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Theoretical and experimental study of morphodynamics mountain rivers in flooding

Type of activity
Competitive project
Acronym
MORFLOOD
Funding entity
MIN DE ECONOMIA Y COMPETITIVIDAD
Funding entity code
CGL2015-71291-P
Amount
67.518,00 €
Start date
2016-01-01
End date
2019-05-31
Keywords
Flujo alta montaña, Montainous river flow, flujo cuasi crítico, quasi-critical flow, resistencia al flujo, roughness, sediment transport, transporte sedimentos
Abstract
Flash floods in mountainous areas produce a great impact on society. The high flow energy, the mobilized material and the velocity
involved in those streams make the aforementioned events extremely dangerous. The necessity of facing the risk assessment due to flood
is motivated by the European Floods Directive that requires local authorities to complete risk management plans. The lack of knowledge
we actually have in fluvial morpho-dynamics is wide, as testified by the event of July 2013 in Vall dAran (Northeast of Spain). This project
aims to open a new investigation topic to study the fluvial morpho-dynamic of mountain streams. Often, the most popular studies in
streams deal with rivers, but in mountain creeks a lack of literature is detected. It is remarked that this study concerns fluvial morphodynamics
and not simply fluvial dynamics. The difference is that, besides the bedload, it has the morphological changes of the stream
have to be considered. This is the key point of the approach: introducing the evaluation of the changes in width and the bed-forms during
the flood. It seems that the mountain stream flow depends on the critical flow, the one able to transport the maximum flow with the
minimum specific energy. Every change in the streams occurred due to the dominant flow provokes stream deformations or sediment
transport, changing the roughness to maintain the stage of the so-called quasi-critical flow. This is the main point of the research line of
this project: reaching the limit of the incipient movement of bed particles and working on the associated critical stresses.
Scope
Adm. Estat
Plan
Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016
Call year
2016
Funcding program
Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia
Funding subprogram
Subprograma Estatal de Generación de Conocimiento
Funding call
Excelencia: Proyectos I+D
Grant institution
Gobierno De España. Ministerio De Economía Y Competitividad, Mineco

Participants