Search results for "Flood damage"
showing 3 items of 3 documents
Uncertainty in urban flood damage assessment due to urban drainage modelling and depth-damage curve estimation
2010
Due to the increased occurrence of flooding events in urban areas, many procedures for flood damage quantification have been defined in recent decades. The lack of large databases in most cases is overcome by combining the output of urban drainage models and damage curves linking flooding to expected damage. The application of advanced hydraulic models as diagnostic, design and decision-making support tools has become a standard practice in hydraulic research and application. Flooding damage functions are usually evaluated by a priori estimation of potential damage (based on the value of exposed goods) or by interpolating real damage data (recorded during historical flooding events). Hydrau…
NOVEL APPROACHES FOR FLOOD RISK ASSESSMENT USING EXPOSURE-VULNERABILITY MATRICES
L’approccio “classico” di difesa dall’inondazione, basato sulla costruzione di opere strutturali in grado di contenere piene di tempo di ritorno sempre maggiore, è stato sostituito da un approccio gestionale del rischio da inondazione, nel quale prende piede sempre più il concetto di “convivere” con la piena accettando un certo livello di inondazione. In quest’ottica, la vulnerabilità diventa la variabile chiave nell’equazione del rischio e gli interventi non strutturali lo strumento principale per mitigarlo: nonostante si creda nella loro efficacia, i metodi per stimarla sono pochi, così come scarsi sono i dati sui loro effetti. Il 22 Novembre 20112, un evento meteorico eccezionale ha colp…
The Effect of Damage Functions on Urban Flood Damage Appraisal
2014
Flooding damage appraisal can been obtained by interpolating real damage data caused by historical flooding events or accounting the effects of a flood in terms of the depreciation of assets. Most often, the expected damage is evaluated by means of damage functions describing the relationship occurring between the damage and hydraulic characteristics of flood. The present paper aims to evaluate the uncertainty linked to the choice of the depth-damage function adopted in the flood damage analysis. Several possible depth-damage function formulations were selected in literature and applied to historical flooding events monitored in the "Centro Storico" catchment in Palermo (Italy). (C) 2013 Th…