Effect Of Sediment Releasing Operation From Reservoir Outlets On The Water Treatment Plant Downstream,
2014
City University of New York (CUNY)
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 …
A Study On The Flow Characteristics Influenced By Hydraulic Structure At A Channel Junction,
2014
City University of New York (CUNY)
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 …
Setting Priorities On The Functional Status Of Hydraulic Structures In Mountainous Catchments,
2014
City University of New York (CUNY)
Setting Priorities On The Functional Status Of Hydraulic Structures In Mountainous Catchments, V. Juliette Cortes, Simone Sterlacchini, Thom Bogaard, Simone Frigerio, Luca Schenato, Alessandro Pasuto
International Conference on Hydroinformatics
The frequent inspection of hydraulic structures in mountain catchments is important due to the changing interaction among water-related processes that take place in the context of hydro-meteorological hazards such as debris flow and flash floods. At first level inspections, reports from survey protocols carried out by trained citizen-volunteers are combined to provide an index that represent the status of the structure. The survey protocols aim at identifying needs for cleaning of obstructions or to pre-screen potential problems for a second level inspection or more technical and detailed inspection. Thus, reports are focused on the functional status for the following parameters: …
Opensdm - An Open Sensor Data Management Tool,
2014
City University of New York (CUNY)
Opensdm - An Open Sensor Data Management Tool, David Camhy, Günter Gruber, David Steffelbauer, Thomas Hofer, Dirk Muschalla
International Conference on Hydroinformatics
Exchange of scientific data and metadata between single users or organizations is a challenging task due to differences in data formats, the genesis of data collection, ontologies and prior knowledge of the users. Different data storage requirements, mostly defined by the structure, size and access scenarios, require also different data storage solutions, since there is no and there cannot be a data format which is suitable for all tasks and needs that occur especially in a scientific workflow. Besides data, the generation and handling of additional corresponding metadata leads us to the additional challenge of defining the "meaning" of data, …
Hybrid Control-Oriented Modeling Of Combined Sewer Networks: Barcelona Case Study,
2014
City University of New York (CUNY)
Hybrid Control-Oriented Modeling Of Combined Sewer Networks: Barcelona Case Study, Bernat Joseph-Duran, Carlos Ocampo-Martinez, Gabriela Cembrano
International Conference on Hydroinformatics
A hybrid linear model for real-time optimization-based control of a combined sewer network has been developed to be used for the minimization of pollution during storm events. The model takes into account delays and attenuation in sewers together with piecewise linear approximations for flow over weirs, overflows in junctions and flow re-entering the network after overflows. Using the proposed model, an Optimal Control Problem (OCP) is formulated, which can be efficiently solved by means of a mixed integer linear or quadratic programming problem. The performance of a Model Predictive Control (MPC) strategy solving consecutive OCPs is assessed by means of …
A Virtual Lab Environment For Improving Students’ Understanding Of Infiltration And Runoff Processes,
2014
City University of New York (CUNY)
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 …
Estimation Of Offtake Discharge And Cross-Device Parameters Using Data Assimilation For The Automatic Control Of An Irrigation Canal,
2014
City University of New York (CUNY)
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 …
Vulnerability Assessment On Water Management For Climate Change Adaptation : Case Study To Gochang County In South Korea,
2014
City University of New York (CUNY)
Vulnerability Assessment On Water Management For Climate Change Adaptation : Case Study To Gochang County In South Korea, Namjung Jang, Seounghyun Im, Hyun-Han Kwon, Sang-Woo Park, Dong-Heui Kwak
International Conference on Hydroinformatics
Currently, 1.6 billion people live in countries and regions with absolute water scarcity and the number is expected to rise to 2.8 billion people by 2025(World Bank). Climate change will make water security more difficult and costly to achieve. Smart Water Management of water resources using an integrated approach with IT (Information Technology) will play a critical role in adapting climate change and mitigate social, economic and environmental impacts. Gochang County in Jeonbuk Province (South Korea) is one of the vulnerable areas to climate change, because it is a particularly high dependency to agricultural industry, increasing proportion of elderly people, …
Vulnerability Assessment Of Water Distribution Systems Using Directed And Undirected Graph Theory,
2014
City University of New York (CUNY)
Vulnerability Assessment Of Water Distribution Systems Using Directed And Undirected Graph Theory, Kegong Diao, Raziyeh Farmani, Guangtao Fu, David Butler
International Conference on Hydroinformatics
Vulnerability assessment is a promising approach to identifying critical components of complex systems. In such systems, critical components could be crucial links and strategic locations for management and control. Managing those components better could, in turn, improve or reinforce a system’s resilience to shock events. However, fully comprehensive vulnerability assessments cannot be guaranteed as enumerating all possible shock events in complex systems is computationally intensive and almost infeasible. Consequently, the important role of some components might be neglected. This paper explores the feasibility of using a dual approach vulnerability assessment for water distribution systems (WDSs). Specifically, complex network analysis (e.g. …
Eco-Hydrological Process Simulations Within An Integrated Surface Water-Groundwater Model,
2014
City University of New York (CUNY)
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 …
