Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution geographic data

Ernst, Julien; Dewals, Benjamin; Detrembleur, Sylvain; Archambeau, Pierre; Erpicum, Sébastien; Pirotton, Michel

doi:10.1007/s11069-010-9520-y

Cited by 126 publications

(107 citation statements)

References 28 publications

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“…Ernst et al (2010) assessed high-resolution economic damage (2 m × 2 m) along two sections of the river Ourthe, a tributary of the Meuse in Belgium. Wind et al (1999) reported observed (direct) damage in Dutch Limburg for the flood events of 1993 and 1995 of about C149 million (1993) and C91 million (1995) 1 (in year 2000 euros).…”

Section: Past Research On Flood Risk In the Meuse Basinmentioning

confidence: 99%

Potential of semi-structural and non-structural adaptation strategies to reduce future flood risk: case study for the Meuse

Poussin

Bubeck

Aerts

et al. 2012

Nat. Hazards Earth Syst. Sci.

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Abstract. Flood risk throughout Europe has increased in the last few decades, and is projected to increase further owing to continued development in flood-prone areas and climate change. In recent years, studies have shown that adequate undertaking of semi-structural and non-structural measures can considerably decrease the costs of floods for households. However, there is little insight into how such measures can decrease the risk beyond the local level, now and in the future. To gain such insights, a modelling framework using the Damagescanner model with land-use and inundation maps for 2000 and 2030 was developed and applied to the Meuse river basin, in the region of Limburg, in the southeast of the Netherlands. The research suggests that annual flood risk may increase by up to 185 % by 2030 compared with 2000, as a result of combined land-use and climate changes. The independent contributions of climate change and land-use change to the simulated increase are 108 % and 37 %, respectively. The risk-reduction capacity of the implementation of spatial zoning measures, which are meant to limit and regulate developments in flood-prone areas, is between 25 % and 45 %. Mitigation factors applied to assess the potential impact of three mitigation strategies (dry-proofing, wet-proofing, and the combination of dry-and wet-proofing) in residential areas show that these strategies have a risk-reduction capacity of between 21 % and 40 %, depending on their rate of implementation. Combining spatial zoning and mitigation measures could reduce the total increase in risk by up to 60 %. Policy implications of these results are discussed. They focus on the undertaking of effective mitigation measures, and possible ways to increase their implementation by households.

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Section: Past Research On Flood Risk In the Meuse Basinmentioning

confidence: 99%

Potential of semi-structural and non-structural adaptation strategies to reduce future flood risk: case study for the Meuse

Poussin

Bubeck

Aerts

et al. 2012

Nat. Hazards Earth Syst. Sci.

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show abstract

“…Developed countries, where anthropic settlements determined extensive urbanization processes, have to deal with an existing building stock located in hazard prone areas which is not always «hazards proofed» and is ageing: such built assets require the implementation of mitigation and protection measures against natural threads that are continuously evolving due to the current global climate change. Several references provide lists of parameters to be considered in the evaluation of vulnerability (Federal Emergency Management Agency, 2007) (Van Westen et al 2008) and fine grain analysis on buildings vulnerability are not new in the scientific panorama (Sucuoğlu et al, 2007) (Ernst et al, 2010) (Stephenson et al, 2014).…”

Section: Use Casesmentioning

confidence: 99%

Knowledge for Intelligence: Discussing the State and the Role of Building Data in Italy

Pasquinelli

Guzzetti

2016

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The availability of integrated information on buildings is the premise for an effective assets management and the provision of innovative services to buildings users: such form of knowledge relies on the efficient exploitation of existing data, providing a complete overview on the state of buildings, and on the acquisition of real-time data flows, coming from sensor and mobile devices, reporting users behaviours. If, on the one hand, technology is progressively enabling the management of new huge streams of data, on the other hand the interconnection among traditional and well rooted datasets, the majority of which in charge of public administrations, is not always guaranteed. While, at European level, interoperability issues among public archives concerning buildings were properly addressed, and the relevance of geo-information is widely recognized, in Italy this process is still taking time to be undertaken. This paper discuss the current state of Building Information in Italy, outlining a possible path for the creation of a georeferenced Building Information System at municipal level, starting from the informative heritage available in existing databases, generated with different purposes and maintained by independent authorities: the idea is to solicit that digitalization process, started a decade ago with the "Digital Administration Code", through the proposition of real use cases that might be implemented once that public data on buildings are profitably combined together.

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“…The time step is adaptive and computed based on the Courant-Friedrichs-Lewy (CFL) stability criterion, with a CFL number equal to 0.5. It takes values of the order of 10 -3 -10 -2 s. This finite volume model has already proven its validity and efficiency for the analysis of natural and artificial floods (Ernst et al, 2010;Erpicum et al, 2010a;Dewals et al, 2011), as well as numerous other applications including complex turbulent flows (Dewals et al, 2008;Erpicum et al, 2009;Roger et al, 2009;Dufresne et al, 2011).…”

Section: Numerical Modelmentioning

confidence: 99%

Can the collapse of a fly ash heap develop into an air-fluidized flow? — Reanalysis of the Jupille accident (1961)

et al. 2015

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A fly ash heap collapse occurred in Jupille (Liege, Belgium) in 1961. The subsequent flow of fly ash reached a surprisingly long runout and had catastrophic consequences. Its unprecedented degree of fluidization attracted scientific attention. As drillings and direct observations revealed no water-saturated zone at the base of the deposits, scientists assumed an air-fluidization mechanism, which appeared consistent with the properties of the material. In this paper, the air-fluidization assumption is tested based on two-dimensional numerical simulations. The numerical model has been developed so as to focus on the most prominent processes governing the flow, with parameters constrained by their physical interpretation. Results are compared to accurate field observations and are presented for different stages in the model enhancement, so as to provide a base for a discussion of the relative influence of pore pressure dissipation and pore pressure generation. These results show that the apparently high diffusion coefficient that characterizes the dissipation of air pore pressures is in fact sufficiently low for an important degree of fluidization to be maintained during a flow of hundreds of meters.

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Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution geographic data

Cited by 126 publications

References 28 publications

Potential of semi-structural and non-structural adaptation strategies to reduce future flood risk: case study for the Meuse

Potential of semi-structural and non-structural adaptation strategies to reduce future flood risk: case study for the Meuse

Knowledge for Intelligence: Discussing the State and the Role of Building Data in Italy

Can the collapse of a fly ash heap develop into an air-fluidized flow? — Reanalysis of the Jupille accident (1961)

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