Landscapes and Landforms of the Czech Republic

0458575 - GFÚ 2017 RIV CH eng M - Monography Chapter
Máčka, Z. - Kadlec, Jaroslav
Strážnické Pomoraví - Holocene evolution of a unique floodplain and Aeolian landforms.
Landscapes and Landforms of the Czech Republic. Cham: Springer, 2016 - (Pánek, T.; Hradecký, J.), s. 361-371. ISBN 978-3-319-27536-9
Institutional support: RVO:67985530
Keywords : The Morava River * sedimentary archive * floods
Subject RIV: DB - Geology ; Mineralogy

The Morava River drainage basin is the largest fluvial system of the eastern part of the Czech Republic. The Morava enters the Dolnomoravský úval Basin (northern tip of the Vienna Basin) at its lower course, where a 3,5 km wide floodplain is developed. The most interesting section of floodplain may be found between the towns Veselí nad Moravou and Hodonín, where Pleistocene and Holocene sediments of the Morava River are accompanied by the unique complex of lacustrine sediments remodelled by the wind action to the shape of up to 10 m high sand dunes. The Morava river was branching into many large as well as small arms in its floodplain, creating an anastomosed channel pattern. Diverse mosaic of aquatic and (semi)terrestrial habitats were present as it is displayed on old maps of the floodplain. The majority of small anastomosed channels vanished due to the river regulation works started in the nineteenth century and most of the river flow was concentrated into one dominant channel. This channel was affected by substantial deepening, widening and lateral migration in the second half of the twentieth century triggered by river regulation in 1930s. The aerial extent of floodplain inundation was reduced to approximately one-fourth of its original extent due to the construction of flood defence dykes. The Strážnické Pomoraví region is on of last remaining examples of a lowland meandering river with more or less preserved natural dynamics of fluvial processes in the Czech Republic.
Permanent Link: http://hdl.handle.net/11104/0258829