Spatial and temporal variability of suspended sediment yield in the Kamchatka Krai, Russian Federation.

Kuksina, Liudmila and Alexeevsky, Nikolay (2015) Spatial and temporal variability of suspended sediment yield in the Kamchatka Krai, Russian Federation. In: Sediment Dynamics from the Summit to the Sea (Proceedings of a symposium held in New Orleans, Louisiana, USA, 11–14 December 2014). , ed. by Xu, Y. Jun. IAHS Publication, 367 . IAHS, Wallingford, pp. 304-311. DOI 10.5194/piahs-367-304-2015.

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Abstract

Research into the spatial and temporal variability of suspended sediment flux (SSF, t year-1) has been conducted for rivers in the Kamchatka Krai (in the far east of the Russian Federation). The study of long-term fluctuations in SSF was based on difference-integral curve analysis. Most of the rivers in the region are characterized by two relatively long-term trends in SSF; increases from the late 1970s to the early 1980s, followed by a subsequent decline. Kamchatka was divided into regions based on similar conditions of specific suspended sediment yield (SSSY, t km-2 year-1) followed by a determination of the various factors controlling it. New maps of suspended sediment concentration (SSC, mg L-1) and SSSY for Kamchatka also were constructed and, based on this study, there currently appear to be 18 SSC and 13 SSSY regions, as opposed to 4 and 2 regions, respectively, as had been determined in the 1970s. The influence of volcanoes on SSF can be substantial, and can increase up to 5-fold after eruptions; SSC can reach 6∙105 mg L-1 in rivers draining the flanks of volcanoes.

Document Type: Book chapter
Keywords: suspended sediment concentration; volcanic eruptions; rainfall erosive factor; specific sediment yield; suspended sediment concentration; multiple regressions; Kamchatka Krai, Russia
DOI etc.: 10.5194/piahs-367-304-2015
ISSN: 2199-899X
Projects: Otto Schmidt Laboratory
Date Deposited: 24 Jan 2017 13:37
Last Modified: 24 Jan 2017 13:37
URI: http://oceanrep.geomar.de/id/eprint/35885

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