How did the suspended sediment load change in the North Caucasus during the Anthropocene?

Tsyplenkov, Anatoly; Golosov, Valentin; Belyakova, P. A.

doi:10.1002/hyp.14403

Cited by 7 publications

(5 citation statements)

References 101 publications

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“…Des Walling's paper on recent trends in the suspended sediment loads of the world's rivers, published with Don Fang in Global and Planetary Change in 2003, is one of his most highly cited publications and emphasized that sediment fluxes in rivers are sensitive to a panoply of natural and human factors which may be responsible for increases or decreases through time. This theme is taken up in this Special Issue by Tsyplenkov et al (2021) who investigated suspended sediment loads at 33 gauging stations in the Terek River catchment in the Northern Caucasus, Russia for the period from 1925 to 2018. Loads were found to have declined at most gauging stations at an average rate of −1.17% per year, but the downward trend was not linear nor continuous and in detail varied with catchment altitude, area, and fraction of cropland.…”

Section: Themesmentioning

confidence: 99%

Understanding sediment in river systems—Building on a 50‐year contribution

Webb

Foster

McNamara

2023

Hydrological Processes

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Walling wrote his first papers about suspended sediment in Devon river catchments as a young hydrologist more than 50 years ago in the early 1970s. In those days, some very senior scientists told him he was wasting his time, because soil erosion in Britain was not a problem, and British rivers were not muddy! A half a century, and more than 500 publications (the majority of which are devoted to fine sediment in river catchments) later, Des is regarded as one of the world's leading hydrologists who have focused on erosion and sediment yields and catchment sediment budgets. His prolific, distinguished and frequently highly-cited research contributions have been recognized by important awards including the IAHS/UNESCO/ WMO International Hydrology Prize, the American Geophysical Union Hydrologic Sciences Award, the Norman Hudson Memorial Award of the World Association of Soil and Water Conservation, the Chien Ning International Prize of the World Association for Sedimentation and Erosion Research and the Victoria Medal of the Royal Geographical Society. Des has advocated eloquently and powerfully that sediment studies have an important role within the discipline of hydrology, not only because of the implications for environmental protection and sustainable development, but also because fine sediment represents a key pathway for material transport at all scales ranging from the individual farmer's field to the global earth system. In order to underpin his work, Des established an intensive programme of field investigations through a network of long-term measuring sites in the local Exe basin, which operated for over 30 years. He also developed complementary high quality laboratory facilities in the Geography Department at the University of Exeter for studying sediment properties, including one of the best-equipped gamma spectrometry laboratories in the world. However, he was also keen to extend the canvas on which he worked beyond the local to the national and the international. Such activity has seen him conducting soil loss studies across several areas of Britain and investigating the delivery of sediment through larger river systems including the River Severn and the Yorkshire Ouse. He has also carried out much work overseas in North, East and Southern Africa,

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Section: Themesmentioning

confidence: 99%

Understanding sediment in river systems—Building on a 50‐year contribution

Webb

Foster

McNamara

2023

Hydrological Processes

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“…Many works carried out in different world regions are devoted to SSY's study, and some contain data on Caucasus Region [15,19,[46][47][48][49]. This study used a database recently created by Tsyplenkov et al [12] updated with gauging stations (GS) for the Terek basin from Tsyplenkov et al [11]. The overview of the database is reported in Figures 1 and 2.…”

Section: The Sediment Yield Datamentioning

confidence: 99%

“…The Caucasus is also essential for developing medical and health resorts, hydropower energy, industrial production, mining, and transport infrastructure. Erosion intensity in various altitudinal zones of the Caucasus and their changes over time can reflect the climate change and anthropogenic impact fluctuations, including recent decades [10,11]. The increasing recurrence of events associated with the formation of extreme floods and powerful destructive debris flows requires detailed quantitative assessments of the characteristics of the sediment yields (SSY, t km −2 year −1 ) in various altitudinal belts.…”

Section: Introductionmentioning

confidence: 99%

Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region

Golosov

Tsyplenkov

2021

Water

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This paper discusses the joint impact of catchment complexity in topography, tectonics, climate, landuse patterns, and lithology on the suspended sediment yield (SSY, t km−2 year−1) in the Caucasus region using measurements from 244 gauging stations (GS). A Partial Least Square Regression (PLSR) was used to reveal the relationships between SSY and explanatory variables. Despite possible significant uncertainties on the SSY values, analysis of this database indicates clear spatial patterns of SSY in the Caucasus. Most catchments in the Lesser Caucasia and Ciscaucasia are characterized by relatively low SSY values (<100–150 t km−2 year−1), the Greater Caucasus region generally have higher SSY values (more than 150–300 t km−2 year−1). Partial correlation analyses demonstrated that such proxies of topography as height above nearest drainage (HAND) and normalized steepness index (Ksn) tend to be among the most important ones. However, a PLSR analysis suggested that these variables’ influence is likely associated with peak ground acceleration (PGA). We also found a strong relationship between land cover types (e.g., barren areas and cropland) and SSY in different elevation zones. Nonetheless, adding more gauging stations into analyses and more refined characterizations of the catchments may reveal additional trends.

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“…The phases commonly last 10-15 years but can extend over several decades [2,3,7]. The annual and seasonal river runoff has already been studied in many regions worldwide [2][3][4][5][6][13][14][15][16][17], as well as the fluxes of heat, suspended sediments, and chemicals within the river streams [5,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Extreme Low Flow during Long-Lasting Phases of River Runoff in the Central Part of the East European Plain

Георгиади

Groisman²

2023

Water

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In the rivers of the central part of the East European Plain (the Volga at Staritsa, the Oka at Kaluga, and the Don at Stanitsa Kazanskaya), long phases (10–15 years or more) of increased/decreased annual and seasonal runoff have occurred, as well as differences in the frequencies of extremely low flow conditions from the late 19th century to 2020. Phase boundaries were identified by cumulative deviation curves and statistical homogeneity. The frequencies of specific water flow values were estimated using the empirical curves of the exceedance probability of annual and seasonal water flows based on their long-term time series. In the century-long changes of rivers considered, two long contrasting phases were revealed. These phases are characterized by increased and decreased runoff of hydrological seasons. Near simultaneously, a phase of increased runoff was first observed for the freshet season. On the contrary, phases of decreased runoff were first observed for low-water seasons. The runoff phases differ significantly in duration and differences in flow. Significant differences were revealed in the frequency of low-water years for a low runoff with an exceedance probability above or equal to 75% and above or equal to 95%.

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How did the suspended sediment load change in the North Caucasus during the Anthropocene?

Cited by 7 publications

References 101 publications

Understanding sediment in river systems—Building on a 50‐year contribution

Understanding sediment in river systems—Building on a 50‐year contribution

Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region

Extreme Low Flow during Long-Lasting Phases of River Runoff in the Central Part of the East European Plain

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