DOI: 10.1007/s11069-020-04181-8
论文题名: Urban flooding in Britain: an approach to comparing ancient and contemporary flood exposure
作者: O’Shea T.E. ; Lewin J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 104, 期: 1 起始页码: 581
结束页码: 591
语种: 英语
中文关键词: Evolution of risk
; Flood inundation
; Hazard perception
; Historical vulnerability
; Roman settlements
英文关键词: catchment
; flooding
; floodplain
; hazard assessment
; hydrograph
; perception
; return period
; river channel
; vulnerability
; wetland
; United Kingdom
英文摘要: Using modified UK Environment Agency Flood Estimation Handbook techniques, inundation extent and likely flood hydrographs for 0.1% probability annual return periods are compared for twelve Roman town sites in the UK, both at the present day and for simulated Roman catchment conditions. Eight of the study sites appear to have suffered minimal urban flood liability as occupied in the Roman period. The exceptions were Canterbury, York, Leicester, and Chichester. It is reasonable to expect flood characteristics to have changed subsequently in response to transformations in catchment land use, urban expansion, wetland reclamation, and floodway engineering. However, modelling results suggest limited differences in flood flows attributable to such factors. Greater present-day urban damage liability essentially results from floodplain urban extension. There are also contrasts between sites: those Roman towns lying on floodplains themselves, rather than on slightly elevated terraces (Canterbury, Chichester), are dominated by groundwater regimes with attenuated flood peaks. Taken together, these results suggest some Roman awareness of the actualities of urban flood liability at the time. Site sensitivity has not been carried forward as urban expansion has flourished, especially from the nineteenth century with suburban and industrial expansion. The straightforward mapping approach here suggested should in future take account of multiple century-scale hydroclimatic changes, morphological river channel and floodplain transformations over similar time periods, and on-going improvements to inundation modelling. © 2020, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168654
Appears in Collections: 气候变化与战略
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作者单位: School of Geographical Sciences, University of Bristol, Bristol, United Kingdom; Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, United Kingdom
Recommended Citation:
O’Shea T.E.,Lewin J.. Urban flooding in Britain: an approach to comparing ancient and contemporary flood exposure[J]. Natural Hazards,2020-01-01,104(1)