A Real-time Dynamic Simulation Scheme for Large-Scale Flood Hazard Using 3D Real World Data
KeywordFlood hazard modelling
Digital terrain modelling
Flooding region growth
Flood Region Spreading Algorithm
MetadataShow full item record
AbstractWe propose a new dynamic simulation scheme for large-scale flood hazard modelling and prevention. The approach consists of a number of core parts: Digital terrain modelling with GIS data, Nona-tree space partitions (NTSP), Automatic River object recognition and registration, and a flood spreading model. The digital terrain modelling method allows the creation of a geometric real terrain model for augmented 3D environments with very large GIS data, and it can also use information gathered from aviation and satellite images with a ROAM algorithm. A spatial image segmentation scheme is described for river and flood identification and for a 3D terrain map of flooding region growth and visualisation. The region merging is then implemented by adopting Flood Region Spreading Algorithm (FRSA). Compared with the conventional methods, our approach has the advantages of being capable of realistically visualising the flooding in geometrically-real 3D environments, of handling dynamic flood behaviour in real-time and of dealing with very large-scale data modelling and visualisation.
VersionNo full-text available in the repository
CitationWang, C., Wan, T.R. and Palmer, I.J. (2007). A Real-time Dynamic Simulation Scheme for Large-Scale Flood Hazard Using 3D Real World Data. in: Proceedings of the 11th International Conference on Information Visualization Vol. IV, pp.607-612. Washington: IEEE Computer Society.
Link to publisher’s versionhttp://www2.computer.org/portal/web/csdl/doi/10.1109/IV.2007.15
Showing items related by title, author, creator and subject.
‘Gifts for the gods’: lake-dwellers' macabre remedies against floods in the Central European Bronze AgeMenotti, Francesco; Jennings, Benjamin R.; Gollnisch-Moos, H. (2014-06)The lake-dwellings of the Circum-Alpine region have long been a rich source of detailed information about daily life in Bronze Age Europe, but their location made them vulnerable to changes in climate and lake level. At several Late Bronze Age examples, skulls of children were found at the edge of the lake settlement, close to the encircling palisade. Several of the children had suffered violent deaths, through blows to the head from axes or blunt instruments. They do not appear to have been human sacrifices, but the skulls may nonetheless have been offerings to the gods by communities faced with the threat of environmental change.
Numerical modelling of natural flood management and its associated microbial risks in the United KingdomPu, Jaan H. (2018-05-08)This paper reviews and discusses the recent studies of natural flood management (NFM) and its associated microbial risks in the UK and suggests set of numerical modelling approaches for their respective investigation. This study details the importance of precise numerical representation of the NFM to flood inundations and microbial risks caused by NFM measures. Possible future numerical advancements of the numerical modelling for the NFM and microbial activities are also discussed here.
Correlation between flood frequency and geomorphologic complexity of river network -A case study of Hangzhou ChinaGuo, Yakun; Zhang, S.; Wang, Z.; (2015-08)Urban 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.