Historical and recent floods in the West Sudetes, Central Europe – the geomorphological dimension

Kasprzak, Marek; Migo, Piotr

doi:10.1127/zfg_suppl/2015/s-59216

Cited by 10 publications

(4 citation statements)

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“…The lowest flow and water level occur during autumn (September, October) and winter (February). The summer floods of the river may be short-term and rapid after storms or last longer as a result of prolonged regional scattered rainfall [29]. During these floods, increased bed load transport occurs, including large particles, such as cobbles (64-256 mm) or boulders (diameter over 256 mm).…”

Section: Terrestrial Laser Scanningmentioning

confidence: 99%

Terrestrial Laser Scanning for the Detection of Coarse Grain Size Movement in a Mountain Riverbed

Walicka

Jóźków

Kasprzak

et al. 2019

Water

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Fluvial transport is a natural process that shapes riverbeds and the surrounding terrain surface, particularly in mountainous areas. Since the traditional techniques used for fluvial transport investigation provide only limited information about the bed load transport, recently, laser scanning technology has been increasingly incorporated into research to investigate this issue in depth. In this study, a terrestrial laser scanning technique was used to investigate the transport of individual boulders. The measurements were carried out annually from 2011 to 2016 on the Łomniczka River, which is a medium-sized mountain stream. The main goal of this research was to detect and determine displacements of the biggest particles in the mountain riverbed. The methodology was divided into two steps. First, the change zones were detected using two strategies. The first strategy was based on differential digital elevation model (DEM) creation and the second involved the calculation of differences between point clouds instead of DEMs. The experiments show that the second strategy was more efficient. In the second step, the displacements of the boulders were determined based on the detected areas of change. Using the proposed methodology, displacements for individual stones in each year were determined. Most of the changes took place in 2012-2014, which correlates well with the hydrological observations. During the six-year period, movements of individual particles with diameters less than 0.8 m were observed. Maximal displacements in the observed period reached 3 m. Therefore, it is possible to determine both vertical and horizontal displacement in the riverbed using multitemporal TLS.

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Section: Terrestrial Laser Scanningmentioning

confidence: 99%

Terrestrial Laser Scanning for the Detection of Coarse Grain Size Movement in a Mountain Riverbed

Walicka

Jóźków

Kasprzak

et al. 2019

Water

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“…Flood simulation and forecasting of large rivers in China have been widely studied (Chau, Wu, & Li, ; Dawson, Harpham, Wilby, & Chen, ; Jianyun, ; Lin et al, ; Markar, Clark, Yaowu, & Jing, ; Plate, ; Wang, Yang, & Guo, ; Yang, Li, Ni, & Hu, ). However, flood simulation and forecasting for medium and small watersheds face more challenges due to the complexity of rainfall‐runoff processes caused by rainfall of high intensity and short duration (He et al, ; Kasprzak & Migo, ; Ma et al, ). Floods in medium and small watersheds are often characterised by fast rising and recession, which makes flood forecasting difficult.…”

Section: Introductionmentioning

confidence: 99%

Applicability assessment of the CASCade Two Dimensional SEDiment (CASC2D‐SED) distributed hydrological model for flood forecasting across four typical medium and small watersheds in China

Lei

Zhang

et al. 2019

J Flood Risk Management

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Hydrological modelling is a critical tool for preventing and mitigating severe flood disasters. This study aims to assess the applicability of a physically based distributed hydrological model, CASCade Two Dimensional SEDiment (CASC2D‐SED), for flood forecasting in four typical medium and small watersheds across three hydroclimatic zones (semi‐arid, semihumid, and humid) in China. CASC2D‐SED model has the best performance in Xianbeigou (semi‐arid), followed by Luanchuan (semihumid), and Shujia (humid), while has the relatively lowest performance in Chengcun (humid). It tends to underestimate a large portion of the discharges in the watersheds, indicating that the Green‐Ampt infiltration‐excess model, the only runoff generation scheme in CASC2D‐SED model, imposes restrictions on hydrological simulation without further accounting for subsurface and groundwater flows. This limitation is particularly obvious in the semihumid and humid regions. Our analysis suggests that combining infiltration‐excess and saturation‐excess runoff generation mechanisms and accounting for subsurface and groundwater flows in CASC2D‐SED will further enhance its capacity for flood forecasting and hydrological simulation for semihumid and humid hydroclimatic zones.

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“…Scarce geochronological data and proxy soil data suggest mid-Holocene landslide activity in the Kamienne Mountains but it is not known whether they signify birth or reactivation (Kacprzak et al, 2013). Even the status of the Little Ice Age is uncertain and whereas there are indicators that floods may have occurred with greater frequency (Kasprzak and Migoń, 2015), the behaviour of slopes remains an enigma.…”

Section: Implications For the Present-day Geomorphic Systemsmentioning

confidence: 99%

“…The focus is on hillslope processes (mass movements, erosion, windthrow), leaving aside floods, extensively treated elsewhere (e.g. Kasprzak and Migoń, 2015). Second, their spatial and temporal context will be discussed, followed by considerations of their significance for the contemporary and Holocene geomorphic system of the Sudetes.…”

Section: Introductionmentioning

confidence: 99%

Extreme geomorphic events in the contemporary evolution of forested slopes in a Central European mountain range, the Sudetes

Migoń¹

2017

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Forested slopes of the Sudetes have long been implicitly considered as stable under contemporary environmental conditions, with little geomorphic change throughout the Holocene. This view is difficult to sustain and this review-type paper brings together evidence that infrequent but potent surface processes locally cause significant remodelling of slopes and regolith removal or redistribution. These processes are debris flows, shallow and deepseated landslides, episodes of efficient linear water erosion and windthrows. All are triggered by exceptional meteorological events such as heavy rain or strong wind, but additional factors of slope steepness and suitable lithology play a role. Scarce database does not permit to firmly establish recurrence intervals of such events but they seem to occur at least once per decade (within the entire mountain range) for rain-induced phenomena and two-three times per century for wind-induced phenomena.

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Historical and recent floods in the West Sudetes, Central Europe – the geomorphological dimension

Cited by 10 publications

References 0 publications

Terrestrial Laser Scanning for the Detection of Coarse Grain Size Movement in a Mountain Riverbed

Terrestrial Laser Scanning for the Detection of Coarse Grain Size Movement in a Mountain Riverbed

Applicability assessment of the CASCade Two Dimensional SEDiment (CASC2D‐SED) distributed hydrological model for flood forecasting across four typical medium and small watersheds in China

Extreme geomorphic events in the contemporary evolution of forested slopes in a Central European mountain range, the Sudetes

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