Articles | Volume 17, issue 5
https://doi.org/10.5194/nhess-17-765-2017
https://doi.org/10.5194/nhess-17-765-2017
Research article
 | 
29 May 2017
Research article |  | 29 May 2017

Costs of sea dikes – regressions and uncertainty estimates

Stephan Lenk, Diego Rybski, Oliver Heidrich, Richard J. Dawson, and Jürgen P. Kropp

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Cited articles

Aerts, J. C. J. H., Botzen, W. J. W., Moel, H. d., and Bowman, M.: Cost estimates for flood resilience and protection strategies in New York City, Ann. NY Acad. Sci., 1294, 1–104, https://doi.org/10.1111/nyas.12200, 2013.
Akaike, H.: A new look at the statistical model identification, IEEE T. Automat. Contr., AC–19, 716–723, https://doi.org/10.1109/TAC.1974.1100705, 1974.
Arcadis and Fugro: Kostenfuncties Dijkringgebieden 7, 14, en 29, Report, Ministry of Transport, Public Works and Water Management, Amersfoort, Netherlands, in Dutch, 2006.
BCIS: Elemental Standard Form of Cost Analysis, Royal Instituttion of Chartered Surveyors, London, 4th Edn., available at: http://www.rics.org/Global/BCIS_Elemental_Standard_Form_of_Cost_Analysis_4th__NRM__Edition_2012.pdf (last access: 7 May 2017), 2012.
Boettle, M., Rybski, D., and Kropp, J. P.: How changing sea level extremes and protection measures alter coastal flood damages, Water Resour. Res., 49, 1199–1210, https://doi.org/10.1002/wrcr.20108, 2013a.
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We plot the dike costs divided by their length as a function of height and test four different regression models. Our analysis shows that a linear function without intercept is sufficient to model the costs, i.e. fixed costs and higher-order contributions are less significant. We employ log-normal distributions and calculate that the range between 3x and x/3 contains 95% of the data, where x represents the regression value. We compare estimates from Canada, the Netherlands, US, UK, and Vietnam.
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