Articles | Volume 14, issue 11
https://doi.org/10.5194/nhess-14-3031-2014
https://doi.org/10.5194/nhess-14-3031-2014
Research article
 | 
19 Nov 2014
Research article |  | 19 Nov 2014

50-year return-period wet-snow load estimation based on weather station data for overhead line design in France

H. Ducloux and B. E. Nygaard

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Cited articles

Admirat, P., Sakamoto, Y., and De Goncourt, B.: Calibration of a snow accumulation model based on actual cases in Japan and France, Proc. 4th International Workshop on Atmospheric Icing of Structures, 5–7 September 1988, Paris, France, 1988.
Barthazy, E. and Schefold, R.: Fall velocity of snowflakes of different riming degree and crystal types, Atmos. Res., 82, 391–398, 2006.
Böhm, H. P.: A general equation for the terminal fall speed of solid hydrometeors, J. Atmos. Sci., 46, 2419–2427, 1989.
Deneau, V. and Guillot, P.: Wet-snow accretion on power lines: cartographic examination of risks throughout France, La Houille Blanche, 6, 465–474, 1984.
Elíasson, A. J., Thorsteins, E., and Ólafsson, H.: Study of wet-snow events on the south coast of Iceland, Proc. 9th International Workshop on Atmospheric Icing of Structures, 5–8 June 2000, Chester, England, 2000.
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Short summary
Historically, as far as wet-snow loads were concerned, overhead line design was often based on experience. This article proposes a practical method to estimate the 90% confidence intervals of characteristic wet-snow loads based on meteorological data recorded at weather stations. As there is only one value of the ice-class masses proposed by ISO 12494 in each confidence interval, characteristic loads can be easily expressed in terms of ISO ice classes.
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