Urban inundation response to rainstorm patterns with a coupled hydrodynamic model: A case study in Haidian Island, China

Chen, Wenjie; Huang, Guoru; Zhang, Han; Wang, Weiqi

doi:10.1016/j.jhydrol.2018.07.069

Cited by 118 publications

(60 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to the empirical Kraven formula [9], the flood concentration time for SB1 is 2 h, 1.6 h for SB2, and 2.7 h for SB3. Since there is no large reservoir or dam in the runoff areas, the flood concentration time suggests that a 2 h maximum rainfall amount in SB1 and SB2, and a 3 h maximum rainfall amount in SB3 will produce a flood peak in the risk assessment area.…”

Section: Identification Of Critical Rainfall Durations and Rainfall Dmentioning

confidence: 99%

Assessing Spatial Flood Risk from Multiple Flood Sources in a Small River Basin: A Method Based on Multivariate Design Rainfall

Jiang

Yang

Tatano

2019

Water

View full text Add to dashboard Cite

A key issue in assessing the spatial distribution of flood risk is considering risk information derived from multiple flood sources (river flooding, drainage inundation, etc.) that may affect the risk assessment area. This study proposes a method for assessing spatial flood risk that includes flooding and inundation in small-basin areas through multivariate design rainfall. The concept of critical rainfall duration, determined by the time of concentration of flooding, is used to represent the characteristics of flooding from different sources. A copula method is adopted to capture the correlation of rainfall amounts in different critical rainfall durations to reflect the correlation of potential flooding from multiple flood sources. Rainfalls for different return periods are designed based on the copula multivariate analysis. Using the design rainfalls as input, flood risk is assessed following the rainfall–runoff–inundation–loss estimation procedure. A case study of the Otsu River Basin, Osaka Prefecture, Japan, was conducted to demonstrate the feasibility and advantages of this method. Compared to conventional rainfall design, this method considers the response characteristics of multiple flood sources, and solves the problem of flood risk assessment from multiple flood sources. It can be applied to generate a precise flood risk assessment to support integrated flood risk management.

show abstract

Section: Identification Of Critical Rainfall Durations and Rainfall Dmentioning

confidence: 99%

Assessing Spatial Flood Risk from Multiple Flood Sources in a Small River Basin: A Method Based on Multivariate Design Rainfall

Jiang

Yang

Tatano

2019

Water

View full text Add to dashboard Cite

show abstract

“…Os problemas com alagamentos, inundações e enxurradas são frequentes em todo o mundo, e como mencionado, está presente em pelo menos 80% das cidades brasileiras. Nas últimas décadas estes eventos ganharam maior atenção pública e investimentos em infraestrutura, concentrado, principalmente, nas grandes cidades (MARCELINO, 2007;CHEN, et al 2018). Na bacia do Rio Iguaçu os problemas causados são notórios e alarmantes, se mostraram presente em pelo menos 90% dos municípios.…”

Section: Figura 1 -Localização Da áRea De Estudo E Das Estações Pluviunclassified

“…Suas incidências em espaços ocupados e habitados pelo homem causam sérios danos, muitas vezes irreparáveis. Esses eventos podem se intensificar com os cenários de mudanças climáticas e serem ainda mais danosos em conjunto às constantes mudanças no uso e ocupação do solo sem planejamento (MARCELINO, 2007;HAMMOND et al, 2015TANAKA et al 2017CHEN et al 2018;JAMALI et al 2018).…”

Section: Introductionunclassified

Ocorrências De Alagamentos, Enxurradas E Inundações E a Variabilidade Pluviométrica Na Bacia Hidrográfica Do Rio Iguaçu

