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The effect urbanization volume and rates of surface run-off (source: Drainage Manual, Roads and The effect urbanization volume and rates of surface run-off (source: Drainage Manual, Roads and Transportation Association of Canada 1982). Transportation Association of Canada 1982).
Source publication
Urban floods have large impacts particularly in terms of economic and social losses. Flood risk is commonly thought of as being a combination of the probability and the consequences of flooding. To analyse flooding requires a basic understanding of the hydrology of cities. The paper provides an overview of the consequences of urbanisation on the hy...
Contexts in source publication
Context 1
... time of concentration and the surface run-off of the rainwater on the urban areas, while due to the decreasing infi ltration the surface run-off of the rainwater on the urban areas, while due to the decreasing infi ltration the accumulated water quantity is increasing the accumulated water quantity is increasing (CSAPÁK CSAPÁK 2009) (see also on Fig. ...
Similar publications
Flood assessment in urban catchments is usually addressed through the combination of Geographic Information Systems (GIS) and stormwater models. However, the coupled use of these tools involves a level of detail in terms of hydrological modelling which can be beyond the scope of overall flood management planning strategies. This research consists o...
Citations
... With the development of global urbanization, the variation of urban hydrological processes has become increasingly prominent, and the mechanism of urban water cycle has undergone profound changes, resulting in increasing water risks and water environmental problems, such as frequently happened storm, shortage of water resources and deterioration of water quality (Mrekva et al., 2012;Wang et al., 2014;Sang and Yang, 2017). These disasters have caused huge economic losses and threaten the safety of infrastructure and human lives (Yang et al., 2021). ...
While urbanization’s strong effect on local precipitation has been widely documented, knowledge of how urbanization affects isotopic composition in precipitation is still lacking. In the present study, deuterium-excess (d-excess) served to quantify the contribution of recycled vapor to precipitation in Chengdu city (China) and a nearby rural area. Precipitation from the urban and rural areas showed no significant difference in δ¹⁸O values (p > 0.05). The rural area had significantly higher d-excess (24.29 ± 7.39‰) than the urban (12.71 ± 4.88‰) through the seasons due to higher evapotranspiration flux in the rural area. In summer, however, urban precipitation amount was higher than that of the rural area. Based on d-excess model, the average ratio of recycled vapor was 8.2% in Chengdu, which was lower than in the rural area (36.1%). This highlights the effect of urbanization in decreasing the proportion of vapor from local evapotranspiration contributing to precipitation but blocked much advected moisture. This also implied that precipitation taken in cities were used to represent upwind advected vapor or used as referenced isotopic records for paleoclimate reconstruction based on tree rings or stalagmites sampled in rural area may be erroneous as the effect of urbanization on precipitation vapor. Further studies are needed to explore the effect of urbanization on vapor source of precipitation under different climatic zones.
