Monitoring of avulsion channel evolution and river morphology changes using UAV photogrammetry: Case study of the gravel bed Ondava River in Outer Western Carpathians

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F19%3A43894181" target="_blank" >RIV/44555601:13520/19:43894181 - isvavai.cz</a>

Result on the web

<a href="https://rgs-ibg.onlinelibrary.wiley.com/doi/full/10.1111/area.12508" target="_blank" >https://rgs-ibg.onlinelibrary.wiley.com/doi/full/10.1111/area.12508</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/area.12508" target="_blank" >10.1111/area.12508</a>

Result language

angličtina

Original language name

Monitoring of avulsion channel evolution and river morphology changes using UAV photogrammetry: Case study of the gravel bed Ondava River in Outer Western Carpathians

Original language description

This paper presents results from monitoring the chute cutoff in the meander bend of the Ondava River in Eastern Slovakia. An avulsion channel was formed in the central part of the meander neck during 2010 flood events, and here we describe the mechanism of evolution and post-cutoff avulsion channel adjustment using drones, unmanned aerial vehicle (UAV) photogrammetry and field survey. Monitoring by UAV images began on 15 June 2012 with 78 processed images, followed by 259 images during April 2014 and 375 from 18 July 2014. The majority of UAV digital elevation model (DEM) errors in the study area were associated with vegetation cover, with the average vertical root mean square error (RMSE) of the UAV-DEM on bare ground at 0.209 m compared with 0.673 m in vegetated areas. The chute cutoff was formed by floodplain headcutting during meander neck overflow and headcut migration was directed by floodplain sediment structure and land use. Although low river discharge after the 2010 floods stabilised the avulsion channel by vegetation succession, recurrent two-yearly interval flooding increased the avulsion channel bank erosion from 36.9 m3/month (June 2012-April 2014) to 425.6 m3/month (April 2014-July 2014). The information, practices and views in this article are those of the author(s) and do not necessarily reflect the opinion of the Royal Geographical Society (with IBG). (C) 2018 Royal Geographical Society (with the Institute of British Geographers).

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10508 - Physical geography

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Area

ISSN

0004-0894

e-ISSN

—

Volume of the periodical

51

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

549-560

UT code for WoS article

000478676900019

EID of the result in the Scopus database

—