Scientific and methodological base for calculation of rain and spring floods maximum runoff
| Autor: | E. Gopchenko, M. Burlutskaya, M. Romanchuk |
|---|---|
| Jazyk: | English<br />Russian<br />Ukrainian |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Український гідрометеорологічний журнал, Iss 20, Pp 85-90 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2311-0902 2616-7271 |
| DOI: | 10.31481/uhmj.20.2017.10 |
| Popis: | For more than 40 years estimated characteristics of rivers' maximum runoff for rain and spring floods in Ukraine have been determined using the regulatory document SNiP 2.01.14-83. This regulatory document is based on use of reduction formulas (for spring floods, rain floods with catchment areas of F >200 km2) and maximum intensity formulas (for rain floods with catchment areas of F < 200 km2). Use of reduction structure for rain and spring floods of different reduction have no relevant grounds since in both cases we deal with calculation of maximum water discharge forming the part of unimodular hydrographs. In addition, a calculated parameter of "friendliness" k0 is determined for spring floods by use of hydrological analogues, which, by the way, are assigned rather provisionally. Regarding rain floods the impact in the form of coefficients of analogy is replaced by the runoff module q200 taken for a provisional catchment area F = 200 km2. In methodological terms, in contrast to the "friendliness" coefficient of the spring flood k0 determined by the method of hydrological analogy, module q200 (for rain floods) is represented by a map of isolines. More remarks can be voiced with regard to the methodological base of determination of maximum modules of rain floods runoff within small catchment areas (F |
| Databáze: | Directory of Open Access Journals |
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