Caldana

Yada

Moura

et al. 2018

ABClima

View full text Add to dashboard Cite

As condições de tempo e clima são essenciais para a agricultura e o desenvolvimento da sociedade, entretanto, sua dinamicidade pouco compreendida pode comprometer algumas atividades humanas. Estudos a respeito da variabilidade da precipitação são fundamentais para o planejamento e tomada de decisão para atividades agrícolas e atividades urbanas. A Região Metropolitana de Curitiba (RMC) possui um grande contingente populacional com grande vulnerabilidade a eventos climáticos extremos, além disso, o médio e baixo Iguaçu são importantes áreas agrícolas do estado, sendo necessários estudos que auxiliem para o planejamento na região. Dessa forma, objetivou-se analisar a variabilidade pluviométrica mensal, sazonal e anual e a distribuição das ocorrências de alagamentos, enxurradas e inundações na bacia hidrográfica do Rio Iguaçu. O recorte temporal utilizado para a análise climática foi de 1977 a 2017. Utilizou-se dados de 78 estações meteorológicas ou pluviométricas distribuídas na área da bacia, além de dados por município de ocorrência de alagamentos, enxurradas ou inundações. Para a análise da precipitação utilizou-se mapa de isoietas e a estatística do box plot e para espacialização das ocorrências dos desastres foram criados mapas temáticos. Identificou-se grande variabilidade regional, anual, sazonal e mensal da precipitação na bacia. Ocorreram 861 casos de alagamentos, enxurradas ou inundações com 872 mil pessoas afetadas em 18 anos de análise.

show abstract

“…Research and practice in the last decades has shown that urbanization has an adverse impact on the urban hydrological processes, such as the expansion of impervious areas accelerating runoff flow velocity and enlarging peak flow and runoff volume, resulting in increased risk of urban flood and water-logging [20]. In order to mitigate urban water-logging and flood disasters and reduce the flood losses, a large number of researchers have explored the quantitative impacts of urbanization on urban hydrological processes under extreme precipitation using the combination of field observations and hydrodynamic and hydrological models [21][22][23][24][25][26][27]. In addition, urban flooding risk assessment methods were developed based on various risk assessment theories [28]; e.g., the risk matrix method [29].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the studies of urban flooding have mainly focused on the floods occurring in metropolitan regions. In these regions, it was demonstrated that the dominant cause of urban flood disasters is water-logging induced by impeded drainage systems and extreme rainfall [21][22][23][24][25][26][27][28]. However, flood disasters occurring in small mountainous cities are significantly different from those of large cities [30].…”

Section: Introductionmentioning

confidence: 99%

The Influence of River Channel Occupation on Urban Inundation and Sedimentation Induced by Floodwater in Mountainous Areas: A Case Study in the Loess Plateau, China

et al. 2019

View full text Add to dashboard Cite

River channel occupation has made cities in the mountainous areas more vulnerable to floodwater out of river channels during rapid global urbanization. A better understanding of the influence of river channel occupation on urban flood disasters can serve as a reference in planning effective urban flood control strategies. In this study, taking a flood event that occurred on July 26th, 2017 in a city on the Loess Plateau as an example, field surveys, dynamics detection of the river channel using remote sensing technology, and scenario simulations with a two-dimensional flow and sediment model were utilized to quantitatively analyze the impacts of river channel occupation on urban inundation and sedimentation. The results show that river channel dynamics reduced by construction can be successfully detected using the combination of high-resolution images and Landsat time-series images. The variation of the water level–discharge relationship caused by the narrowing of the river channel and the increase of the flood-water level caused by water-blocking bridges/houses result in a significant reduction of the flood discharge capacity. The contribution of the narrowing of the river channel was 72.3% for the total area inundated by floodwater, whereas 57.2% of urban sedimentation was caused by the construction of bridges/houses within the river channel. Sustainable flood mitigation measures were also recommended according to the investigations and research findings in this study in order to reduce the social, environmental and economic damages caused by floods.

show abstract

Urban inundation response to rainstorm patterns with a coupled hydrodynamic model: A case study in Haidian Island, China

Cited by 118 publications

References 34 publications

Assessing Spatial Flood Risk from Multiple Flood Sources in a Small River Basin: A Method Based on Multivariate Design Rainfall

Assessing Spatial Flood Risk from Multiple Flood Sources in a Small River Basin: A Method Based on Multivariate Design Rainfall

Ocorrências De Alagamentos, Enxurradas E Inundações E a Variabilidade Pluviométrica Na Bacia Hidrográfica Do Rio Iguaçu

The Influence of River Channel Occupation on Urban Inundation and Sedimentation Induced by Floodwater in Mountainous Areas: A Case Study in the Loess Plateau, China

Contact Info

Product

Resources

About