scholarly journals Urban Flood Scaling Using Hydrologic and Hydraulic Models with Inception for Early Warning

2019 ◽  
pp. 333-340
Author(s):  
Romeji Ngangbam ◽  
◽  
Amaljit Bharali ◽  
Sonamani Kangjam
Keyword(s):  
Early Warning ◽  
Urban Flood ◽  
Hydraulic Models

Linking of 2D and Pipe hydraulic models at fine spatial scales

2007 ◽  
Vol 2 (2) ◽  
Author(s):  
R.S. Carr ◽  
G.P. Smith
Keyword(s):  
Overland Flow ◽  
Spatial Scales ◽  
Urban Environments ◽  
Flow Paths ◽  
Urban Flood ◽  
Hydraulic Models ◽  
Small Complex ◽  
Modelling Techniques ◽  
Flood Risk Mapping ◽  
Fine Resolution

Linking of two-dimensional overland flow hydraulic models with one-dimensional storm water pipe models at very fine resolution is becoming a standard approach for urban flood investigations. This paper describes the application of such an approach to a variety of small, complex urbanised catchments in Australia and New Zealand. A benefit of this approach is that previously hidden information in terms of secondary flow paths and cross-flows become apparent, an outcome that is not possible with traditional 1D modelling tools. Generation of flood risk mapping is much simpler through the use of direct GIS interfaces to the model result files, making the modelling and presentation process much more transparent. The paper will describe the application of the models, the calibration approach and some specialised modelling techniques when working at such fine spatial resolution in urban environments.

scholarly journals A spatial Bayesian network model to assess the benefits of early warning for urban flood risk to people

2016 ◽  
Vol 16 (6) ◽  
pp. 1323-1337 ◽  
Author(s):  
Stefano Balbi ◽  
Ferdinando Villa ◽  
Vahid Mojtahed ◽  
Karin Tessa Hegetschweiler ◽  
Carlo Giupponi
Keyword(s):  
Bayesian Network ◽  
Network Model ◽  
Early Warning ◽  
Flood Risk ◽  
Human Impacts ◽  
Probability Distributions ◽  
Warning System ◽  
Post Traumatic Stress ◽  
Bayesian Network Model ◽  
Urban Flood

Abstract. This article presents a novel methodology to assess flood risk to people by integrating people's vulnerability and ability to cushion hazards through coping and adapting. The proposed approach extends traditional risk assessments beyond material damages; complements quantitative and semi-quantitative data with subjective and local knowledge, improving the use of commonly available information; and produces estimates of model uncertainty by providing probability distributions for all of its outputs. Flood risk to people is modeled using a spatially explicit Bayesian network model calibrated on expert opinion. Risk is assessed in terms of (1) likelihood of non-fatal physical injury, (2) likelihood of post-traumatic stress disorder and (3) likelihood of death. The study area covers the lower part of the Sihl valley (Switzerland) including the city of Zurich. The model is used to estimate the effect of improving an existing early warning system, taking into account the reliability, lead time and scope (i.e., coverage of people reached by the warning). Model results indicate that the potential benefits of an improved early warning in terms of avoided human impacts are particularly relevant in case of a major flood event.

Progress of Urban Flood Research and Overall Handling of Urban Flood in China

2014 ◽  
Vol 955-959 ◽  
pp. 1881-1888 ◽  
Author(s):  
Zhe Yuan ◽  
Deng Hua Yan ◽  
Zhi Yong Yang ◽  
Jun Yin
Keyword(s):  
Urban Development ◽  
Early Warning ◽  
Climatic Changes ◽  
Future Research ◽  
Effective Solution ◽  
Urban Floods ◽  
Urban Flood ◽  
Flood Monitoring ◽  
Disaster Losses ◽  
Modern Technologies

Under the background of the climatic changes and the rapid urban development, the occurring frequency of urban floods grows increasingly, the influencing areas gradually spread, and the disaster losses become increasingly severe. The handling of urban flood has already become an issue requiring quick and effective solution during human social developing process. First, the causes of urban flood and the characteristics of disaster losses were analyzed under a changing environment. Then, Combined with the new progresses of relevant researches conducted at home and abroad, the key problems found in the research of urban flood was systematically studied. Moreover, it was pointed out that the urban flood monitoring, assessment, early warning forecast and handling based on modern technologies would become the highlights in the future research. On this basis, the paper summarized the problems existing in the flood handling of Chinese cities and discussed the overall handling frameworks.

scholarly journals Variance based sensitivity analysis of 1D and 2D hydraulic models: An experimental urban flood case

2018 ◽  
Vol 109 ◽  
pp. 167-181 ◽  
Author(s):  
S. Chen ◽  
P.-A. Garambois ◽  
P. Finaud-Guyot ◽  
G. Dellinger ◽  
R. Mosé ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Urban Flood ◽  
Hydraulic Models

