Open Access. Powered by Scholars. Published by Universities.®

Water Resource Management Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3001 - 3030 of 8193

Full-Text Articles in Water Resource Management

Stochastic And Deterministic Parameter Estimation Of Coupled Bacteria-Sediment Fate And Transport In Streams, Tri Le, Arash Massoudieh Aug 2014

Stochastic And Deterministic Parameter Estimation Of Coupled Bacteria-Sediment Fate And Transport In Streams, Tri Le, Arash Massoudieh

International Conference on Hydroinformatics

E. Coli is widely used as an indicator organism to assess the risk of pathogenic bacteria in water bodies. Due to their strong association with suspended and bed sediments, the fate and transport of micro-organisms in water bodies is strongly controlled by sediment dynamics. It has been shown that bed sediments can contain orders of magnitude larger pathogen concentration than the water column and these sediment-associated bacteria can be released into the water column as a result of high flow velocities that cause sediment resuspension. In this presentation parameter estimation of a mechanistic model of bacteria-sediment interaction using a deterministic …

Go to article

Adaptive, Decentralized, And Real-Time Sampling Strategies For Resource Constrained Hydraulic And Hydrologic Sensor Networks, Brandon Preclaro Wong, Branko Kerkez Aug 2014

Adaptive, Decentralized, And Real-Time Sampling Strategies For Resource Constrained Hydraulic And Hydrologic Sensor Networks, Brandon Preclaro Wong, Branko Kerkez

International Conference on Hydroinformatics

We discuss the development and performance of a low-power sensor node (hardware, software and algorithms) that autonomously controls the sampling interval of a suite of sensors based on local state estimates and future predictions of water flow. The problem is motivated by the need to accurately reconstruct abrupt state changes in urban watersheds and stormwater systems. Presently, the detection of these events is limited by the temporal resolution of sensor data. It is often infeasible, however, to increase measurement frequency due to energy and sampling constraints. This is particularly true for real-time water quality measurements, where sampling frequency is limited …

Go to article

Flood Resilience Assessment In Urban Drainage Systems Through Multi-Objective Optimisation, Carlos Martínez-Cano, Beheshtah Toloh, Arlex Sanchez-Torres, Zoran Vojinović, Damir Brdjanovic Aug 2014

Flood Resilience Assessment In Urban Drainage Systems Through Multi-Objective Optimisation, Carlos Martínez-Cano, Beheshtah Toloh, Arlex Sanchez-Torres, Zoran Vojinović, Damir Brdjanovic

International Conference on Hydroinformatics

In future years, economic development, urbanisation and heavy rainfall events are expected to increase in urban areas, in particular in developing countries. It is well known that urban development has a strong impact on the water cycle such as increase of flood peaks and volume, decrease of base flow, hydraulic stress and water pollution. Resilience measures are still needed to improve urban flood risk, the possibilities to provide indicators that could be used to characterize urban resilience related to flooding is outmost importance. The work described here presents an optimisation framework for urban drainage rehabilitation that incorporates in the decision …

Go to article

An Open Visualization Tool (Openvt) For Mesh Based Water Models, Quan Pan, Mario E. Castro Gama, Ioana Popescu Aug 2014

An Open Visualization Tool (Openvt) For Mesh Based Water Models, Quan Pan, Mario E. Castro Gama, Ioana Popescu

International Conference on Hydroinformatics

Worldwide there has been a lot of developments of numerical models for water related problems, using mesh based approaches. The models are usually released with their own data formats and visualization tools. Computer power has developed greatly in the last 10-15 years resulting in capabilities of better representing physical processes, hence the size of output results becomes larger and larger. Taking this into account present paper presents the development of an open visualization tool (openVT) for mesh based water models, which has functions for loading and visualizing results from a suite of modeling systems, regardless of their data structures. The …

Go to article

Prediction And Dissemination Of Bathing Water Quality In England And Wales – A Pilot Study, Juzer F. Dhondia, Deborah Tyrrell, Daniel Twigt, Ian Dunhill Aug 2014

Prediction And Dissemination Of Bathing Water Quality In England And Wales – A Pilot Study, Juzer F. Dhondia, Deborah Tyrrell, Daniel Twigt, Ian Dunhill

