings of the 6th International Symposium on Enviornmental Hydraulics, Athens, Greece, 23-25 June 2010

**Also available as eBook on:**

Over the last two decades environmental hydraulics as an academic discipline has expanded considerably, caused by growing concerns over water environmental issues associated with pollution and water balance problems on regional and global scale. These issues require a thorough understanding of processes related to environmental flows and transport phenomena, and the development of new approaches for practical solutions. *Environmental Hydraulics* includes about 200 contributions from 35 countries presented at the 6^{th} International Symposium on Environmental Hydraulics (Athens, Greece, 23-25 June 2010). They cover the state-of-the-art on a broad range of topics, including:

- fundamentals aspects of environmental fluid mechanics
- environmental hydraulics problems of inland, coastal and ground waters
- interfacial processes; computational, experimental and field measurement techniques
- ecological aspects, and
- effects of global climate change.

*Environmental Hydraulics* will be of interest to researchers, civil/environmental engineers, and professional engineers dealing with the design and operation of environmental hydraulic works such as wastewater treatment and disposal, river and marine constructions, and to academics and graduate students in related fields.

**VOLUME 1**

**Invited keynote lectures**

Environmental Hydraulics and Sustainability: Some lessons from recent past

H.J.S. Fernando

Severn Barrage and other tidal energy options: Environmental hydraulics studies

R.A. Falconer, J. Xia & B. Lin

A post-operation audit of the Tai Hang Tung Storage Scheme

J.H.W. Lee, K.T.M.Wong, K.W. Choi & F. Arega

Retrospective evaluation of an implemented computer-optimized groundwater-remediation design

G.F. Pinder & J.F. Guarnaccia

Integrating hydraulic, hydrology and environmental economy models for the protection and sustainable use of transboundary water resources

J. Ganoulis & Ch. Skoulikaris

**Fundamentals of environmental fluid mechanics**

Theoretical, field and experimental study on internal wave dynamics in rotating stratified basins

H. Ulloa, C. Rozas, A. de la Fuente &Y. Niño

The effects of topography on mixing rates in controlled exchange flows

G.O. Hughes, T. Prastowo, R.W. Griffiths & A.McC. Hogg

Influence of interaction between submerged longitudinal vegetation zone on generation of large scale organized horizontal vortices

T. Tanaka & T. Ohmoto

Mean flow structure and advection of instantaneous coherent-flow pattern around T-type and L-type groynes

A. Kadota & K. Suzuki

Vertical transport in high Reynolds number stratified turbulent wakes

P.J. Diamessis

Density and velocity fields of internal waves generated by oscillating bodies in a stratified environment

B.M. Marino & L.P. Thomas

Shallow turbulent flow over regularly arrayed sphere roughness in an open channel

T. Ohmoto & T. Sukarno

Momentum and mass exchanges in natural flows – Approaches to quantify non-uniformity at two spatial scales

C. Noß, I. Storchenegger, T. Salzmann & A. Dittrich

Dynamic interaction of buoyant plumes

A.C.H. Lai & J.H.W. Lee

Second-order integral model for plane turbulent buoyant jets in stratified environments

P.C. Yannopoulos & M.G. Markou

Spreading of buoyant jets and fountains in a calm, linearly density-stratified fluid

P.N. Papanicolaou & G. Stamoulis

Transitional behaviour of buoyant jets moving along three-dimensional paths

E. Scheepbouwer, M.J. Davidson & R.I. Nokes

Mixing and dispersion by a pulsating jet in cross flow

R. Vernet, L. Thomas, D. Calluaud & L. David

Super-critical and sub-critical starting jets in shallow waters

S. Karimpour Ghannadi, L.-W. Tan & V.H. Chu

Flying-hot-film anemometry measurements of the effect of back-ground turbulence on a turbulent jet

B. Khorsandi, S. Gaskin & L. Mydlarski

Particle-flow interaction in a horizontal sediment-laden jet

P. Liu & K.M. Lam

PIV measurements of turbulence in an inertial particle plume in an unstratified ambient

