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Full-Text Articles in Physical Sciences and Mathematics
Analysis Of Semi-Distributed And Global Hydrological Models In The Central Tropical Basins Of The Gulf Of Mexico To The Effects Of Extreme Hydrometeorological Phenomena, Sara Patricia Ibarra Zavaleta, Mariana Castañeda González, Rabindranarth Romero López, Eduardo Castillog Onzalez, Alberto Brando Báez Camarena, Annie Poulin, Mathias Glaus, Robert Hausler
Analysis Of Semi-Distributed And Global Hydrological Models In The Central Tropical Basins Of The Gulf Of Mexico To The Effects Of Extreme Hydrometeorological Phenomena, Sara Patricia Ibarra Zavaleta, Mariana Castañeda González, Rabindranarth Romero López, Eduardo Castillog Onzalez, Alberto Brando Báez Camarena, Annie Poulin, Mathias Glaus, Robert Hausler
International Conference on Hydroinformatics
In the last years extreme hydrometeorological phenomena have increased in number and intensity affecting the inhabitants of various regions, an example of these effects are the central basins of the Gulf of Mexico (CBGM) that they have been affected by 55.2% with floods and especially the state of Veracruz (1999-2013), leaving economic, social and environmental losses. Mexico currently lacks sufficient hydrological studies for the measurement of volumes in rivers, since is convenient to create a hydrological model (HM) suited to the quality and quantity of the geographic and climatic information that is reliable and affordable. Therefore this research compares the …
Application Of 1d And 2d Numerical Models For Assessing And Visualizing Effectiveness Of Natural Flood Management (Nfm) Measures, Sohan Ghimire, Mark Wilkinson, Gillian Donaldson-Selby
Application Of 1d And 2d Numerical Models For Assessing And Visualizing Effectiveness Of Natural Flood Management (Nfm) Measures, Sohan Ghimire, Mark Wilkinson, Gillian Donaldson-Selby
International Conference on Hydroinformatics
Natural Flood Management (NFM) techniques that include alteration, restoration or use of landscape features, have emerged as a novel way of reducing flood risk in Scotland. NFM aims to reduce the peak flood downstreamincreasing the time available to prepare for flood. Water storage ponds are very effective for this purpose. The aim of the paper is to present findings of a modelling approach to floodinundation and risk assessment, and its application for assessing the effectiveness of wetland storage ponds as NFM measures. The study was undertaken in a rural catchment (Tarland Burn, area ~74 km2) located in Aberdeenshire, north-east Scotland. …
Flood Resilience Assessment In Urban Drainage Systems Through Multi-Objective Optimisation, Carlos Martínez-Cano, Beheshtah Toloh, Arlex Sanchez-Torres, Zoran Vojinović, Damir Brdjanovic
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 …
An Integrated Approach To Simulate Flooding Due To River Dike Breach, Yohannis Birhanu Tadesse, Peter Fröhle
An Integrated Approach To Simulate Flooding Due To River Dike Breach, Yohannis Birhanu Tadesse, Peter Fröhle
International Conference on Hydroinformatics
This paper presents an integrated approach that enables the simultaneous modeling of dike breaching process and flood propagation. The dike breaching process is modelled with a simple breach model implemented into a 2-dimensional hydrodynamic flood model – Telemac2D. Telemac2D models the propagation of the arising flood into the hinterland. The breach model generalizes dike breaching process in two general stages. In the first stage, dike breaching is predominantly vertical with limited lateral breach growth; and in the second stage breach grows only laterally. The breach model requires breach location, breach duration, and length and axis of dike affected by the …
Stability Criterion For A Flooded Human Body Under Various Ground Slopes, Junqiang Xia, Roger Falconer, Peng Guo, Anchuan Gu
Stability Criterion For A Flooded Human Body Under Various Ground Slopes, Junqiang Xia, Roger Falconer, Peng Guo, Anchuan Gu
International Conference on Hydroinformatics
Extreme flood events often lead to heavy casualties, with flood risk to humans varying with the flow conditions, the body attributes, and the ground slopes. Therefore, it is important to propose an appropriate stability criterion for a flooded human body under various ground slopes. In this study, a formula for the incipient velocity of a flooded human body at toppling instability was derived, based on a mechanics-based analysis. The effect of body buoyancy and the influence of a non-uniform upstream velocity profile acting on the flooded human body under a sloping ground were considered in the formula derivation. 186 tests …
Modeling The Effects Sea Level Rise On Flooding In The Lower Niger River, Zahrah Naankwat Musa, Ioana Popescu, Arthur E. Mynett
Modeling The Effects Sea Level Rise On Flooding In The Lower Niger River, Zahrah Naankwat Musa, Ioana Popescu, Arthur E. Mynett