International Conference on Hydroinformatics

Water quality at some bathing waters can be adversely affected by heavy rainfall resulting in water running off the land, picking up faecal contaminants from the catchment and discharging this to bathing waters. The Environment Agency of England and Wales analyzed the relationship between water quality and rainfall at each bathing site. This relationship between rainfall and water quality depends on the intensity and duration of the rainfall and considering each bathing sites individual characteristics such as tidal flows, wind, run-off from surrounding catchment. This paper describes a Pilot study for setting up an operational bathing water quality prediction system …

Go to article

Hydroterre Strahler Network Service For Any Level 12 Huc Catchment In The Usa., Lorne Leonard, Chris Duffy Aug 2014

Hydroterre Strahler Network Service For Any Level 12 Huc Catchment In The Usa., Lorne Leonard, Chris Duffy

International Conference on Hydroinformatics

My talk will discuss two related topics to HydroTerre (http://www.hydroterre.psu.edu), a prototype infrastructure that provides researchers, educators, and resource managers with seamless access to geospatial/geotemporal data for supporting physics-based numerical models. The first topic describes the prototype, defining the supporting Essential Terrestrial Variables (ETV’s) and the infrastructure to support models and data anywhere in the continental USA (CONUS). I will address how we are overcoming important problems of accessibility to high-resolution geospatial data sets from multiple sources, scalability of geospatial data in support of distributed models and data-intensive computation for multi-scale, multi-state simulations. The second topic will describe a derived …

Go to article

Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid, Dal-Sik Woo, Sung-Hoon Shin, Haksoo Lee, Seounghyun Kim Aug 2014

Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid, Dal-Sik Woo, Sung-Hoon Shin, Haksoo Lee, Seounghyun Kim

International Conference on Hydroinformatics

Usage of water is on rise worldwide as a result of population growth and urbanization. Accordingly, conflicts are created to secure the water source among nations. Water production and treatment expense also incurred too much. To solve this problem, decision making system for blending of multiple water source, water production and treatment process are needed in order to provide secured water resources, customized water quantity and quality. Multiple water sources are classified into surface water, underground water, treated waste water, rain water, seawater and Brackish Water. Each of them can be treated to meet demand of customized water quantity and …

Go to article

A Dss For Reservoirs Operation Based On The Execution Of Formal Models, Antonio Linares, Jesus Regodon, Laura Panizo, Maria Del Mar Gallardo, Pedro Merino Aug 2014

A Dss For Reservoirs Operation Based On The Execution Of Formal Models, Antonio Linares, Jesus Regodon, Laura Panizo, Maria Del Mar Gallardo, Pedro Merino

International Conference on Hydroinformatics

Controlling the evolution of a reservoir in a flood episode can be critical, especially in Mediterranean basins where the concentration time is very short. In this situation, an automatic software tool can help the reservoir manager to make a quick decision. In this paper we present a DSS based on the execution of formal models by means of model checking. This technique exhaustively explores the different execution branches of a model of the system. The DSS addresses two flood control tasks. First, the DSS simulates the evolution of the reservoir (the water stored and released) when applying a predefined flood …

Go to article

Computational Efficient Small Signal Model For Fast Hydraulic Simulations, Markus Neumayer, David Steffelbauer, Markus Günther, Daniela Fuchs-Hanusch Aug 2014

Computational Efficient Small Signal Model For Fast Hydraulic Simulations, Markus Neumayer, David Steffelbauer, Markus Günther, Daniela Fuchs-Hanusch

International Conference on Hydroinformatics

To increase the performance, quality and reliability of water distribution systems, implementing efficient computational and algorithmic techniques, has become a major tasks in hydraulic modelling. Examples can be found in online condition monitoring, real time control applications, or model based leakage detection and location approaches, etc. All these techniques require extensive hydraulic simulations. Well known and trusted hydraulic simulation tools like EPANET, etc. are deployed within the individual task specific code using provided interface routines. The flow dependent friction models of hydraulic systems require an iterative solution strategy to solve the problem. Although this is done efficiently using Newton-Raphson methods, …