D.B. Bryant & S.A. Socolofsky

Simplified estimates of trajectory of inclined negatively buoyant jets

G.C. Christodoulou & I.G. Papakonstantis

Boundary interactions of horizontal brine discharges

D. Shao & A.W.K. Law

Buoyancy considerations for integrated discharges

M.J. Wood, C.T. Mead & B.R. Wild

Modelling the front condition of rigid boundary gravity currents

R.I. Nokes, J.D. McBryde, M.J. Davidson & M.J. Allis

Gravity-driven flows running over porous media with different lower boundary conditions

B.M. Marino & L.P. Thomas

Effect of reservoir bed slope and density current discharge on water entrainment

S.M. Kashefipour, F. Kooti & M. Ghomeshi

Entrainment by katabatic winds

J. Bühler, M. Princevac & A.J. Schleiss

**Environmental hydraulics of inland waters**

Simultaneous measurements of velocity and plant motion in open-channel flows with flexible vegetations

I. Nezu &T. Okamoto

Resistance and turbulence structure in open-channel flows with flexible vegetations

T. Okamoto & I. Nezu

Laboratory measurement and analysis of hydraulic parameters in vegetated river flows

J.Z. Shi, Y.-H. Li, J.M.R. Hughes & M. Zhao

Effect of blockage factor on vegetated channel resistance

D. Souliotis & P. Prinos

Flow characteristics in vegetated compound channels

X. Sun, K. Shiono & T.L. Huang

Turbulence structure of compound open-channel flows with one-line emergent vegetation

M. Sanjou, I. Nezu, S. Suzuki & K. Itai

Effects of depth variation of vegetation density on vertical mixing

S. Ghazvinizadeh & M. Jamali

Bioengineering in front of a river dike: Wave attenuation by vegetation

R. de Oude, D.C.M. Augustijn, K.M. Wijnberg, F. Dekker, M.B. de Vries & T. Suzuki

Long term prediction of vegetation expansion on gravel bed river with active bar migration

Y. Toda, T. Tsujimoto & M. Tsuchiya

Parameters used in modeling sediment-laden flow in open channels

P. Wu & Y.C. Jin

An integrated mathematical model for analysis of hydrodynamics and water quality in rivers

A.I. Stamou & E.M. Douka

Two-dimensional finite element model for analysis of heat transport in rivers

I.W. Seo, H.J. Choi & C.G. Song

Predicting travel time in natural streams, using a Monte Carlo simulation

S. Solís, I. Guymer & R. Dutton

A modeling approach for organic sediment resuspension and oxygen demand in Bubbly Creek, Chicago, Illinois

D. Motta, M.H. Garcia & J.D. Abad

Effective countermeasures to long-term turbid water effluence from the Hitotsuse Dam Reservoir

T. Murakami, H. Nakayama, S. Mizuguchi, S. Sugio & N. Ootawara

Impact of river training on the hydraulics of Shenzhen River

S.N. Chan & J.H.W. Lee

Numerical modeling of river bed evolution in abrupt hydraulic changes

E.D. Farsirotou, J.V. Soulis & P.G. Lokkas

Influence of saline intrusion during the dry season in Red river and Thai Binh river systems, Vietnam

N.H. Duc, T. Shintani & M. Umeyama

Standing waves in the Quequén Grande River Estuary, Argentina, detected from velocity measurements

L.P. Thomas, B.M. Marino & M.G. Pereyra

Modeling the tidal bore on the Qiantang River, China: An application of FVCOM

D.F. Xie, C.H. Pan & X.G. Wu

Analysis of flow regime changes due to operation of large reservoirs on the Zambezi River

J.P. Matos, T. Cohen, J.-L. Boillat, A.J. Schleiss & M.M. Portela

On the experiences of flood control schemes application in the Golestan province (Iran)

