Hillslope deposits in gravel-bed rivers and their effects on the evolution of alluvial channel forms: A case study from the Sudetes and Carpathian Mountains

Owczarek, Piotr

doi:10.1016/j.geomorph.2007.02.028

Cited by 21 publications

(18 citation statements)

References 28 publications

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“…Wyżga, 1993;Kondolf, 1997;Škarpich et al, 2012). Similarly, Owczarek (2008) identified alluvial bars characterised by angular coarse material, which are strictly related to hill slope sediment delivery zones.…”

Section: Discussionmentioning

confidence: 88%

“…They also control sediment delivery into lowland channels with regard to its amount and nature (Chartrand, Whiting, 2000). This implies that the mountain streams function as an open system connecting hill slope and fluvial processes (Owczarek, 2008). Therefore, modern researchers discuss slope-channel coupling processes (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, modern researchers discuss slope-channel coupling processes (e.g. Walling, 1983;Fryirs, Brierley, 1999;Smith, Dragowich, 2008;Fuller, Marden, 2011), or hillslope sediment delivery zones (Owczarek, 2008). The system dynamics are affected by several factors, including climate, the frequency of high-magnitude events such as floods or debris-flows, and the internal dynamics of adjacent slopes (Chiverrell et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…bars) or size populations of particles (e.g. cobbles) in gravel-bed channels, while great attention was paid to sediment delivery zones (Hooke, 2003;Hradecký, Děd, 2008;Owczarek, 2008). Other studies deal with variations in median grain sizes of bed sediments (Surian, 2002;Brummer, Montgomery, 2003;Attal and Lavé, 2006;Vianello and D'Agostino, 2007;Škarpich et al, 2010), or changes in the lithology of bed sediments due to sediment supply coming out from the tributaries (Attal, Lavé, 2006).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Coarse Bed Sediments in a Headwater Channel as Indicators of Fluvial Processes and Slope-Channel Coupling: A Case Study from the Carpathian Mountains (Czech Republic)

Galia¹,

Škarpich²

2013

Moravian Geographical Reports

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Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coarse Bed Sediments in a Headwater Channel as Indicators of Fluvial Processes and Slope-Channel Coupling: A Case Study from the Carpathian Mountains (Czech Republic)

Galia¹,

Škarpich²

2013

Moravian Geographical Reports

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“…Processes of the first type are, for example, those related with reservoir silting (e.g., Chikita 1990, Lajczak 1996, De Cesare et al 2001, Elçi et al 2007; the on-site processes are, for example, those related with local morphology of slopes and water courses (e.g., Owczarek 2008). Based on the intent declared above, this manuscript focuses on processes of the second type.…”

Section: Introductionmentioning

confidence: 99%

On integrated sediment transport modelling for flash events in mountain environments

et al. 2011

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A b s t r a c tSediment production and transport in mountain basins during shortterm, intense events depend on a variety of processes. Available models typically consider a limited portion of the phenomenological chain, frequently either sediment supply or solid transport along the waterways. On the other hand, proper depiction of on-site processes requires ability to model all the process stages and suitable integration between different models. In this manuscript, an integrated modelling is attempted for small catchments in Italian Alpine foothills. The integrated approach has involved: (i) hydrologic estimation of peak discharge, (ii) evaluation of the volumetric sediment supply into the stream, and (iii) computation of the morphologic evolution of the river bed. The results are discussed focussing on: (i) the feasibility of a joint modelling like the one presented, in the light of all the limitations imposed by the different nature of hillslope-devoted and river-devoted models; and (ii) the sensitivity of the obtained results to some parameters, for an assessment of result reliability.

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Numerical simulation of the impact of sediment supply and streamflow variations on channel grain sizes and Chinook salmon habitat in mountain drainage networks

Neupane

Yager

2013

Earth Surf Processes Landf

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Climatically driven changes in streamflow and hillslope sediment supply could potentially alter stream surface grain size distribution patterns and thereby impact habitat for a number of threatened and endangered in-stream fish species. Relatively little is known about hydrograph (shape, peak flow) influence or the relative importance of chronic and episodic hillslope inputs on channel conditions. To better understand these external drivers, we calculated sediment routing through a gravel-bedded river network using a one-dimensional (1D) bedload transport model. We calculated changes in grain sizes and estimated Chinook salmon habitat suitability caused by a dry year and an extreme flood hydrograph, and chronic (diffusive, overland flow) or pulse (landslide, debris flow) hillslope sediment supplies. To obtain accurate channel conditions, a relatively high reference Shields stress, representative of steep mountain streams, was needed. An extreme event flood without any hillslope sediment inputs caused widespread bed coarsening and a decrease in aquatic habitat. Chronic sediment input combined with this hydrograph eliminated any changes in grain size and habitat, although when combined with a dry year flow, caused systematic bed fining. The influence of a given hydrograph therefore highly depends on the hillslope sediment supply. Regardless of the flow hydrograph or sediment pulse timing, grain size distribution or location, pulse sediment inputs did not cause widespread grain size changes despite being 100 times the total chronic input volume. Widespread and continuous hillslope sediment inputs may influence channel grain sizes and aquatic habitat more than a single discrete sediment pulse. Depending on the magnitudes of flow hydrograph and sediment supply alterations, climate change may induce no differences in grain sizes or very dramatic changes with significant consequences for longterm sustainability.

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Hillslope deposits in gravel-bed rivers and their effects on the evolution of alluvial channel forms: A case study from the Sudetes and Carpathian Mountains

Cited by 21 publications

References 28 publications

Coarse Bed Sediments in a Headwater Channel as Indicators of Fluvial Processes and Slope-Channel Coupling: A Case Study from the Carpathian Mountains (Czech Republic)

Coarse Bed Sediments in a Headwater Channel as Indicators of Fluvial Processes and Slope-Channel Coupling: A Case Study from the Carpathian Mountains (Czech Republic)

On integrated sediment transport modelling for flash events in mountain environments

Numerical simulation of the impact of sediment supply and streamflow variations on channel grain sizes and Chinook salmon habitat in mountain drainage networks

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