Go to article

A Study On The Water Quality Improvement Of The Songdo Waterfront's Canal System, Dongwoo Jang, Gyewoon Choi, Sangjin Ahn Aug 2014

A Study On The Water Quality Improvement Of The Songdo Waterfront's Canal System, Dongwoo Jang, Gyewoon Choi, Sangjin Ahn

International Conference on Hydroinformatics

This study aims to investigate the flow conditions in the proposed canal system to be located in Songdo District, Incheon. Incheon Free Economic Zone (IFEZ) is concerned about the potential issues like water quality and algal problems, which will greatly affect the success of the Songdo waterfront development.Thus there is a need to ensure that natural stream flow and good water quality will maintain. In order to do this, a 3D numerical model, MIKE 3 FM was setup and used to investigate the water circulation system with respect to the operation of the four water gates present at the ends …

Go to article

Assimilation Of Heterogeneous Uncertain Data, Having Different Observational Errors, In Hydrological Models, Maurizio Mazzoleni, Leonardo Alfonso, Dimitri P. Solomatine Aug 2014

Assimilation Of Heterogeneous Uncertain Data, Having Different Observational Errors, In Hydrological Models, Maurizio Mazzoleni, Leonardo Alfonso, Dimitri P. Solomatine

International Conference on Hydroinformatics

Accurate real-time forecasting of river water level is an important issue that has to be addressed in order to prevent and mitigate water-related risk. To this end, data assimilation methods have been used to improve the forecasts ability of water model merging observations coming from stations and model simulations. As a consequence of the increasing availability of dynamic and cheap sensors, having variable life-span, space and temporal coverage, the citizens are becoming an active part in information capturing, evaluation and communication. On the other hand, it is difficult to assess the uncertain related to the observation coming from such sensors. …

Go to article

Effect Of Sediment Releasing Operation From Reservoir Outlets On The Water Treatment Plant Downstream, Jihn-Sung Lai, Fong-Zuo Lee, Cheng-Chia Huang, Gwo-Wen Hwang, Shang-Shu Shih, Wen-Da Guo, Chia-Hui Chou, Yih-Chi Tan Aug 2014

Effect Of Sediment Releasing Operation From Reservoir Outlets On The Water Treatment Plant Downstream, Jihn-Sung Lai, Fong-Zuo Lee, Cheng-Chia Huang, Gwo-Wen Hwang, Shang-Shu Shih, Wen-Da Guo, Chia-Hui Chou, Yih-Chi Tan

International Conference on Hydroinformatics

With steep slope and strong rainfall intensity, landslide and debris flow could generate huge amount of sediment yield from the watershed, typically during typhoon floods in Taiwan. As such huge amount of sediment moved into a reservoir, serious sedimentation problem reduced storage of reservoir due to decrease of flow velocity and without sufficient sediment releasing bottom outlet. As a result, using flood discharge to release sediment during Typhoon or rain fall duration is very important. This study adopts the data of field observation from outlet structures of the Shihmen reservoir to establish the operational strategies of sediment releasing rule and …

Go to article

A Study On The Flow Characteristics Influenced By Hydraulic Structure At A Channel Junction, Hyoseon Park, Dongwoo Jang, Gyewoon Choi Aug 2014

A Study On The Flow Characteristics Influenced By Hydraulic Structure At A Channel Junction, Hyoseon Park, Dongwoo Jang, Gyewoon Choi

International Conference on Hydroinformatics

Natural riversare consisting of various networks as junction andstreams. And sediment and erosion are occurred by specific stream condition. When flood season,large discharge flew in the river and river bed changed by high flow velocity. Especially junction area’s flow characteristics are very complex. The purpose of this study is to analyze the flow characteristics in channel junction, which are most influenced by large discharge like flooding and input water from tributary. We investigate the flow characteristics by using hydrodynamics and transport module in MIKE 3 FM. MIKE 3 FM model was helpful tool to analysis 3D hydrodynamics, erosion and sediment …

Go to article

A Virtual Lab Environment For Improving Students’ Understanding Of Infiltration And Runoff Processes, Tom Vanwalleghem, Cristina Aguilar, Miriam Carpintero, Antonio Espejo-Pérez, Juan Vicente Giráldez, María José Polo Aug 2014

