North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data

This study presents detailed suspended sediment budget for the four Siberian river deltas, representing contrasting conditions between Northern and Southern environments. Two of the studied rivers empty their water and sediments into the marine located in the permafrost zone in the Arctic region (Le...

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Autores principales:	Sergey Chalov, Kristina Prokopeva, Michał Habel
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	suspended sediment budget remote sensing Siberian rivers deltas arctic region Landsat images models Science Q
Acceso en línea:	https://doaj.org/article/afa59e1971614cb1bcd6e4ed5939dbc8
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spelling	oai:doaj.org-article:afa59e1971614cb1bcd6e4ed5939dbc82021-11-25T18:54:10ZNorth to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data10.3390/rs132245492072-4292https://doaj.org/article/afa59e1971614cb1bcd6e4ed5939dbc82021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4549https://doaj.org/toc/2072-4292This study presents detailed suspended sediment budget for the four Siberian river deltas, representing contrasting conditions between Northern and Southern environments. Two of the studied rivers empty their water and sediments into the marine located in the permafrost zone in the Arctic region (Lena and Kolyma), and the other two (Selenga and Upper Angara) flow into Lake Baikal located in the steppe and forest-steppe zone of Southern Siberia. For the first time, these poorly monitored areas are analyzed in terms of the long-term and seasonal changes of spatial patterns of suspended sediment concentrations (SSC) over distributaries systems. Remote sensing reflectance is derived from continuous time series of Landsat images and calibrated with the onsite field measurements of SSC. Seasonal variability of suspended sediment changes over deltas was captured for the period from 1989 to 2020. We identify significant variability in the sedimentation processes between different deltas, which is explained by particularities of deltas networks and geomorphology and the existence of specific drivers—continuous permafrost impact in the North and abundant aquatic vegetation and wetland-dominated areas in the South. The study emphasizes that differences exist between Northern and Southern deltas regarding suspended sediments transport conditions. Mostly retention of suspended sediment is observed for Southern deltas due to sediment storage at submerged banks and marshlands located in the backwater zone of the delta during high discharges. In the Northern (arctic) deltas due to permafrost impacts (melting of the permafrost), the absence of sub-aquatic banks and river to ocean interactions of suspended sediment transport is mostly increased downwards, predominantly under higher discharges and along main distributary channels. These results shine light on the geochemical functions of the deltas and patterns of sequestering various metals bound to river sediments.Sergey ChalovKristina ProkopevaMichał HabelMDPI AGarticlesuspended sediment budgetremote sensingSiberian riversdeltasarctic regionLandsat images modelsScienceQENRemote Sensing, Vol 13, Iss 4549, p 4549 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	suspended sediment budget remote sensing Siberian rivers deltas arctic region Landsat images models Science Q
spellingShingle	suspended sediment budget remote sensing Siberian rivers deltas arctic region Landsat images models Science Q Sergey Chalov Kristina Prokopeva Michał Habel North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
description	This study presents detailed suspended sediment budget for the four Siberian river deltas, representing contrasting conditions between Northern and Southern environments. Two of the studied rivers empty their water and sediments into the marine located in the permafrost zone in the Arctic region (Lena and Kolyma), and the other two (Selenga and Upper Angara) flow into Lake Baikal located in the steppe and forest-steppe zone of Southern Siberia. For the first time, these poorly monitored areas are analyzed in terms of the long-term and seasonal changes of spatial patterns of suspended sediment concentrations (SSC) over distributaries systems. Remote sensing reflectance is derived from continuous time series of Landsat images and calibrated with the onsite field measurements of SSC. Seasonal variability of suspended sediment changes over deltas was captured for the period from 1989 to 2020. We identify significant variability in the sedimentation processes between different deltas, which is explained by particularities of deltas networks and geomorphology and the existence of specific drivers—continuous permafrost impact in the North and abundant aquatic vegetation and wetland-dominated areas in the South. The study emphasizes that differences exist between Northern and Southern deltas regarding suspended sediments transport conditions. Mostly retention of suspended sediment is observed for Southern deltas due to sediment storage at submerged banks and marshlands located in the backwater zone of the delta during high discharges. In the Northern (arctic) deltas due to permafrost impacts (melting of the permafrost), the absence of sub-aquatic banks and river to ocean interactions of suspended sediment transport is mostly increased downwards, predominantly under higher discharges and along main distributary channels. These results shine light on the geochemical functions of the deltas and patterns of sequestering various metals bound to river sediments.
format	article
author	Sergey Chalov Kristina Prokopeva Michał Habel
author_facet	Sergey Chalov Kristina Prokopeva Michał Habel
author_sort	Sergey Chalov
title	North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
title_short	North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
title_full	North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
title_fullStr	North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
title_full_unstemmed	North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data
title_sort	north to south variations in the suspended sediment transport budget within large siberian river deltas revealed by remote sensing data
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/afa59e1971614cb1bcd6e4ed5939dbc8
work_keys_str_mv	AT sergeychalov northtosouthvariationsinthesuspendedsedimenttransportbudgetwithinlargesiberianriverdeltasrevealedbyremotesensingdata AT kristinaprokopeva northtosouthvariationsinthesuspendedsedimenttransportbudgetwithinlargesiberianriverdeltasrevealedbyremotesensingdata AT michałhabel northtosouthvariationsinthesuspendedsedimenttransportbudgetwithinlargesiberianriverdeltasrevealedbyremotesensingdata
_version_	1718410612324696064

North to South Variations in the Suspended Sediment Transport Budget within Large Siberian River Deltas Revealed by Remote Sensing Data

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