A. Ghezelsofloo, A. Deiminiat, H. Shojaee & R. Lotfi

Hydrologic and hydraulic computations for watercourse demarcation in Greece

E.I. Daniil, S.N. Michas & G.S. Aerakis

A numerical study on characteristics of flood propagation in simplified urban areas

W.C. Jeong, Y.S. Cho & J.W. Lee

Process oriented modeling of Lake Ontario hydrodynamics

L. Boegman & Y.R. Rao

3-D simulations of flows in the reconstituted lake Karla, Thessaly, Greece

H. Neveskiotis, K. Tserdani, I.E. Sarris, T.E. Karakasidis & A. Liakopoulos

Sensitivity of MITgcm to different model parameters in application to Cayuga Lake

A. Dorostkar, L. Boegman, P.J. Diamessis &A. Pollard

Modeling the fate of oxygen artificially injected in the hypolimnion of a lake with multiple basins: Amisk Lake revisited

F. Rueda, V. Singleton, M. Stewart, J. Little & G. Lawrence

Generation mechanism of typical vertical distributions of dissolved oxygen in the northern part of Lake Biwa

T. Hosoda & F. Malembeka

River inflow mixing in a stratified reservoir

F. Rueda, A. Cortés, I. de Vicente, M.A. Escobar, A.B. Hoyer, W. Fleenor & E. Moreno

1-D Hydrodynamic modeling of Greek lakes and reservoirs

S. Karalis & A. Chioni

Surface water inflow to wetlands in Blanco River sub basin

E.A. Sánchez Camacho

Hydrological characteristics of swamp communities, the Biebrza River (NE Poland) case study

T. Okruszko, J. Chormanski, D. Mirosław- Świątek & M. Gregorczyk

Application of a mathematical model for nutrient pollution assessment in a small catchment of the Latrobe River Basin, Australia

Md. Jahangir Alam & D. Dutta

**Environmental hydraulics of coastal waters**

Numerical modeling of non-hydrostatic free-surface baroclinic flows induced by suspended particles

O. Nesterov

Large-wave simulation of three-dimensional wave breaking over constant-slope beach

A.S. Dimakopoulos &A.A. Dimas

Bed equilibrium during water wave propagation over ripples

G.A. Kolokythas & A.A. Dimas

Near-bottom instabilities under fully nonlinear waves of depression

T. Stefanakis & P.J. Diamessis

SPH numerical simulation of surf zone characteristics

C. Makris, Y. Krestenitis & C. Memos

Velocity profiles of sea currents

F. De Serio & M. Mossa

Oscillatory flow velocities through vegetation fields: Laboratory observations

M. Di Natale, M. Ciarmiello &A. Di Nardo

Large scale experiments on spectral wave propagation over Posidonia oceanica seagrass

E. Manca, V. Stratigaki & P. Prinos

Attractors for the entrance state of a tidal estuary

B.C. Wilson, J.B. Hinwood & E.J. McLean

Response of an estuary to transient river flow variation

J.B. Hinwood & E.J. McLean

Generation mechanism of wind-induced Langmuir circulation

M. Sanjou, I. Nezu & Y. Akiya

Modeling the North Aegean circulation with the Hybrid Coordinate Ocean Model

Y. Androulidakis, Y. Krestenitis & V. Kourafalou

Numerical modelling of hydrodynamics in the Southampton Water

Y. Guo & J. Zhang

3D coupled modeling of hydrodynamics and water quality in the Berre Lagoon (France)

L. Martin, E. Gouze, E. Razafindrakoto, J.M. Hervouet, N. Durand & C.T. Pham

A 2D water quality model for shallow estuaries. Sensitivity analysis to model parameters and input data

L. Cea, M. Bermúdez & J. Puertas

Numerical simulation of the oxygen-depleted water formation near the head of the Ariake Bay, Japan in the summer of 2004 and 2005