A Virtual Lab Environment For Improving Students’ Understanding Of Infiltration And Runoff Processes, Tom Vanwalleghem, Cristina Aguilar, Miriam Carpintero, Antonio Espejo-Pérez, Juan Vicente Giráldez, María José Polo

International Conference on Hydroinformatics

Infiltration of water in the soil is a key process in the hydrological cycle and its understanding is paramount for students of any course related to Hydrology. Different equations exist, which, in function of boundary conditions and the level of detail required in any particular case can become complex to solve in an analytical way. Water movement in the soil can be described by the Richards equation, but its solution requires numerical methods. Therefore, amongst the most used ways of calculating water infiltration are the Green and Ampt method, Horton’s equation, Philip’s equation and the Curve Number method. In all …

Go to article

Estimation Of Offtake Discharge And Cross-Device Parameters Using Data Assimilation For The Automatic Control Of An Irrigation Canal, Pierre-Olivier Malaterre, David Dorchies, Jean-Pierre Baume Aug 2014

Estimation Of Offtake Discharge And Cross-Device Parameters Using Data Assimilation For The Automatic Control Of An Irrigation Canal, Pierre-Olivier Malaterre, David Dorchies, Jean-Pierre Baume

International Conference on Hydroinformatics

The automatic control of open surface hydraulic systems such as Rivers (with dams and/or hydropower plants) or irrigation canals (with gated cross-devices) almost always use hydraulic models. These models can be used in different manners, either just to test and validate controllers prior to implementation, to tune the controller parameters off-line, or used on-line in real-time. The control algorithm calculates the control action variables u, using measured variables z obtained from the real system, in order to achieve some objectives for some controlled variables y. These models have always limited precision due to unknown or wrong: parameters, input variables and …

Go to article

Eco-Hydrological Process Simulations Within An Integrated Surface Water-Groundwater Model, Michael Brian Butts, Maria Loinaz, Roberta Serena Blasone, Peter Bauer-Gottwein, Flemming Thorbjørm Hansen, Birgitte Von Christierson, Jannick Kolbjoern Jensen, Jane Bang Poulsen Aug 2014

Eco-Hydrological Process Simulations Within An Integrated Surface Water-Groundwater Model, Michael Brian Butts, Maria Loinaz, Roberta Serena Blasone, Peter Bauer-Gottwein, Flemming Thorbjørm Hansen, Birgitte Von Christierson, Jannick Kolbjoern Jensen, Jane Bang Poulsen

International Conference on Hydroinformatics

There are several key modelling challenges in addressing the complementary requirements of the Water Framework Directive and the Groundwater Directive. The first is to consider groundwater, surface water, water quality and ecosystems as an integrated system and develop modelling tools capable of representing these interactions. For example, the restoration of wetlands often requires an understanding of the interaction of surface water and groundwater quantity and quality. Secondly while static indicator-based or statistical approaches are widely used for overall management, the actual ecosystem is highly dynamic and both the actual response to different threats and impact of measures will also be …

Go to article

Assessment Of Climate Change On Flood Dynamic With Deterministic Hydrological Model. Application To The Vugia-Thubon Catchment - Viet Nam, Ngoc Duong Vo, Philippe Gourbesville Aug 2014

Assessment Of Climate Change On Flood Dynamic With Deterministic Hydrological Model. Application To The Vugia-Thubon Catchment - Viet Nam, Ngoc Duong Vo, Philippe Gourbesville

International Conference on Hydroinformatics

In recent years, Climate Change is commonly known as global warming and associated with sea level rise. Such processes are some one of the most serious challenges facing the human beings in the 21st century. Under the impact of this phenomena, extreme climatic phenomena are supposed to more frequent and serious, leading to natural disasters especially related to water. Flood risk represent a major issue especially for developing countries where the economy as well as the adapted capacity against disaster are still poor. As shown in World Bank studies, with more than 70% of the population works in the agriculture, …

Go to article

Interoperability Between Grdc's Data Holding And The Geoss Infrastructure, Volker Andres, Henning Bredel, Ralf Busskamp, Simon Jirka, Ulrich Looser, Manuela Schlummer, Adrian Strauch, Michael Utech Aug 2014

