Anna Kidova

Slovak Academy of Sciences | SAV · Department of Physical Geography, Geomorphology and Natural Hazards

Changes in the morphological pattern of the gravel-bed Belá River, Slovak Carpathians, were investigated to infer about the impact of flood events and environmental changes on the evolutionary trend of the river since the mid-twentieth century. The post-flood period serial geomorphic analysis (POPSEGA) approach coupled with GIS analysis was used to...

River meander dynamics and mobility are important indicators of environmental change related to climate changes and anthropogenic activities at local and river basin scales. The aim of the present study is to identify morphological changes of the Karoon River in Iran using high accuracy maps and Landsat satellite images by analyses during the time...

The bank erosion area, rate of bank retreat and overall geomorphological and financial effects of channel migration due to recent flood events (over the time span 1987–2009) are identified using remotely sensed data and GIS. A 39 km-long reach of the meandering, gravel bed Topľa River (Flysch Slovak Carpathians) was selected as the study area. Base...

Channel incision is an evident trend for river evolution in many European rivers and notably the Western Carpathians, whose former braided and multichannel wandering river system is transforming into a single‐thread channel, but it is often difficult to separate drivers and determine if incision is finished or is still ongoing. To overpass these re...

Riparian zones are the paragon of transitional ecosystems, providing critical habitat and ecosystem services that are especially threatened by global change. Following consultation with experts, 10 key challenges were identified to be addressed for riparian vegetation science and management improvement: (1) Create a distinct scientific community by...

In the 19th century, the Hornád River in Slovakia was an unmanaged river system with well-developed free meanders. However, there has been a significant reduction of these free meanders in the last 70 years. The aim of this paper was to evaluate the morphological response to human intervention and flood events on three types of river segments (natu...

Riparian zones are dynamic ecosystems that form at the interface between the aquatic and terrestrial components of a landscape. They are shaped by complex interactions between the biophysical components of river systems, including hydrology, geomorphology, and vegetation. Remote sensing technology is a powerful tool useful for understanding riparia...

The Belá River represents a reference braided-wandering river system to observe natural, or semi-natural, forms and processes in the mountain environment. In this chapter, human impact and spatio-temporal bio-morphological evolution of the Belá River from the second half of the twentieth century are described. For the high-energy Belá River, new gr...

The central part of Ondavská vrchovina upland represents a medium-altitude and moderately dissected relief with narrow elongated valleys. The Topľa and Ondava rivers are the main axis of flysch valleys and their flat bottoms are modelled by dynamic river processes acting upon thin layers of Quaternary sediments. They bear a record of all historical...

The organic horizon of forest soil (OHFS) under deciduous forest is formed on the surface of the forest soil and is composed of a varied dead plant and animal material. This material gradually decomposes into recognizable layers of OHFS: litter, duff-1 and duff-2. Different soil water retention (SWR) can be expected from different layers of the OHF...

The paper evaluates the impact of river training works designed to address problems associated with flooding on the braided-wandering Belá River in Slovakian Carpathians. This impact was investigated after the flood event in July 2018 on 11 river reaches where the river engineering and management intervention was applied. We analyzed its impact by...

The dynamic geomorphological phenomena such as riverbank erosion require accurate and frequent mapping. In this study, we present a methodology for the assessment of volumetric changes in the river banks represented by high-resolution digital terrain models derived from 12 periodic terrestrial laser scanning surveys over the 3-year period. The meth...

This study presents evolution monitoring of the chute cutoff in the meander bend of the Ondava River in Eastern Slovakia. An avulsion channel was formed in the central part of meander neck during 2010 flood events, and the consequent morphological changes were examined by close range aerial imaging. Initial monitoring commenced on June 15th 2012 wi...

The changes in river morphology result from several factors such as climate, human interventions, lithology or land use and land cover changes. This paper shows morphological changes of two different river systems (braided-wandering of Belá and sinuous gravel bed of Ondava) over the last 60 years as a response to changes of land use, flood events d...

Mountain stream gravel is very often legally and illegally mined and gravel is removed from river beds sometimes on the very large scale which is disastrous for fluvial situation of rivers, for river ecology and river engineering works done for flood protection such as river revetments, bridges and all hydraulic structures. This situation makes a b...