M. Odagiri & M. Tanaka

Water quality monitoring and modeling in Lagoon Jusan, Japan

M. Umeda, H. Tanaka, H. Higuchi & M. Sasaki

Effect of large-scale flooding on water quality of Tokyo bay

Y. Nihei & K. Takioka

Modeling the impact of watershed processes on coastal erosion

A.G. Samaras & C.G. Koutitas

The importance of watershed sediment modeling to coastal morphology. A case study

C.G. Koutitas & A.G. Samaras

Dynamics of particle clouds with application to open water sediment disposal

R.J. Gensheimer, R.-Q. Wang, E.E. Adams, C. Dai, D. Shao, B. Zhao, Z. Huang & A.W.K. Law

Numerical investigation of fresh water-suspended sediment mixtures discharging into saline ambient water

A. Georgoulas, P. Angelidis, N. Kotsovinos & T. Panagiotidis

Study of a thermal brine discharge using a 3D model

J. García, C. Álvarez, A. García, J. Revilla & J. Juanes

A SPH model for numerical simulation of oil spill in marine environment

M. Shafieefar & A. Valizadeh

Oil Spill Modelling as a tool for coastal pollution control

N. Donia

Environmental hydraulics framework of the design of discharges from desalination plants

T. Bleninger, A. Niepelt, G.H. Jirka†, S. Lattemann, A. Purnama, H.H. Al-Barwani & R.L. Doneker

Methodology for the implementation of the WFD combined approach: Environmental Mixing Zones for outfall discharges into coastal waters

A. Freire, J. Juanes, J. Revilla, X. Guinda, A. García, C. Álvarez & K. Nikolov

Parameter sensitivity analysis of the performance of Galician Submarine Outfalls: Physical modeling

I. Mera, J. Anta, A. Louro & E. Peña

Improvement in preconditioning treatment system of Santos Submarine Outfall

E.L. Subtil, J.C. Mierzwa & J.P. Ortiz

Coastal beach salinity prediction using data-driven and deterministic approaches

W. Thoe, H.C. Wong & J.H.W. Lee

Laboratory measurements of hydrodynamics and sediment transport in the swash-zone

G.A. Kikkert, T. O’Donoghue & D. Pokrajac

Berm breakwater against wave overtopping – An experimental study

E.N. Anastasaki, V.K. Tsoukala & C.I. Moutzouris

Breakwaters’ impact on Egypt’s north coast equilibrium

G.H. Elsaeed

Environmental impact assessment of dredging deep in the navigation channel of the Port of Santos

J.C.C. Amorim, K. Bundgaard & B. Elfrink

**VOLUME 2**

**Environmental hydraulics of groundwater**

Estimation of seawater intrusion front in a coastal karstified system using a density-dependent flow approach

M.P. Papadopoulou, Z. Dokou, G.P. Karatzas, & C.I. Zahariadi

Seawater intrusion in coastal aquifers under drought and transient conditions

G. Kopsiaftis & A. Mantoglou

Stochastic simulation of seawater intrusion considering random rainfall events

V.C. Christelis & A. Mantoglou

Design criteria for cut-off walls as countermeasure to saltwater intrusion

A.I. Ziogas &V.K. Kaleris

A stochastic framework for the analysis of tidal effects in heterogeneous coastal aquifers

M.G. Trefry, D. McLaughlin, D.R. Lester, G. Metcalfe, C.D. Johnston &A. Ord

Combined simulation-optimization of a coastal aquifer by using genetic algorithm

K. Demirbas, A.B. Altan Sakarya & H. Onder

A computational model for the optimal management of coastal aquifers

S.K. Arvanitidou, C.G. Koutitas, K.L. Katsifarakis & G.H. Pechlivanidis

Response of LNAPL fuel and groundwater to forcing by sea level and rainfall recharge