Interoperability Between Grdc's Data Holding And The Geoss Infrastructure, Volker Andres, Henning Bredel, Ralf Busskamp, Simon Jirka, Ulrich Looser, Manuela Schlummer, Adrian Strauch, Michael Utech

International Conference on Hydroinformatics

The Global Runoff Data Centre (GRDC) operates under the auspices of the World Meteorological Organization as an international data centre for hydrological data and information on a global scale. Its primary objective is to support the water and climate related programmes and projects of the United Nations, its specialised agencies, and the scientific research community on global and climate change and integrated water resources management. The Global Runoff Database maintained by the GRDC is a valuable data resource and a subset of its data is contributed to the Global Earth Observation System of Systems’ (GEOSS) freely accessible Data Core. As …

Go to article

A Model To Structure Scientific Information For Decision Makers, Rebecca Kristine Schmidt, Damian Barrett, Simon Gallant Aug 2014

A Model To Structure Scientific Information For Decision Makers, Rebecca Kristine Schmidt, Damian Barrett, Simon Gallant

International Conference on Hydroinformatics

Scientific information for decision makers needs to be discoverable and transparent so that decisions are more easily based on scientific evidence. One way to achieve these goals is to specify a robust model that structures this scientific information. This paper presents a model that governs the scientific activities, inputs and products for bioregional assessments (BAs), which provide information on the ecology, hydrology, geology and hydrogeology of a bioregion with explicit assessment of the potential direct, indirect and cumulative impacts of coal seam gas and coal mining development on water resources. This scientific information will be available for all interested parties …

Go to article

Meteomap: Generation Of Meteorological Variables For Distributed Physically-Based Hydrological Modeling, Cristina Aguilar, Javier Herrero, Agustín Millares, Miguel A. Losada, María José Polo Aug 2014

Meteomap: Generation Of Meteorological Variables For Distributed Physically-Based Hydrological Modeling, Cristina Aguilar, Javier Herrero, Agustín Millares, Miguel A. Losada, María José Polo

International Conference on Hydroinformatics

Distributed energy and water balance models require time-series surfaces of the meteorological variables involved in hydrological processes. Most of the hydrological GIS-based models apply simple interpolation techniques to extrapolate the point scale values registered at weather stations at a watershed scale. In mountainous areas, where the monitoring network ineffectively covers the complex terrain heterogeneity, simple geostatistical methods for spatial interpolation are not always representative enough, and algorithms that explicitly or implicitly account for the features creating strong local gradients in the meteorological variables must be applied. Originally developed as a meteorological pre-processing tool for a complete hydrological model (WiMMed), MeteoMap …

Go to article

Hydrological Ensemble Forecasting And Data Assimilation With An Integrated Hydrological Modelling System, Henrik Madsen, Diana Lucatero, Marc Ridler, Donghua Zhang, Jens Christian Refsgaard, Karsten Høgh Jensen Aug 2014

Hydrological Ensemble Forecasting And Data Assimilation With An Integrated Hydrological Modelling System, Henrik Madsen, Diana Lucatero, Marc Ridler, Donghua Zhang, Jens Christian Refsgaard, Karsten Høgh Jensen

International Conference on Hydroinformatics

Hydrological forecasting is an important instrument for more effective water management, such as warning and protection against water-related hazards, real-time operation of water infrastructure, improved water allocation, and environmental monitoring. Recent advances within radar rainfall estimation and nowcasting, ensemble-based numerical weather prediction (NWP), in-situ and satellite monitoring, and hydrological data assimilation are opening up new opportunities in real-time hydrological forecasting. NWP ensemble products can be used as input to hydrological forecast models to produce probabilistic forecasts and estimation of forecast uncertainty of the hydrological variables of interest. In this regard, key scientific challenges are understanding, quantification, and propagation of the …

Go to article

Floodalert: A Simplified Radar-Based Ews For Urban Flood Warning, Xavier Llort, Rafael Sánchez-Diezma, Alvaro Rodríguez, David Sancho, Marc Berenguer, Daniel Sempere-Torres Aug 2014

