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Flash floods: formation, study and distributionстатья
- Авторы: Kuksina Liudmila, Golosov Valentin
- Журнал: E3S Web of Conferences
- Том: 163
- Год издания: 2020
- Издательство: EDP Sciences
- Местоположение издательства: France
- DOI: 10.1051/e3sconf/202016302005
- Аннотация: Flash floods are one of the most widespread and dangerous phenomenon on our planet. They are characterized by fast speed of development and short duration. However, their study just begins because there is no one opinion what flash flood is, and there is no special term in many countries. The key reasons of their formation are intensive rainfall of short duration, location of river basin in mountain areas, and smallcatchment area, providing fast concentration of the runoff in river channel.Another significant factor is antecedent soil moisture. Flash floods are mostly spread in zones of subtropic, tropic and equatorial climate in thenorthern hemisphere. The study of flash floods is implemented in various fields of science due to hydrometeorological and lythogeomorphologicalcauses of their formation. The important task is the differentiation of flash floods and debris flows. It can be based on the relations between sediment yield and sediments grain size and runoff characteristics with a glance ofsediments concentration. The scheme of natural factors of flash floods formation is suggested with their differentiation from debris flows andfloods of other types. The main issues of flash floods research and forecast are connected with small spatio-temporal scale of phenomenon andremoteness of river basins.
- Добавил в систему: Кобыльченко (Куксина) Людмила Вячеславовна