C.D. Johnston & M.G. Trefry

Characteristics of flow in fractures: An experimental study

V.G. Tzelepis, J.N.E. Papaspyros, K. Moutsopoulos &V. Tsihrintzis

Optimal management of a polluted fractured aquifer, using genetic algorithms

Y.N. Kontos, M.I. Katirtzidou, M.A. Kizeridou & K.L. Katsifarakis

Quantification of artificial neural network uncertainty with bootstrap percentile intervals for the prediction of a karstic aquifer’s response

I.C. Trichakis, G.P. Karatzas & I.K. Nikolos

Theoretical analysis and numerical simulations for unsteady stormwater storage into granular sub-base

B. Ghimire & T. Hosoda

Modelling of groundwater flow and contaminant removal in horizontal subsurface flow constructed wetlands

K. Liolios, K. Moutsopoulos, V. Tsihrintzis & C. Akratos

**Interfacial processes**

Effect of the slope of short fetch wind-driven waves on the oxygen transfer in a water body

A. Tamburrino & L. Rayo

Energy transfer properties among mean, wave and turbulence components in open-channel flows with wind-induced water waves

M. Sanjou & I. Nezu

Evaluation of a sea surface roughness model and drag coefficient

I. Papadimitrakis & B. Carlsson

Numerical modeling of dissolved oxygen recovery during aeration in lakes

N. Jaćimović, M. Ivetić, T. Hosoda & H.-D. Park

Bubble-water mass transfer from plunging jet spillways

J.S. Gulliver & J. Groeneveld

How biofilms influence seabed morphology

M. van Damme, R.R. Simons, M.J.F. Stive & B.C. van Prooijen

Turbulence and chronic detachment of epilithic biofilm in artificial rough channel flow

M. Graba, F.Y. Moulin, O. Eiff, F. Garabétian, A. Kettab, S. Boulêtreau, J.M. Sanchez-Pérez & S. Sauvage

Experimental and numerical analysis of sediment nutrient uptake in a channel flow

M. González-Sanchis, F.A. Comín, J. Murillo & P. García-Navarro

Modelling of phosphorus adsorption in estuarine sediment

E. Al-Enezi, Y. Al-Osairi, B.N. Bockelmann-Evans & R.A. Falconer

Quantifying hyporheic exchange coefficients using the EROSIMESS-system

I.D. Chandler, J.M. Pearson, I. Guymer & R. Van-Egmond

Modelling the impulses causing entrainment of coarse grains by means of Extreme Value Theory

M. Valyrakis, P. Diplas & C.L. Dancey

Wavelet based analysis of energetic events leading to entrainment of coarse grains

M. Valyrakis, P. Diplas & C.L. Dancey

Sediment flux dynamics in turbulent unsteady open-channel flow over a gravel bed

F. Bagherimiyab & U. Lemmin

Experimental observations and simulation of non-equilibrium bedload transport of graded bed material

N.P. Efthymiou, F. Eberl & P. Rutschmann

Effect of particle size on local scour of cohesive sediments

M.H. Omid & H. Hamidifar

An experimental study on the process of dune transition under unsteady water flow

Y. Hirai, S. Kawamura, Y. Shimizu & I. Kimura

Local scour and development of sand wave around a permeable groyne of stone gabion

A. Kadota, K. Suzuki & T. Fushimi

Bed topography of river bend due to horizontal footing

M. Shafai Bejestan & A. Rezania

Hydraulic jump with sediment laden flow in a rectangular channel

M.H. Omid & M. Nasrabadi

**Field measurements and experimental techniques**

The effect of Reynolds number on junction flow dynamics

N. Apsilidis, P. Diplas, C.L. Dancey & F. Sotiropoulos

A combined system of an H-ADCP and numerical simulation for continuous discharge monitoring

H. Iwamoto &Y. Nihei

Development of automatic water discharge measurement system

A. Yorozuya, Y. Kanno, K. Fukami & K. Oodaira

Boat and bed load motion effects on velocity profiles measured with an acoustic Doppler current profiler

