نتایج جستجو برای: urban floods

تعداد نتایج: 181048  

2017
Shabab Nasir Farhat Jabeen Sadia Abbas Iram Nasir Mustapha Debboun

BACKGROUND The population of mosquitoes is mainly influenced by the biotic and abiotic factors. Although Aedes aegypti was reported until 1960's in the Punjab, Pakistan, the population has increased dramatically since 2009 and caused severe epidemics in 2011 due to heavy floods and rains. Thus, this study was carried out to know the effect of biotic and abiotic factors on the population of Aede...

2004
CHRISTOPHER T. ROBINSON URS UEHLINGER MICHAEL T. MONAGHAN

The effects of multiple experimental floods in the same year on the ecology of a river (River Spöl) below a large reservoir were investigated. In the flood year (2000), three floods of different magnitude (10 m/s on 15 June, 25 m/s on 5 July, and 10 m/s on 10 August) were implemented, each lasting 7–8 h. Regulated baseflow discharge was maintained at less than 2.5 m/s. Samples of macroinvertebr...

2016
Zhi-Dong Liu Jing Li Ying Zhang Guo-Yong Ding Xin Xu Lu Gao Xue-Na Liu Qi-Yong Liu Bao-Fa Jiang

Understanding the potential links between floods and bacillary dysentery in China is important to develop appropriate intervention programs after floods. This study aimed to explore the distributed lag effects of floods on bacillary dysentery and to identify the vulnerable groups in Huaihua, China. Weekly number of bacillary dysentery cases from 2005-2011 were obtained during flood season. Floo...

2006
ELIZABETH A. BERGEY VINCENT H. RESH

—The effect of floods and base flow on temporal variation in algal biomass on small smooth streambed stones and creviced sand-cases of the caddisfly (Insecta: Trichoptera) Gumaga nigricula was examined in Big Sulphur Creek in coastal Northern California. Replicates of stones and cases were sampled 34 times over a 14 mo period that included nine floods. Stones had ;23 the algal biomass of cases,...

A Aghdasi, A Ahmadi, M* Abbaspour,

Background & objectives: The urban rail transport network is always at risk due to its special conditions. Many cases indicate the existence of threatening and risk factors for human societies in urban rail transportation systems. Therefore, in this study, with the aim of identifying and prioritizing the risks of urban rail transportation networks in order to increase resilience is on the agend...

Journal: :Boletim do Observatório Ambiental Alberto Ribeiro Lamego 2021

This work aims to carry out a survey on municipal legislation and other legal management instruments, related the control mitigation of urban floods inundations in medium-sized municipalities state Rio de Janeiro. In this context, 22 range between 100 500 thousand inhabitants were surveyed. Among results obtained, it was found that only 13 had specific mitigate effects floods. Approximately 59%...

2002
J. I. López-Moreno J. M. García-Ruiz

The Yesa reservoir, the largest Pyrenean reservoir, was constructed in 1959 to supply water to new irrigated areas in the Ebro Depression, NE Spain. It is filled from October to May-June and then releases large quantities of water in the summer via the Bardenas Canal. The results confirm that the frequency of floods downstream of the dam decreased. The reduction mainly depends on two factors: i...

ژورنال: علوم آب و خاک 2014

The occurrence trend of floods in recent years shows that the most of Iran regions located in attacks of destructive floods and loss of life and property of flood damages is increasing. Watershed management practices (WMPs) are one of the superior and appropriate solutions for flood hazards mitigation. The impact of WMPs can be investigated using different approaches. In this study, the direct ...

2017
Brianne Smith Stephanie Rodriguez

New York City (NYC) is an ultra-urban region, with over 50% impervious cover and buried stream channels. Traditional flood studies rely on the presence of stream gages to detect flood stage and discharge, but these methods cannot be used in ultra-urban areas. Here we create a high-resolution radar rainfall dataset for NYC and utilize citizen and expert reports of flooding throughout the city to...

2012
Gustavo A. M. de Almeida Paul Bates Jim E. Freer Maxime Souvignet

[1] The ability of two-dimensional hydrodynamic models to accurately and efficiently predict the propagation of floods over large urban areas is of paramount importance for flood risk assessment and management. Paradoxically, it is in these highly relevant urban domains where flood modeling faces some of the most challenging obstacles. This is because of the very high-resolution topography that...

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