International Conference on Hydroinformatics
The Niger River bifurcates into the Nun and Forcados rivers as it flows through the Niger delta, with the Forcados River taking 46% of the discharge and the Nun River taking 54%. Within the last fifteen years the Niger delta coastal zone has experienced peak floods between September and October due to intense rains from upstream. Many studies including the United Nations Framework on Convention on Climate Change (UNFCCC) indicate that the Niger delta region could be inundated with water due to the effects of climate change. According to local experts, the Niger delta is subsiding at over 25mm/annum; a …
Regional Versus Physically-Based Methods For Flood Inundation Modelling In Data Scarce Areas: An Application To The Blue Nile, Kun Yan, Florian Pappenberger, Yakob M. Umer, Dimitri P. Solomatine, Giuliano Di Baldassarre
Regional Versus Physically-Based Methods For Flood Inundation Modelling In Data Scarce Areas: An Application To The Blue Nile, Kun Yan, Florian Pappenberger, Yakob M. Umer, Dimitri P. Solomatine, Giuliano Di Baldassarre
International Conference on Hydroinformatics
One of the main obstacles in mapping flood hazard in data scarce areas is the difficulty in estimating the design flood, i.e. river discharge corresponding to a given return period. This exercise can be carried out using regionalization techniques, which are based on flood data of regions with similar hydro-climatic conditions, or employing physically based model cascades. In this context, we compared the flood extents maps derived for a river reach of the Blue Nile following two alternative methods: i) regional envelope curve (REC), whereby design floods (e.g. 1-in-20 and 1-in-100 year flood peaks) are derived from African envelope curves …
Bayesian Model Averaging Approach For Reducing Urban Flooding Damage Estimation Uncertainty, Vincenza Notaro, Chiara Maria Fontanazza, Gabriele Freni
Bayesian Model Averaging Approach For Reducing Urban Flooding Damage Estimation Uncertainty, Vincenza Notaro, Chiara Maria Fontanazza, Gabriele Freni
International Conference on Hydroinformatics
Uncertainty analysis is useful to define the level of reliability of a modelling application, but operational methods are needed to identify the best modelling structure for a specific problem based on uncertainty reduction criteria. One interesting example is given by flood damage estimation problem where different possible modelling solution and flood damage estimation can be used depending on the case study. Past literature showed that several modelling structures may be equally reliable in terms of calibration ability but they may produce different uncertainty levels. The use of the Bayesian approach for uncertainty analysis has been stimulated by its rigorous theoretical …
Flash Flood Simulation Using Geomorphic Unit Hydrograph Method: Case Study Of Headwater Catchment Of Xiapu River Basin, China, Dawei Zhang, Jin Quan, Fan Wang, Xiaoyan He
Flash Flood Simulation Using Geomorphic Unit Hydrograph Method: Case Study Of Headwater Catchment Of Xiapu River Basin, China, Dawei Zhang, Jin Quan, Fan Wang, Xiaoyan He
International Conference on Hydroinformatics
The flash flood refers to flood produced by heavy local rainfalls and often occurs in mountainous areas. It is characterized by a quick rise of water level causing a great threat to the lives of those exposed. Many countries and regions face the threat of flash floods. However, some traditional hydrological models can hardly simulate the flash flood process well due to the lack of hydrological data and the insufficient understanding of complicated runoff mechanism in mountainous and hilly areas. According to this condition, a new hydrological model based on the framework of Xinanjiang model, widely used in humid and …
A Probabilistic Tsunami Model For Chile, Vaclav Rara, Cristina Arango, Petr Puncochar, Goran Trendafiloski, Chris Ewing, Adam Podlaha, Deepak Vatvani, Maarten Van Ormondt
A Probabilistic Tsunami Model For Chile, Vaclav Rara, Cristina Arango, Petr Puncochar, Goran Trendafiloski, Chris Ewing, Adam Podlaha, Deepak Vatvani, Maarten Van Ormondt
International Conference on Hydroinformatics
In disaster-prone regions such as Chile, catastrophe models help (re)insurers to understand and quantify the risks facing their businesses. The 2010 (M8.8) Maule (Chile) earthquake highlighted the need for quantifying losses not only from primary perils (in this case earthquake) but also from secondary perils such as tsunamis, which contribute to the overall event losses but are not often modelled. This paper presents a new catastrophe model for Chile developed by Impact Forecasting (IF) in collaboration with Aon Benfield Research partners. The model has the capability to model losses due to earthquake (ground-shaking) and induced tsunamis along the Chilean coast …