J. Petrie, P. Diplas, S. Nam & M.S. Gutierrez

Deriving continuous hydrodynamic data from non-synoptic measurements in the St. Lawrence fluvial estuary

P. Matte, Y. Secretan & J. Morin

Correction of quick discharge measurements in rivers using natural tracers

P.C. Yannopoulos & E.S. Bekri

Systems development for Mixing Zone field studies

R.L. Doneker

Calibration of a propagation model in large river using satellite altimetry

G. Belaud, L. Cassan, J.C. Bader, N. Bercher &T. Feret

On the use of Digital Surface Models and hydrological/hydraulic models for inundated area delineation

I. Leventi, I. Nalbantis &A. Georgopoulos

Monitoring temperature changes in a hypersaline lake using MODIS-derived water temperatures (the case of Urmia Lake, Iran)

S. Sima & M. Tajrishy

Monitoring lake hydraulics in West Macedonia using remote sensing techniques and hydrodynamic simulation 8

E. Charou, E. Katsimpra, M. Stefouli & A. Chioni

Annual sediment budget in the Shirakawa River estuary, Japan

K. Yokoyama, T. Suetsugi & S. Kawano

Regression relationships between sediment yield and hydraulic and rainfall characteristics for two basins in northeastern Greece

A. Metallinos & V. Hrissanthou

Flow pattern and sediment transport in the Kikuchi River mouth

T. Ohmoto, R. Hirakawa & K. Watanabe

A study on flow distribution for maintaining two-way channel in an alluvial plain

T. Nagata, H. Yasuda & Y. Watanabe

Field measurements of stream reaeration and longitudinal dispersion

J. Semuwemba, T. Elliot & P.A. Mackinnon

Control of the water current and prevention of phytoplankton growth by using a vertical fence installed in a water supply reservoir

M. Niiyama, K. Yokoyama, A. Koizumi, K. Yamazaki, M. Tsuge, A. Masuko &Y. Kobayashi

Comparison of ARIMA and transfer function (TF) models in water temperature simulation in dam – lake Thesaurus, eastern Macedonia, Greece

A. Sentas & Ar. Psilovikos

Solute migration and transport in coastal sand-beach sediments under strong tides

O.D. Itugha, D. Chen & A.A. Ahmed

**Computational techniques**

High resolution 3D numerical modeling of turbulent flows in natural streams

S. Kang & F. Sotiropoulos

Large eddy simulation of a flow in a real river with boulder bed

R. Shibata, N. Hisasue & A. Nakayama

Calculation of secondary flow in a straight open channel with RANS and LES

H. Bihs, N.R.B. Olsen & T. Stoesser

3D RANS computations of open channel flows with a sharp bend

I. Kimura, S. Takimoto, K. Blanckaert, Y. Shimizu & T. Hosoda

Analysis of SIMPLE algorithm for depth averaged simulations

M. Moradi Larmaei & T.-F. Mahd

A k– model accounting for multiple length scales in flow through aquatic vegetation

A.T. King

Simulation of morphodynamics by particles techniques

M. Nabi

Three-dimensional turbulent flow over bed dunes in open channel of finite width

K.A. Galani, N.Th. Fourniotis, A.C. Demetracopoulos & A. A. Dimas

Improvements and application of 1D river network transient flow model with Junction Water Stage Iteration Method

Z.Y. Wang, Y. Chen, D.J. Zhu & Z. Liu

Wet-and-dry interface on steep slopes simulations using Lagrangian blocks

L.-W. Tan & V.H. Chu

Dam-break flood simulations using 2D Lagrangian blocks on Eulerian mesh method

L.-W. Tan & V.H. Chu

A simple, efficient and accurate approach to solving the shallow-water equations over complex bed topography

D.J. Zhu & Y. Chen

Examination of the effect of dispersion terms in the depth-averaged transport equation

Z. Liu, Z. Li & Y. Chen

Spatial water quality modelling using unstructured cellular automata for spiked pollution loading in Hong Kong

