Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region

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<sup>−2</sup> year<sup>−1</sup>) in the Caucasus region using measurements from 244 gauging stations (GS)...

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Autores principales:	Valentin Golosov, Anatoly Tsyplenkov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sediment yield suspended sediment Caucasus soil erosion denudation rates Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/0264898dfbbd4dfebb2e3b4dc1d25952
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spelling	oai:doaj.org-article:0264898dfbbd4dfebb2e3b4dc1d259522021-11-25T19:15:02ZFactors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region10.3390/w132231732073-4441https://doaj.org/article/0264898dfbbd4dfebb2e3b4dc1d259522021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3173https://doaj.org/toc/2073-4441This paper discusses the joint impact of catchment complexity in topography, tectonics, climate, landuse patterns, and lithology on the suspended sediment yield (SSY, t km<sup>−2</sup> year<sup>−1</sup>) 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<sup>−2</sup> year<sup>−1</sup>), the Greater Caucasus region generally have higher SSY values (more than 150–300 t km<sup>−2</sup> year<sup>−1</sup>). Partial correlation analyses demonstrated that such proxies of topography as height above nearest drainage (HAND) and normalized steepness index (K<sub>sn</sub>) 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.Valentin GolosovAnatoly TsyplenkovMDPI AGarticlesediment yieldsuspended sedimentCaucasussoil erosiondenudation ratesHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3173, p 3173 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sediment yield suspended sediment Caucasus soil erosion denudation rates Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	sediment yield suspended sediment Caucasus soil erosion denudation rates Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Valentin Golosov Anatoly Tsyplenkov Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
description	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<sup>−2</sup> year<sup>−1</sup>) 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<sup>−2</sup> year<sup>−1</sup>), the Greater Caucasus region generally have higher SSY values (more than 150–300 t km<sup>−2</sup> year<sup>−1</sup>). Partial correlation analyses demonstrated that such proxies of topography as height above nearest drainage (HAND) and normalized steepness index (K<sub>sn</sub>) 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.
format	article
author	Valentin Golosov Anatoly Tsyplenkov
author_facet	Valentin Golosov Anatoly Tsyplenkov
author_sort	Valentin Golosov
title	Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
title_short	Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
title_full	Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
title_fullStr	Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
title_full_unstemmed	Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region
title_sort	factors controlling contemporary suspended sediment yield in the caucasus region
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0264898dfbbd4dfebb2e3b4dc1d25952
work_keys_str_mv	AT valentingolosov factorscontrollingcontemporarysuspendedsedimentyieldinthecaucasusregion AT anatolytsyplenkov factorscontrollingcontemporarysuspendedsedimentyieldinthecaucasusregion
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Factors Controlling Contemporary Suspended Sediment Yield in the Caucasus Region

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