Continuous monitoring of bedload flux in a mountain gravel-bed river

García, Carmen; Laronne, Jonathan B.; Sala, María

doi:10.1016/s0169-555x(99)00128-2

Cited by 84 publications

(61 citation statements)

References 16 publications

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“…) is much higher than most published data for perennial rivers with maximum values of erosion rarely higher than 1 kg s -1 m -1 (Laronne and Reid, 1993;García et al, 2000;Habersack et al, 2001;Mao et al, 2010;Vericat and Batalla, 2010).…”

Section: Spatiotemporal Variations In Bedload Fluxmentioning

confidence: 63%

“…Several devices for continuous direct measurement of bedload transport have been used . The most widespread and accurate method for continuous bedload monitoring is the Reid-type recording slot sampler, successfully used in permanent and ephemeral gravel-bed rivers worldwide (e.g., García et al, 2000;Laronne et al, 2003;Vericat and Batalla, 2010). It has also been employed in gravel (Laronne and Reid, 1993), gravelly-sand (at the Jornada Experimental Range, see Laronne et al, 2003), sandy (Lucía et al, 2013) as well as in clayey-gravel ephemeral channels (Liébault et al, 2016).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Morpho-textural implications to bedload flux and texture in the sand-gravel ephemeral Poveda Gully

et al. 2018

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Section: Spatiotemporal Variations In Bedload Fluxmentioning

confidence: 63%

Section: Accepted Manuscriptmentioning

confidence: 99%

Morpho-textural implications to bedload flux and texture in the sand-gravel ephemeral Poveda Gully

et al. 2018

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“…The resulting wide range of transport rates provides steep rating curves with high exponents. The range of particle sizes collected in a sampler does not appear to affect the rating curve steepness in these streams: samplers in Table 3 that collected gravel only [65,3,4,66,67,68,69] have similarly steep bedload rating curves as those samplers that also collect sand and fine gravel [70,71]. If rating curve steepness is unaffected by truncation of the lower end of the sampled size distribution, then fractional rating curves (except for perhaps the largest one or two size classes) must be parallel to each other.…”

Section: Bedload Transport Rating Curves From Bedload Trapsmentioning

confidence: 97%

A Comparison of Coarse Bedload Transport Measured with Bedload Traps and Helley-Smith Samplers

et al. 2008

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Gravel bedload transport rates were measured at eight study sites in coarse-bedded Rocky Mountain streams using 4-6 bedload traps deployed across the stream width and a 76 by 76 mm opening Helley Smith sampler. Transport rates obtained from bedload traps increased steeply with flow which resulted in steep and well-defined transport rating curves with exponents of 8 to 16. Gravel transport rates measured by the HelleySmith sampler started with much higher transport rates during low flows and increased less steeply, thus fitted bedload rating curves were less steep with exponents of 2 to 4. Transport rates measured with both samplers approached similar results near or above bankfull flow, but at 50 % of bankfull, transport rates from the bedload traps were 2-4 orders of magnitude lower than those obtained from the Helley-Smith sampler. The maximum bedload particle sizes also differed between the two samplers. They were smaller in the bedload traps than the Helley-Smith sampler at low flows, while at higher flows bedload traps collected larger particles than the Helley-Smith sampler. Differences in sampler opening size and sampling time contribute to the measured differences, but the biggest effect is likely attributable to the bedload traps being mounted on ground plates thus avoiding direct contact between the sampler and the bed and preventing involuntary particle pick up.

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“…Difficult terrain and climatic conditions, high variability of bedload transport, and problems with estimation of measurement efficiency make it difficult to apply modern, direct, and continuous monitoring methods such as: luminescent, magnetic, radio-emitter, radioisotope, or acoustic method [e.g. 9, [16][17][18][19][20][21][22][23][24][25][26][27]. Due to the short term and spot character of measurement, application of Helley-Smith samplers can also result in low representativeness and limited measurement efficiency, particularly in the case of medium-and coarse-grained fractions [22,28,29].…”

Section: Introductionmentioning

confidence: 99%

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

Kociuba¹,

Janicki²,

Siwek³

et al. 2012

Monitoring, Stimulation, Prevention and Remediation of Dense and Debris Flows IV

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The article presents results of measurements of bedload transport rate, performed during the ablation season 2010 in the gravel-bed Scott River catchment (Svalbard). The study revealed temporal and spatial variability of bedload transport rate. It varied from 0. , and the mean value at individual sites varied from 0.004 to 0.16 g m −1 s −1 for a 24-hour interval. In the period analysed, the river discharged a total of approx. 1834 kg of bedload, with mean daily bedload transport rate (Q b ) of approx. 63 kg day -1 . The volume and rate of bedload transport were dependent on hydrodynamic conditions and stream regime, directly related to weather. Also the effect of Scott Glacier retreat on discharge rate was emphasised, along with the indicative character of bedload transport rate. It responds to changes in the tempo and magnitude of processes in a glacial catchment quite rapidly, and therefore can be treated as a good indicator of transformations occurring in the arctic zone.

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Continuous monitoring of bedload flux in a mountain gravel-bed river

Cited by 84 publications

References 16 publications

Morpho-textural implications to bedload flux and texture in the sand-gravel ephemeral Poveda Gully

Morpho-textural implications to bedload flux and texture in the sand-gravel ephemeral Poveda Gully

A Comparison of Coarse Bedload Transport Measured with Bedload Traps and Helley-Smith Samplers

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

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