Y. Lin &A.E. Mynett

Near field mixing process of multi-port diffusers: Numerical modeling with quadtree grids

N.Q. Chien & S.K. Tan

**Urban hydrosystems**

Hydraulic implications of non-standard solutions in spatially constrained wastewater facilities

N. Ravlic & N. Krvavica

Hydraulic efficiency of baffled disinfection contact tanks

Q. Xu & S.K. Venayagamoorthy

Phosphorous release from gross pollutant traps in urban environments

J.E. Ball & J. Ara

A water quality model for aeration of leachate from garbage dumped landfill

K. Michioku, T. Nakamichi, M. Yagi & N.Wada

Physical model investigation of circular deaeration channel associated with tangential inlet dropstructure

T. Nakato

Sediment removal efficiency of a deep vortex chamber sediment extractor

Q.-T. Nguyen & C.-D. Jan

Optimization of a detention pond based on numerical flow and transport simulations

M. Omar, A. Jourieh, R. Hinkelmann, D. Balla, M. Barjenbruch & J. Steidl

Evaluating the performance level of a water distribution network under unbalanced operating conditions – The case of Kos town (GR)

V. Kanakoudis & S. Tsitsifli

**Ecological aspects**

Flow structure and resulting sediment patterns around fish habitat structures in mountainous streams

A.N. Papanicolaou, A.G. Tsakiris & C.M. Kramer

Developing sustainable environments for aquatic life: The effects of boulders on regulating sediment deposition in gravel-bed rivers

D.C. Dermisis & A.N. Papanicolaou

Application of genetic algorithm to improve the fuzzy logic river habitat model

R. Li, Q. Chen, D. Chen & D. Chen

Experimental and numerical evaluation of sixteen different designs of vertical slot fishways

M. Bermúdez, J. Puertas, L. Cea, L. Pena & L. Balairón

Proper-orthogonal basis decomposition of spatio-temporal flow evolutions modified by cylinder in a vertical slot fishway

D. Calluaud, R.W. Wang, G. Pineau & L. David

Do ecological flows benefit exotic species?

I. Boavida, A.N. Pinheiro & R. Cortes

A model of flushing-flows in open-channel for fixed algae removal

O. Fovet, G. Belaud, X. Litrico, S. Charpentier, P. Dollet, C. Bertrand & C. Hugodot

Analysis of the environmental flow requirement incorporating the effective discharge concept

D. Zarris

Optimization model of reservoir operation under ecological flow constraint: The case of cascade dams onYalongjiang River, China

D. Chen, Q. Chen, R. Li & D. Chen

Types of artificial water bodies in the Aegean islands (Greece), their environmental impact and potential value for biodiversity

N.M. Georgiadis, K. Paragamian, T. Giannakakis, D. Poursanidis & G. Catsadorakis

**Environmental hydraulics and global climate change**

Climate change impacts on the hydrodynamic characteristics of the southern part of Aswan High Dam reservoir, Lake Nubia

M. Elshemy & G. Meon

Influence of the urban heat island parameterization on precipitation forecasting in limited area model

A. Cantelli, P. Monti & G. Leuzzi

Downscaling output of global climate models with application to aquifer thermal regimes in the Sendai plain, Japan

L.N. Gunawardhana & S. Kazama

Potential climate change impacts on South African aquifers

S.R. Dennis & I. Dennis

Mean sea-level rise impacts on coasts and sea harbours of São Paulo State, Brazil

E. Arasaki,W.C. Sousa Junior & P. Alfredini

Drag coefficient and secondary motion of free falling cylindrical particles

A.C. Chow & E.E. Adams

Modeling the impact of CO2 releases under water

P.D. Yapa, A.L. Dissanayake, K. Nakata & Y. Ishihara

Analysis of the risk distribution of slope failure in Thailand by the use of GIS data

K. Ono, S. Kawagoe & S. Kazama

### Biography

Christodoulou, George C. ; Stamou, Anastasios I.