Comparison of 1D/1D and 1D/2D Coupled (Sewer/Surface) Hydraulic Models for Urban Flood Simulation

2009 ◽  
Vol 135 (6) ◽  
pp. 495-504 ◽  
Author(s):  
Jorge Leandro ◽  
Albert S. Chen ◽  
Slobodan Djordjević ◽  
Dragan A. Savić
Keyword(s):  
Flood Simulation ◽  
Urban Flood ◽  
Hydraulic Models

scholarly journals Urban Flood Prevention and Early Warning System in Jinan City

2018 ◽  
Vol 38 ◽  
pp. 03047
Author(s):  
Shiyuan Feng ◽  
Qingguo Li
Keyword(s):  
Early Warning ◽  
Urban Areas ◽  
Flood Control ◽  
Comprehensive Evaluation ◽  
Warning System ◽  
Fuzzy Comprehensive Evaluation ◽  
Urban Flood ◽  
Evaluation Indexes ◽  
Jinan City ◽  
High Standards

The system construction of urban flood control and disaster reduction in China is facing pressure and challenge from new urban water disaster. Under the circumstances that it is difficult to build high standards of flood protection engineering measures in urban areas, it is particularly important to carry out urban flood early warning. In Jinan City, a representative inland area, based on the index system of early warning of flood in Jinan urban area, the method of fuzzy comprehensive evaluation was adopted to evaluate the level of early warning. Based on the cumulative rainfall of 3 hours, the CAflood simulation results based on cellular automaton model of urban flooding were used as evaluation indexes to realize the accuracy and integration of urban flood control early warning.

Emergency management system of urban waterlogging based on cloud computing platform and 3D visualization

2020 ◽  
Vol 39 (4) ◽  
pp. 5595-5608
Author(s):  
Deng Lianbing ◽  
Li Daming ◽  
Cai Zhiming
Keyword(s):  
Cloud Computing ◽  
Emergency Management ◽  
Early Warning ◽  
Management System ◽  
3D Visualization ◽  
Simulation Accuracy ◽  
Urban Flood ◽  
Computing Platform ◽  
Emergency Management System ◽  
Cloud Computing Platform

In recent years, the problem of urban waterlogging has been highly valued. The application of information technology and image simulation to emergency management of urban waterlogging can improve urban flood prevention and disaster reduction capabilities and reduce disaster losses. In this paper, the author analyze the emergency management system of urban waterlogging based on cloud computing platform and 3D visualization. Collect data through street monitoring and drones, re-analyze the collected images, and screen cities for easy waterlogging. Researchers can rely on the high-performance computing power of the system and the visualized integrated environment to achieve online monitoring and early warning of waterlogging and 3D visual display. The system can provide early warning services in the form of alarms for monitoring results that exceed the threshold, and use mobile agents to send messages to relevant personnel in a variety of ways, providing fast auxiliary decision-making services. The simulation results show that the system has high simulation accuracy and can provide fast and efficient emergency services.

scholarly journals Study On Urban Rainstorm Pattern of Short-Duration Double-Peak

2021 ◽  
Author(s):  
Jinping Zhang ◽  
Lingli Kong ◽  
Hongyuan Fang
Keyword(s):  
Short Duration ◽  
Early Warning ◽  
Rainfall Pattern ◽  
Secondary Peak ◽  
Single Peak ◽  
Double Peak ◽  
Urban Flood ◽  
Function Fitting ◽  
Flood Planning ◽  
The Impact

Abstract At present, researches on urban short-duration rainstorm patterns mainly focus on single-peak rainstorm patterns, and rarely involve double-peak rainstorm patterns, or convert double-peak patterns into single-peak patterns directly, even ignore the impact of double-peak patterns, which directly affects the urban flood planning and early warning and rescue. To scientifically and rationally deduce the urban short duration double-peak rain pattern, this paper proposes a new function fitting rain pattern method by constructing double-peak virtual rain peak rainfall and virtual rain peak coefficient (RPC), based on the idea of convert double-peak to singel-peak, then revert to the double-peak, directly deducing the double-peak rain pattern.The results show that (1) The rain pattern derived by the function fitting rain pattern method(FFRPM) can effectively improve the accuracy of the double-peak rain pattern, and is also more practical; (2) The fitting degree of function fitting rainfall pattern and actual rain pattern is more than 90%, accounting for 80%, the fitting degree of main and secondary peak rainfall is more than 90%, with an average of about 95%; the accuracy of the main and secondary peak positions is also relatively high; (3) Compared with the P&C rain pattern method(RPM), whether the overall accuracy or local peak rainfall, the FFRPM has the higher accuracy, especially more accurate on rain peak rainfall.

Sign in / Sign up

Export Citation Format

Share Document