J 2018

Response of channel dynamics to recent meander neck cut-off in a lowland meandering river with artificial training history: the Morava River, Czech Republic

ONDRUCH, Jakub, Zdeněk MÁČKA, Monika ŠULC MICHALKOVÁ, René PUTIŠKA, Martin KNOT et. al.

Basic information

Original name

Response of channel dynamics to recent meander neck cut-off in a lowland meandering river with artificial training history: the Morava River, Czech Republic

Authors

ONDRUCH, Jakub (203 Czech Republic, guarantor, belonging to the institution), Zdeněk MÁČKA (203 Czech Republic, belonging to the institution), Monika ŠULC MICHALKOVÁ (703 Slovakia, belonging to the institution), René PUTIŠKA (703 Slovakia), Martin KNOT (203 Czech Republic), Petr HOLÍK (203 Czech Republic, belonging to the institution), Jakub MIŘIJOVSKÝ and Marián JENČO

Edition

Hydrological Sciences Journal, Taylor & Francis, 2018, 0262-6667

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10508 Physical geography

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.180

RIV identification code

RIV/00216224:14310/18:00103224

Organization unit

Faculty of Science

UT WoS

000442624000009

Keywords in English

neck cut-off; meander; Morava River; oxbow; sedimentation
Změněno: 23/4/2024 11:23, Mgr. Michal Petr

Abstract

V originále

One-decade-long observations of post-cut-off channel development and oxbow lake formation are presented to offer insight into the morphological response of the Morava River to neck cutoff. The main objectives were: calculation of the amount of sediment released to the channel by collapse of the meander neck, comparison of floodplain erosion and deposition rates before and after cut-off, and description of the rate and pattern of oxbow lake sedimentation. The amount of sediment released due to cut-off (35 000 m3) equalled 2 - 5 years of sediment input by lateral erosion averaged for the past six decades. Bank erosion rates substantially exceeded long-term averages (0.63 - 6.21 m year -1, post cut-off). Despite a low entrance angle, alluvial plugs in a newly formed oxbow lake were established within a few months. Between 2006 and 2016, sedimentation of the alluvial plugs proceeded at an average rate of 0.55 m year -1, reflecting the time since cut-off and the frequency of overbank flows.