Historical, hydraulic, hydrological and meteorological reconstruction of 1874 Santa Tecla flash floods in Catalonia (NE Iberian Peninsula)

JOURNAL OF HYDROLOGY

卷:524

Article

Lluis Ruiz-Bellet, Josep¹  Caries Balasch, Josep¹  Tuset, Jordi^2,3  Barriendos, Mariano⁴  Mazon, Jordi⁵  Pino, David^5,6 

[1] Univ Lleida, Dept Environm & Soil Sci, Lleida, Spain

[2] Forest Sci Ctr Catalonia, Solsona, Spain

[3] Univ Lleida, Fluvial Dynam Res Grp RIUS, Lleida, Spain

[4] Univ Barcelona, Dept Modern Hist, Barcelona, Spain

[5] Univ Politecn Catalunya BarcelonaTech, Dept Appl Phys, Castelldefels, Spain

[6] Inst Space Studies Catalonia IEEC UPC, Barcelona, Spain

关键词: Historical flash floods;    Multidisciplinary reconstruction;    Peak flow;    Rainfall;    20th Century Reanalysis;    Uncertainty;   

DOI  :  10.1016/j.jhydrol.2015.02.023

来源: Elsevier

【 摘 要 】

A multidisciplinary methodology for historical floods reconstruction was applied to 1874 Santa Tecla floods occurred in Catalonia (NE Iberian Peninsula), using both historical information and meteorological data from 20th Century Reanalysis. The results confirmed the exceptionality of the event: the highest modeled specific peak flow was around 14.6 m(3) s(-1) km(-2) in a 100 km(2) catchment and all the modeled total rainfall values were above 110 mm in about six hours, with maximum intensities around 60 mm min(-1). The peak-flows peak flows' return periods were about 260 years and the rainfalls periods were between 250 and 500 years. The meteorological cause of the rainstorms was the flash triggering effect, initiated by the withdrawal of a mass of hot air at mid-levels. A sensitivity analysis on the various sources of error shows that peak flow errors from hydraulic modeling ranged from 5% to 44%, and rainfall errors from hydrological modeling were about 36%. (C) 2015 Elsevier B.V. All rights reserved.

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