Assessment Of Climate Change On Flood Dynamic With Deterministic Hydrological Model. Application To The Vugia-Thubon Catchment - Viet Nam,
2014
City University of New York (CUNY)
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, …
Interoperability Between Grdc's Data Holding And The Geoss Infrastructure,
2014
City University of New York (CUNY)
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 …
Deterministic Hydrological Model For Flood Risk Assessment Of Mexico City,
2014
City University of New York (CUNY)
Deterministic Hydrological Model For Flood Risk Assessment Of Mexico City, Vargas Bringas Rafael, Gourbesville Philippe
International Conference on Hydroinformatics
Mexico City is facing problems of flooding in some areas at certain times of the year, causing important losses and damages on properties and residents including some casualties. Therefore, it is important to carry out a flood risk assessment in the catchment of Mexico City and estimate damages of probable flood events. However, limited data of observed discharges and water depths in the main rivers of the city are available, and this represents an obstacle for the understanding of flooding in Mexico City. The objective of the developed tool is to provide an efficient support to management of the flood …
Calibration Strategies Designed For Long Term Sediment Transport Modelling,
2014
City University of New York (CUNY)
Calibration Strategies Designed For Long Term Sediment Transport Modelling, Robert Klar, Stefan Achleitner, Stefan Jocham, Markus Aufleger
International Conference on Hydroinformatics
The presented work deals with the calibration of a 2D numerical model for the simulation of long term bed load transport. A settled basin along an alpine stream was used as a case study. The focus is to parameterise the used multi fractional transport model such that a dynamically balanced behavior regarding erosion and deposition is reached. The used 2D hydrodynamic model utilizes a multi-fraction multi-layer approach to simulate morphological changes and bed load transport. The mass balancing is performed between three layers: a top mixing layer, an intermediate subsurface layer and a bottom layer. Using this approach bears computational …
A Model To Structure Scientific Information For Decision Makers,
2014
City University of New York (CUNY)
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 …
Extending The Finnish Flood Information System To Include Flood Risk Mapping,
2014
City University of New York (CUNY)
Extending The Finnish Flood Information System To Include Flood Risk Mapping, Mikko Sane, Atte Virtanen, Riikka Repo
International Conference on Hydroinformatics
The sound flood risk management needs more and more effective information systems. In addition to flood risk management planning, the past floods in Finland have proved that up-to-date risk information is essential in emergencies. Therefore in addition to the water system forecasts and flood warnings, the information on potential exposed elements and flood damages are playing a significant role in maintaining an overview of the national flood situation. The national flood information system of Finland, established in 2006 and extended since 2010, brings together the essential information on floods under a single user interface. At the Finnish Environment Institute SYKE, …
River Flows Prediction By Ensemble Model,
2014
City University of New York (CUNY)
River Flows Prediction By Ensemble Model, Milan Cisty, Celar Lubomir
International Conference on Hydroinformatics
This review paper will deal with the possibilities of applying the R programming language in water resources and hydrologic applications in education and research. The objective of this paper is to present some features and packages that make R a powerful environment for analyzing data from the hydrology and water resources management fields, hydrological modelling, the post-processing of the results of such modelling, and other tasks.
The Benthic Geoecology Model Within The Modular System For Shelves And Coasts (Mossco),
2014
City University of New York (CUNY)
The Benthic Geoecology Model Within The Modular System For Shelves And Coasts (Mossco), Mohammad Hassan Nasermoaddeli, Carsten Lemmen, Richard Hofmeister, Frank Koesters, Knut Klingbeil
International Conference on Hydroinformatics
The Modular System for Shelves and Coasts (MOSSCO) integrates physical, biological, chemical and geological models of shelves and coasts for the North Sea and Baltic Sea in an exchangeable way. The MOSSCO software forms a coupling framework for exchanging data and models, which distinguishes between physical domains (Earth System compartments such as the benthic and pelagic zone) and processes (such as benthic geochemistry, physical erosion and biological stabilization). Information exchange across physical domains with different grids and time steps are managed using the ESMF (Earth System Modelling Framework), whereas coupling of processes within individual modules is achieved using FABM (Framework …
Numerical Modeling Of Otec Thermal Discharges In Coastal Waters,
2014
City University of New York (CUNY)
Numerical Modeling Of Otec Thermal Discharges In Coastal Waters, Jongkyu Kim, Hyeon-Ju Kim
International Conference on Hydroinformatics
Thermal discharge from industrial outfalls is categorized into two major classes based on their density. First class is the effluent that has a higher density than that of the ambient water body. The second class is the effluent that has a lower density than that of the ambient water body. Due to the effect of several factors such as tides, waves, winds, river discharges, thermal effluents etc., the mixing characteristics of OTEC (Ocean Thermal Energy Conversion) thermal plume is much complicated. In this study we try to identify the mixing and dispersion characteristics of coastal waters to consider their physical …
Meteomap: Generation Of Meteorological Variables For Distributed Physically-Based Hydrological Modeling,
2014
City University of New York (CUNY)
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 …
