scholarly journals Linking fluvial bed sediment transport across scales

2012 ◽  
Vol 39 (20) ◽  
Author(s):  
Yong Zhang ◽  
Mark M. Meerschaert ◽  
Aaron I. Packman
Keyword(s):  
Sediment Transport ◽  
Bed Sediment

Effects of suspended sediment characteristics and bed sediment transport on streambed clogging

2005 ◽  
Vol 19 (2) ◽  
pp. 413-427 ◽  
Author(s):  
Kristin J. Rehg ◽  
Aaron I. Packman ◽  
Jianhong Ren
Keyword(s):  
Sediment Transport ◽  
Suspended Sediment ◽  
Bed Sediment ◽  
Sediment Characteristics

scholarly journals Sediment segregation on weirs of lowland rivers

2010 ◽  
Vol 42 (1) ◽  
pp. 177-185
Author(s):  
Sławomir Bajkowski
Keyword(s):  
Sediment Transport ◽  
Granulometric Composition ◽  
Flow Characteristics ◽  
Hydrological Regime ◽  
Bed Sediment ◽  
Lowland Rivers ◽  
Stilling Basin ◽  
Research Facilities

Sediment segregation on weirs of lowland rivers Erosion and accumulation processes in the vicinity of water structures develop depending on the life of the facility, hydrological regime and morphology of the riverbed. Diversification of flow characteristics affects the segregation of bed sediment on section of period of weirs. Knowledge of factors determining granulometric diversity of bottom material allows for more appropriate bed and riverbanks protections design. It also enables estimation of the conditions of sediment transport down the watercourse and its participation in the balance of the transport of bottom material in the watercourse. Areas where sediment accumulates on the water structures are up water and down water positions, stilling basin and other cavities of the structure. The article presents an analysis of granulometric composition of bottom material in selected lowland weirs. Research facilities are weirs located on lowland rivers. Segregation of sediment material was observed on weir sections. Thickest sediment is piled in up water, smallest in down water.

Field measurement and modeling of near-bed sediment transport processes with fluid mud layer in Tokyo Bay

2012 ◽  
Vol 62 (10-12) ◽  
pp. 1535-1544 ◽  
Author(s):  
Yasuyuki Nakagawa ◽  
Kazuo Nadaoka ◽  
Hiroshi Yagi ◽  
Ryuichi Ariji ◽  
Haruo Yoneyama ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Field Measurement ◽  
Transport Processes ◽  
Tokyo Bay ◽  
Fluid Mud ◽  
Bed Sediment

scholarly journals Bed-Sediment Transport Conditions along the Sagavanirktok River in Northern Alaska, USA

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 774
Author(s):  
Horacio Toniolo
Keyword(s):  
Sediment Transport ◽  
Water Levels ◽  
Bed Sediment ◽  
Flood Events ◽  
Expected Time ◽  
Resource Managers ◽  
Extensive Field ◽  
Northern Alaska ◽  
Intrinsic Error ◽  
Water Depths

This manuscript presents a study in predicting bed-sediment transport rates along the Sagavanirktok River in Alaska. Extensive field activities took place to accomplish this goal: four hydro-meteorological stations were installed in a 150 km reach along the river in summer 2015. During the same year, pits were excavated near the stations, and in subsequent summers, the pits were surveyed multiple times in conjunction with taking discharge measurements. Water slope was measured and bed sediment was characterized. Site-specific relationships between water levels and cross-section water depths were developed. Volume change between consecutive surveys was calculated, and main flood events between surveys were identified. Finally, the first bed-sediment transport equations valid for the Sagavanirktok River were developed. Considering the intrinsic error in sediment transport predictions, the agreement between predicted and measured sediment transport values is good. These equations could be used by resource managers when predicting the expected time for an excavated material site in the Sagavanirktok River to refill.

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