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 (...

The aim of this paper is to present the possibilities of UAVs (Unmanned Aerial Vehicles) as photogrammetry payload carriers for data acquisition and fluvial landform identification and mapping. The manual and automatic classification of the Belá River riparian zone for landscape object identification and the analyses of the point cloud density afte...

The article presents the postflood period coarse sediment connectivity (CSC) assessment approach on the basis of the holistic ideas of the interpretation of the long-term CSC in river channels. Seven sets of remote sensing data (1949–2009) were used as the basic information sources to study the CSC along the braided-wandering Belá River by using th...

This paper presents the template for high-resolution mapping of a river landscape by Unmanned Aerial Vehicle (UAV) technology with the following five steps: (i) reconnaissance of the mapped site; (ii) pre-flight field work; (iii) flight mission; (iv) quality check and processing of aerial data; and (v) operations above the processed layers and land...

The paper aims to the identification of the recent channel planform evolution of the braided-wandering Belá River using multitemporal data analyses of channel parameters in GIS (river active zone width, channel number, island number and mid-channel bar number) within consecutive 100-m-long channel segments (227 in total) for seven time horizons (19...

Main aim of the paper was inundation 2D modelling of gravel-bed and lateral dynamic Topľa River in flysch Western Carpathians. Results points to 473.20 ha of flooded area during flood event from 2010 with recurrence interval 100 years. Average water depth on floodplain in the river channel was 0.7 m and 2.8 m. Extent of the inundation during one-ye...

The natural capacity for morphological adjustments of the high-energy braided rivers in laterally-unconfined settings have significant natural capacity for adjustment in both vertical and lateral dimensions. Thalweg shifting induces recurrent reworking of bedload in these dynamic systems. The Belá River situated in the north of Slovakia has been an...

Throughout the Europe, reductions in the extent of braided river reaches have occurred since the end of the 19th century and throughout the 20th century. This is a particular study priority of present braided rivers, because they are unique natural entities and rich ecosystems. Understanding the temporal and spatial connectivity that has char-acter...

The paper aspires to be a comprehensive morphological study of the braided and wandering Belá River. Based on analysis of maps and remote sensing data from nine time horizons (1823, 1938, 1949, 1961, 1973, 1986, 1992, 2003 and 2009) a database of parameters corresponding to fluvial forms was compiled. Selection of years 1949, 1961, 1973, 1986, 1992...

Recent morphological evolution of braided-wandering river. Anna Kidová Geografický ústav SAV, Štefánikova 49, 814 73 Bratislava geogkido@savba.sk Key words: indices, node density, channel changes, vegetation patches, braided-wandering river, the River Bela We analysed the evolution of channel patterns and morphological changes of the braided-wan...

The aim of the study is to analyse land cover changes in the riparian zone of not forested landscape based on comparison of its spatial structure in two different economic and/ or political time horizons (1987 and 2003) and to interpret the trend of development on three hierarchical level: the national level (all Slovak streams), the level of a seg...

The present time is characterized by impacts of climate change on natural landscapes as well as on human activities. Increasing magnitude and frequency of flood events results in morphological and morphodynamic changes of river channels. It is a challenge for the fluvial geomorphology to highlight the morphological response to these events, because...

Research of braided rivers in fluvial geomorphology, particularly the partial themes of interaction between the channel morphology, water flow-stage, sediment transport, bar evolution and vegetation in braided rivers are frequent in specialised literature. These issues can be successfully investigated by a suitable selection of methods for the comp...

The paper deals with the braided-wandering type of channel organization. The river reach of the River Belá (1, 7 km long) situated in the north of Slovakia has been analysed in order to comprehend its evolutionary trend. Historical maps and aerial photos (1837-2009, nine time horizons) with comparable discharge conditions have been used for the pat...

This contribution tries to describe evolution of antropogenetic influence on river channel morphology on the example of the Belá River in the Liptovská kotlina Basin. As far as land cover variability is concerned the study area comprises floodway controlled by flood barrage, remnants of the older riverine landscape and modern land cover structures....