Floodalert: A Simplified Radar-Based Ews For Urban Flood Warning, Xavier Llort, Rafael Sánchez-Diezma, Alvaro Rodríguez, David Sancho, Marc Berenguer, Daniel Sempere-Torres

International Conference on Hydroinformatics

Urban floods can be caused by intense rainfall accumulations in short time periods that eventually exceed the capacity of the sewer networks. Despite the efforts made in the last years in all cities to increase the sewer’s capacity many cities are still exposed to these heavy rainfall events. In this work, we present a simplified flood Early Warning System, called FloodAlert, based on the use of radar observations to issue local flood warnings. Although precipitation accumulation estimates based on radar observations may suffer from different sources of error, they may also be the quickest way to obtain a reliable estimate …

Go to article

Hidromet: A Cloud-Based Ews Platform For Real Time Urban Flood Warning, Alvaro Rodríguez, Xavier Llort, David Sancho, Rafael Sánchez-Diezma, Ramon Bella, Vicente Gomez Aug 2014

Hidromet: A Cloud-Based Ews Platform For Real Time Urban Flood Warning, Alvaro Rodríguez, Xavier Llort, David Sancho, Rafael Sánchez-Diezma, Ramon Bella, Vicente Gomez

International Conference on Hydroinformatics

Urban real time flood’s Early Warning Systems have been traditionally based on the use of punctual precipitation observations (raingauges) to model the sewer network’s behaviour by means of hydraulic models. Since a key issue in the EWS is the leadtime in detecting potential risks, Hidromet takes advantage of radar nowcasting techniques to feed a hydraulic model, not only with observed precipitation by raingauges, but also with forecasted precipitation for the following few hours. Radar nowcasting techniques allow forecasting the precipitation with a high degree of accuracy. This fact, together with the rapid update of the forecasts (typically around 10 minutes), …

Go to article

Data-Driven Surrogate Models For Flood Defence Failure Estimation : “Jarillon” Of Cali, Colombia Case Study, Juan Aguilar, Jord Warmink, Ralph Schielen, Suzanne Hulscher Aug 2014

Data-Driven Surrogate Models For Flood Defence Failure Estimation : “Jarillon” Of Cali, Colombia Case Study, Juan Aguilar, Jord Warmink, Ralph Schielen, Suzanne Hulscher

International Conference on Hydroinformatics

The city of Cali is the main urban center of the south-western part of Colombia. It is located along the Cauca river, the second largest in the country. At the moment, the embankment located along the left margin that protects the city is designed for a return period of 100 years. In this study is intended to make a probabilistic analysis for dike failure for the present state of this flood defence. The water levels inside the main stream are highly sensitive to the peak discharge of upstream near tributaries which must be included in the analysis. An existent hydrodynamic …

Go to article

Volunteered Geographic Information For Water Management: A Prototype Architecture, Maria Antonia Brovelli, Luca Dotti, Marco Minghini, Massimo Pancaldi, Giorgio Zamboni Aug 2014

Volunteered Geographic Information For Water Management: A Prototype Architecture, Maria Antonia Brovelli, Luca Dotti, Marco Minghini, Massimo Pancaldi, Giorgio Zamboni

International Conference on Hydroinformatics

Driven by Web 2.0 technology and the almost ubiquitous presence of mobile devices, Volunteered Geographic Information (VGI) is knowing an unprecedented growth. These notable technological advancements have opened fruitful perspectives also in the field of water management and protection, raising the demand for a reconsideration of policies which also takes into account the emerging trend of VGI. This research investigates the opportunity of leveraging such technology to involve citizens equipped with common mobile devices (e.g. tablets and smartphones) in a campaign of report of water-related phenomena. The work is carried out in collaboration with ADBPO - Autorità di bacino del …

Go to article

Hydrodynamic And Water Quality Surrogate Modeling For Reservoir Operation, Juan Aguilar, Schalk-Jan Van Andel, Micha Werner, Dimitri P. Solomatine Aug 2014

Hydrodynamic And Water Quality Surrogate Modeling For Reservoir Operation, Juan Aguilar, Schalk-Jan Van Andel, Micha Werner, Dimitri P. Solomatine

