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(Article of periodic en Anglais - 2014)

Document title

Inquiry of levee formation by grain size analysis — A case study from the Warta River (central Poland)

Authors(s) and Affiliation(s)

SKOLASIŃSKA K. (1) ;
(1) Inst. of Geology, Adam Mickiewicz Univ., Poznán, POLOGNE

Abstract

Levees were the most easily recognised depositional forms developed after 2 subsequent floods that occurred in summer 2010 and winter 2010/2011 in the Warta River valley. The aim of this study was to investigate changes in the grain size of the sands deposited during one flood episode. Analyses indicated slight differences in the grain-size of the deposits. However, a detailed grain-size analysis of sand samples showed that a single flood event was represented by a coarsening-upward sequence. Differences in flow energy, observed mainly within the channel banks, resulted in mixing sediment transported in saltation with sediment transported in graded suspension. The paper proposes a model sequence for levee deposition during flood event, directly related to the flood progress. A single flood (particularly the rising phase) is represented by a pensymmetric sequence. However the uppermost part of the sequence is sometimes lacking in the fossil record which results in an upward coarsening sequence

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, no122 [pp. 103-110]

Bibliographic references : 1 p.

Collation : 7 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.06.014

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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