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dc.contributor.authorGuo, Yakun*
dc.contributor.authorZhang, S.*
dc.contributor.authorWang, Z.*
dc.date.accessioned2016-02-18T12:13:47Z
dc.date.available2016-02-18T12:13:47Z
dc.date.issued2015-08
dc.identifier.citationZhang S, Guo Y & Wang Z (2015) Correlation between flood frequency and geomorphologic complexity of river network -A case study of Hangzhou China. Journal of Hydrology, 527: 113-118.en_US
dc.identifier.urihttp://hdl.handle.net/10454/7790
dc.descriptionyesen_US
dc.description.abstractUrban flooding is a combined product of the climate and watershed geomorphology. River system is one of the vital components of watershed geomorphology. The geomorphic characteristics of rivers have important effect on the formation of flooding. However, there have been few attempts so far to investigate the relationship between flooding frequency, the probability of flooding, and the geomorphological complexity of river system. Such relationship is essential in order to predict likely responses of flooding frequency to the large-scale changes in the complexity of the river networks induced by accelerating urbanization around river. In this study we investigate the correlation between geomorphological characteristics of river system and the probability of flooding. Hangzhou city in China, which has suffered severe flooding, is chosen as a case study to evaluate this correlation and to investigate the impact of changes of drainage networks morphology on the local flooding. The fractal dimension, which is used to quantitatively assess geomorphological complexity of river network, is calculated by using box-counting method based on fractal geometry for eight sub river networks in Hangzhou. A model based on the correlation of flooding frequency and fractal dimension is established. The model is applied to investigate the effect of the rapid urbanization induced changes of river geomorphology on the local flood frequency in two typical regions in Hangzhou. The results show that the flood frequency/events increases with the decrease of fractal dimension of the river network, indicating that the geomorphologic complexity of river network has an important effect on flooding. This research has great referential value for future flood quantitative investigation and provides new method for urban flood control and river system protection.en_US
dc.description.sponsorshipKey Scientific and Technical Project of Water Conservancy of Zhejiang Province (Grant No: RB1401)en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://doi.org/10.1016/j.jhydrol.2015.04.060en_US
dc.rights© 2015 Elsevier. Reproduced in accordance with the publisher's self-archiving policy.en_US
dc.subjectRiver networks, Floods frequency, Urban flood control, Geomorphological complexity, Correlation model, Hangzhou, Chinaen_US
dc.titleCorrelation between flood frequency and geomorphologic complexity of river network -A case study of Hangzhou Chinaen_US
dc.status.refereedYesen_US
dc.date.Accepted2015-04
Test.contributor.author
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2016-08-30T00:00:00Z


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