International Conference on Hydroinformatics

A methodology is developed for reservoir release decisions considering forecasted downstream dissolved oxygen local conditions. River water quality management using reservoirs focuses mainly on how to develop a release schedule that may improve downstream conditions based on the seasonal change of the water quality within the reservoir. This improvement, however does not take into account the downstream local water quality state, which in certain cases might be more important, as the pollutant load downstream could be diluted with the upstream available volume released from the reservoir. Field sampling collected data suggest that the dissolved oxygen concentration decay produced by polluted …

Go to article

Evaluating North Sea Water Level Monitoring Network Considering Uncertain Information Theory Quantities, Leonardo Alfonso, Elena Ridolfi, Sandra Gaytan, Francesco Napolitano, Fabio Russo Aug 2014

Evaluating North Sea Water Level Monitoring Network Considering Uncertain Information Theory Quantities, Leonardo Alfonso, Elena Ridolfi, Sandra Gaytan, Francesco Napolitano, Fabio Russo

International Conference on Hydroinformatics

Information-theory provides, among others, conceptual methods to quantify the amount of information contained in a random variable, as well as methods to quantify the amount of information contained and shared among two or more variables. Although these concepts have been successfully applied in Hydrology and other fields, the valuation of these quantities is sensible to different parameters used to estimate the probabilities that underline the entropy concept. Typical examples are the bin size of histograms used to compute probabilities and the Kendall correlation coefficient used to estimate copula entropy. The selection of these parameters has subsequent effects on other Information …

Go to article

Model Predictive Control Of Water Levels In A Navigation Canal Affected By Resonance Waves, Klaudia Horváth, Eric Duviella, Mihály Petreczky, Lala Rajaoarisoa, Karine Chucket Aug 2014

Model Predictive Control Of Water Levels In A Navigation Canal Affected By Resonance Waves, Klaudia Horváth, Eric Duviella, Mihály Petreczky, Lala Rajaoarisoa, Karine Chucket

International Conference on Hydroinformatics

In order to operate navigation canals several requirements need to be met: keeping minimum ecological flow, flood protection, but also for safe operation the water level has to be kept within a certain range around the normal navigation level. The water level is disturbed by several factors: known (measured tributaries) and unknown (unknown tributaries, rain) inputs. However, the most important one is the operation of the locks. If the navigation reach is bounded by locks that overcome large elevation differences, their operation can create big disturbances. These locks should be operated fast enough to allow the crossing of several boats, …

Go to article

Offset Free Model Predictive Control Of An Open Water Reach, Boran Ekin Aydin, Peter-Jules Van Overloop, Xin Tian Aug 2014

Offset Free Model Predictive Control Of An Open Water Reach, Boran Ekin Aydin, Peter-Jules Van Overloop, Xin Tian

International Conference on Hydroinformatics

Model predictive control (MPC) is a powerful tool which is used more and more to managing water systems such as reservoirs over a short-term prediction horizon. However, due to unknown disturbances present in the water system and other uncertainties, there is always a mismatch between the model and the actual system. To overcome this mismatch and achieve offset free control of the water system, the internal model of the MPC is updated by adding the disturbance dynamics of the actual system by means of a disturbance model. In this paper, the conditions to achieve offset free control for an open …

Go to article

Hydrauric Analysis On Water Stage Change Along The Submerged Weir And Tides Effect In Han River, Suk-Hwan Jang, Ji-Hwan Oh, Hong-Soo Kim, Man-Kyu Song, Dal-Sik Woo Aug 2014

Hydrauric Analysis On Water Stage Change Along The Submerged Weir And Tides Effect In Han River, Suk-Hwan Jang, Ji-Hwan Oh, Hong-Soo Kim, Man-Kyu Song, Dal-Sik Woo

International Conference on Hydroinformatics

Sinkok submerged weir in Han river, Seoul Korea was built in early 1980’s for the purpose of water level maintenance and protection from sea water intrusion from the estuary. Its length is almost 1 km and 2.4 meter height which has two composite structures of rigid and movable weir. Huge wetland developed as the results of weir construction just down to the weir. However, recently social conflicts for the weir removal occurred for the river rehabilitation and aqua-eco system recover. This study focused on hydraulic analysis, especially water level changes in terms of with and without submerged weir along the …

Go to article

First Prev Next Last