scholarly journals The temporal variation of suspended sediment transport according to the dominance of suspended sediment sources. Case study: the Trotuş river between 2000 and 2014

2015 ◽  
Vol XIV (2) ◽  
pp. 101-111
Author(s):  
Dan Dumitriu ◽  
Florin Obreja
Keyword(s):  
Sediment Transport ◽  
Temporal Variation ◽  
Suspended Sediment ◽  
Suspended Sediment Transport ◽  
Sediment Sources

scholarly journals Suspended Sediment Analysis: Case Study of Berounka Sources

Geografie ◽  
1997 ◽  
Vol 102 (2) ◽  
pp. 130-138
Author(s):  
Zdeněk Kliment ◽  
Jan Kopp
Keyword(s):  
Seasonal Variation ◽  
Sediment Transport ◽  
Suspended Sediment ◽  
Inorganic Material ◽  
Suspended Sediments ◽  
Suspended Load ◽  
Suspended Sediment Transport ◽  
Sediment Analysis ◽  
Load Characteristics

The article examines suspended sediment transport in Mže, Radbuza, and Úhlava Rivers over the period 1989-95. Data on suspended sediments was collected at five observing sites. The research has been carried out in collaboration with Czech Hydrometeorological Institute, Plzeň. Apart from the suspended load characteristics also the seasonal variation of suspended sediments, siltation of Hracholusky and České Údolí Lakes, and the share of inorganic material in suspended sediments have been examined.

scholarly journals How do modeling choices and erosion zone locations impact the representation of connectivity and the dynamics of suspended sediments in a multi-source soil erosion model?

2021 ◽  
Vol 9 (1) ◽  
pp. 123-144
Author(s):  
Magdalena Uber ◽  
Guillaume Nord ◽  
Cédric Legout ◽  
Luis Cea
Keyword(s):  
Sediment Transport ◽  
Soil Erosion ◽  
Suspended Sediment ◽  
Structural Connectivity ◽  
Sediment Flux ◽  
Suspended Sediment Transport ◽  
Sediment Sources ◽  
Flux Variability ◽  
Suspended Sediment Flux ◽  
The Impact

Abstract. Soil erosion and suspended sediment transport understanding is an important issue in terms of soil and water resources management in the critical zone. In mesoscale watersheds (>10 km2) the spatial distribution of potential sediment sources within the catchment associated with rainfall dynamics is considered to be the main factor in the observed suspended sediment flux variability within and between runoff events. Given the high spatial heterogeneity that can exist for such scales of interest, distributed physically based models of soil erosion and sediment transport are powerful tools to distinguish the specific effect of structural and functional connectivity on suspended sediment flux dynamics. As the spatial discretization of a model and its parameterization can crucially influence how the structural connectivity of the catchment is represented in the model, this study analyzed the impact of modeling choices in terms of the contributing drainage area (CDA) threshold to define the river network and of Manning's roughness parameter (n) on the sediment flux variability at the outlet of two geomorphologically distinct watersheds. While the modeled liquid and solid discharges were found to be sensitive to these choices, the patterns of the modeled source contributions remained relatively similar when the CDA threshold was restricted to the range of 15 to 50 ha, with n restricted to the range 0.4–0.8 on the hillslopes and to 0.025–0.075 in the river. The comparison of the two catchments showed that the actual location of sediment sources was more important than the choices made during discretization and parameterization of the model. Among the various structural connectivity indicators used to describe the geological sources, the mean distance to the stream was the most relevant proxy for the temporal characteristics of the modeled sedigraphs.

scholarly journals Assesment of suspended sediment transport in Kalembah Sub watershed (Padang Watershed), case study of Pabatu Oil Palm Plantation

2017 ◽  
Vol 05 (2) ◽  
pp. 1-11
Author(s):  
Edi Susanto ◽  
◽  
Budi Setiawan ◽  
Yuli Suharnoto ◽  
Liyantono Liyantono ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Suspended Sediment ◽  
Oil Palm ◽  
Suspended Sediment Transport ◽  
Oil Palm Plantation

scholarly journals How do modeling choices impact the representation of structural connectivity and the dynamics of suspended sediment fluxes in distributed soil erosion models?

2020 ◽  
Author(s):  
Magdalena Uber ◽  
Guillaume Nord ◽  
Cédric Legout ◽  
Luis Cea
Keyword(s):  
Sediment Transport ◽  
Soil Erosion ◽  
Suspended Sediment ◽  
Structural Connectivity ◽  
Sediment Flux ◽  
Suspended Sediment Transport ◽  
Sediment Sources ◽  
Flux Variability ◽  
Suspended Sediment Flux ◽  
The Impact

Abstract. Soil erosion and suspended sediment transport understanding is an important issue in terms of soil and water resources management in the critical zone. In mesoscale watersheds (> 10 km2) the spatial distribution of potential sediment sources within the catchment associated to the rainfall dynamics are considered as the main factors of the observed suspended sediment flux variability within and between runoff events. Given the high spatial heterogeneity that can exist for such scales of interest, distributed physically based models of soil erosion and sediment transport are powerful tools to distinguish the specific effect of structural and functional connectivity on suspended sediment flux dynamics. As the spatial discretization of a model and its parameterization can crucially influence how structural connectivity of the catchment is represented in the model, this study analyzed the impact of modeling choices in terms of contributing drainage area (CDA) threshold to define the river network and of Manning's roughness parameter (n) on the sediment flux variability at the outlet of two geomorphological distinct watersheds. While the modelled liquid and solid discharges were found to be sensitive to these choices, the patterns of the modeled source contributions remained relatively similar when the CDA threshold was restricted to the range of 15 to 50 ha, n on the hillslopes to the range 0.4–0.8 and to 0.025–0.075 in the river. The comparison of both catchments showed that the actual location of sediment sources was more important than the choices made during discretization and parameterization of the model. Among the various structural connectivity indicators used to describe the geological sources, the mean distance to the stream was the most relevant proxy of the temporal characteristics of the modelled sedigraphs.

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