Stochastic Parameters of Flash Floods Formation in the North of the Black Sea Coast

Author:

Kuksina L. V.1,Beljakova P. A.2,Golosov V. N.1,Zhdanova E. Ju.1,Ivanov M. M.1,Gurinov A. L.3

Affiliation:

1. Lomonosov Moscow State University (MSU)

2. Water Problems Institute of the Russian Academy of Sciences (WPI RAS)

3. Institute of Geography, Russian Academy of Sciences (IGRAS)

Abstract

Abstract—Flash floods are one of the most dangerous hydrometeorological events all over the World. In the current paper stochastic parameters of flash floods formation are studied on the basis of data on flash floods in 1990–2021 in the small river basins of the Caucasus and Crimea Black Sea Coast. The main factor of flash floods formation is heavy rain, but in some cases its occurrence could depend on critical combination of various factors. Flash floods are usually formed in summer-autumn period in the studied region with the maximum of observed events in August. They are characterised by very rapid water level rise of about 1.2–1.3 m/h. Sediment yield during one flash flood could be compared with mean annual values. Statistical analysis of precipitation long ranges demonstrates probability of more often flash floods occurrence in the region in comparison with observed events.

Publisher

The Russian Academy of Sciences

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