Use of Systematic, Palaeoflood and Historical Data for the Improvement of Flood Risk Estimation. Review of Scientific Methods

Gerardo Benito, Michel Lang, Mariano Barriendos, M. Llasat, Felix Francés, Taha Ouarda, Varyl Thorndycraft, Yehouda Enzel, Andras Bardossy, Denis Coeur and Bernard Bobée

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2004, vol. 31, issue 3, 623-643

Abstract: The catastrophic floods recently occurring in Europe warn of the critical need forhydrologic data on floods over long-time scales. Palaeoflood techniques provideinformation on hydrologic variability and extreme floods over long-time intervals(100 to 10,000 yr) and may be used in combination with historical flood data (last1,000 yr) and the gauge record (last 30–50 yr). In this paper, advantages anduncertainties related to the reconstruction of palaeofloods in different geomorphologicalsettings and historical floods using different documentary sources are described.Systematic and non-systematic data can be combined in the flood frequency analysisusing different methods for the adjustment of distribution functions. Technical toolsintegrating multidisciplinary approaches (geologic, historical, hydraulic and statistical)on extreme flood risk assessment are discussed. A discussion on the potential theoreticalbases for solving the problem of dealing with non-systematic and non-stationary data ispresented. This methodology is being developed using new methodological approachesapplied to European countries as a part of a European Commission funded project (SPHERE). Copyright Kluwer Academic Publishers 2004

Keywords: Palaeofloods; historical floods; hydrometeorological hazards; flood frequency analysis; Europe (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1023/B:NHAZ.0000024895.48463.eb

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