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Simplified two-dimensional numerical modelling of coastal flooding and example applications

作     者:Bates, Paul D.  Paul.Bates@Bristol.ac.uk Dawson, Richard J. Hall, Jim W. Horritt, Matthew S. Nicholls, Robert J. Wicks, Jon Mohamed Ahmed Ali Mohamed Hassan 

作者机构:School of Geographical Sciences University of Bristol University Road Bristol BS8 1SS United Kingdom School of Civil Engineering and Geosciences University of Newcastle upon Tyne Cassie Building Newcastle upon Tyne NE1 7RU United Kingdom School of Civil Engineering Environment and Tyndall Centre for Climate Change Research Southampton University Southampton S017 1BJ United Kingdom Halcrow Ltd. Burderup Park Swindon Wiltshire SN4 0QD United Kingdom HR Wallingford Ltd. Wallingford United Kingdom Department of Civil Engineering University of Bristol Queen's Building University Walk Bristol BS8 1TR United Kingdom 

出 版 物:《Coastal Engineering》 

年 卷 期:2005年第52卷第9期

页      面:793-810页

核心收录:

学科分类:0818[工学-交通运输类] 

基  金:Research presented in this paper has been funded through a number of projects and institutions. The Towyn study was undertaken as part of the "RASP: Risk assessment for flood and coastal defence systems for strategic planning" and was funded by the Environment Agency of England and Wales. Halcrow Group Ltd. funded the Fleetwood study. The East Anglia study was undertaken as part of the Tyndall Centre for Climate Change Research project (T2.6) "Regional assessment of coastal flood risk". The Thames estuary study was undertaken as part of the "Atlantis. North Atlantic Sea-Level Rise: Adaptation to Imaginable Worst Case Climate Change" project  funded by the European Commission FP5 (contract no. EVK2-CT-2002-00138). Data used in the case studies were provided by The Environment Agency  HR Wallingford and Wyre District Council. 

主  题:coastal flooding  2D numerical modelling  inundation  defence overtopping  sea level rise ANTARCTIC ICE-SHEET  RASTER-BASED MODEL  RISK-ASSESSMENT  INUNDATION  UNCERTAINTY  EQUIFINALITY  METHODOLOGY  ENVIRONMENT  PREDICTION  SYSTEMS 

摘      要:In this paper we outline the development and application of a simple two-dimensional hydraulic model for use in assessments of coastal flood risk. Such probabilistic assessments typically need evaluation of many thousands of model simulations and hence computationally efficient codes of the type described here are required. The code, LISFLOOD-FP, uses a storage cell approach discretized as a regular grid and calculates the flux between cells explicitly using analytical relationships derived from uniform flow theory. The resulting saving in computational cost allows fine spatial resolution simulations of regional scale flooding problems within minutes or a few hours on a standard desktop PC. The development of the code for coastal applications is described, followed by an evaluation of its performance against four test cases representing a variety of flooding problems at different scales. For three of these cases an observed flood extent is available to compare to model predictions. In each case the model is able to match the observed shoreline to within the error of the of the observed flow, topography and validation data and outperforms a non-model flood extent prediction made using a simple Geographical Information System (GIs) technique. (c) 2005 Elsevier B.V. All rights reserved.

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