Bedload transport as an indicator of contemporary transformations of arctic fluvial systems

Kociuba, Waldemar; Janicki, Grzegorz; Siwek, Krzysztof; Gluza, A.

doi:10.2495/deb120111

Cited by 8 publications

(10 citation statements)

References 27 publications

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“…and the lowest (1.9°C) on 4 Aug. (Kociuba et al . ). The meteorological station recorded 10 days with ≥0.1 mm rainfall and a precipitation total of only 11.9 mm, which is approximately the yearly average (Kociuba and Janicki ).…”

Section: Resultsmentioning

confidence: 97%

“…Occurrence of weather extremes within a very short time can significantly modify discharge conditions, as reflected in high variability of fluvial transport (Kociuba et al . , ; Kociuba and Janicki ).…”

Section: Methodsmentioning

confidence: 98%

“…The glacier-free part of the catchment is elevated up to 90 m a.s.l. with mean slope inclination of 2.3‰ (Kociuba et al 2012). Morphology of a 3.5 km section of the glacier-free valley bed includes two narrowings with a character of a gorge: the upper gorge, through the terminal moraine rampart, and the lower gorge, cutting through the elevated marine terrace.…”

Section: Study Sitementioning

confidence: 99%

“…The continuous measurement method with application of the River Bedload Trap ( RBT ) samplers anchored in the river channel, used for research on fluvial transport in cold climate conditions, permits solving the said issues (Kociuba et al . , ). A detailed analysis of the spatial and temporal variability of bedload flux in the conditions of relatively low discharges of the 2010 snowmelt season with full quantitative documentation was presented by Kociuba and Janicki ().…”

Section: Introductionmentioning

confidence: 99%

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Changeability of movable bed‐surface particles in natural, gravel‐bed channels and its relation to bedload grain size distribution (scott river, svalbard)

Kociuba

Janicki

2015

Geografiska Annaler: Series A, Physical Geography

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The presented paper analyses the variability of grain size distribution parameters of bedload transported by the gravel‐bed Scott River (Svalbard) draining a glacier catchment with an area of 10 km2. The grain size distribution analysis is one of the basic elements of identification of the fluvial transport mechanisms in gravel‐bed rivers. It is used for the determination of threshold values for bedload movement. It is also treated as an important indicator of the origin, routes of distribution, and conditions of transport and deposition of fluvial bedload. The field study in a natural proglacial gravel‐bed channel was carried out at two reaches in the mouth section of Scott River. The study revealed relatively high temporal variability and similar mean parameters of grain size distribution in conditions of low discharges. Bedload transport rates reached a mean of 71.9–76.0 kg d−1 in channel cross‐section. Bedload texture was dominated by gravels with a proportional contribution of the fine‐grained fraction along with very fine‐grained gravels (8‐2 mm) of 38.8%. The medium‐grained fraction (16‐8 mm) constituted 33.7%, with a lower contribution from the coarse‐grained fraction (32‐16 mm) of 23.2%, and the very coarse‐grained fraction (64‐32 mm) of 4.4%. Two periods in the course of bedload transport and distribution of grain size distribution parameters were distinguished based on variation of hydro‐meteorological conditions. The first half of the measurement period was distinguished by significantly higher values of daily loads and increased contribution of the coarse‐grained and very coarse‐grained fraction (28–31% and 6.2–6.6%, respectively). During this time, the river discharged up to 94% of bedload. This resulted in a clear tendency for riverbed scouring. The second half was distinguished by generally low daily bedload transport rates (<10 kg d−1), an increase in contribution of fine‐ and very fine‐grained gravels (42–55.6%), and a change in the tendency to aggradation. Grain size indices were more varied, and grains were usually finer and better sorted. Selective transport processes, often related to redeposition, were dominant in the channel. Along with an increase in flow velocity, conditions for material deposition became more variable. This was manifested in weaker sorting and an increase in grain diameter.

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Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 98%

Section: Study Sitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changeability of movable bed‐surface particles in natural, gravel‐bed channels and its relation to bedload grain size distribution (scott river, svalbard)

Kociuba

Janicki

2015

Geografiska Annaler: Series A, Physical Geography

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“…In contrast, measurements of bedload transport in glaciated catchments are limited to only several publications (Østrem 1975;Ashworth and Ferguson 1986;Pearce et al 2003;Bogen and Møen 2003;Kociuba et al 2010Kociuba et al , 2012Janicki 2014, 2015;Kociuba 2016a, b, in press). This situation is similar with regards to the study of general polar hydrology.…”

Section: Introductionmentioning

confidence: 99%

Bedload transport in two creeks at the ice-free area of the Baranowski Glacier, King George Island, West Antarctica

Sziło¹,

Bialik²

2017

Polish Polar Research

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This paper presents a unique case study and methodology for measurements of the bedload transport in the two, newly created troughs at the forefield of the Baranowski Glacier: Fosa and Siodło creeks. The weather conditions and the granulometric analysis are presented and discussed briefly. Rating curves for the Fosa and Siodło creeks are presented for the first time for this region. Changes of the bedload transport as well as water discharge and water velocity at both creeks are investigated. The hysteresis for the relationships between rate of bedload transport and water discharges were identified showing that for both creeks for the higher water levels a figure of eight loop may be easily recognized. Moreover, a new method for the calculation of bedload transport rate, based on the weighted arithmetic mean instead of the arithmetic mean, is proposed.

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Effective Method for Continuous Measurement of Bedload Transport Rates by Means of River Bedload Trap (RBT) in a Small Glacial High Arctic Gravel-Bed River

Kociuba

2016

Hydrodynamic and Mass Transport at Freshwater Aquatic Interfaces

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Bedload transport as an indicator of contemporary transformations of arctic fluvial systems

Cited by 8 publications

References 27 publications

Changeability of movable bed‐surface particles in natural, gravel‐bed channels and its relation to bedload grain size distribution (scott river, svalbard)

Changeability of movable bed‐surface particles in natural, gravel‐bed channels and its relation to bedload grain size distribution (scott river, svalbard)

Bedload transport in two creeks at the ice-free area of the Baranowski Glacier, King George Island, West Antarctica

Effective Method for Continuous Measurement of Bedload Transport Rates by Means of River Bedload Trap (RBT) in a Small Glacial High Arctic Gravel-Bed River

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