Vegetation transition and coarse sediment movement after gravel bar restoration with two meandering lanes in a steep river

2020 ◽  
Vol 30 ◽  
pp. 25-34
Author(s):  
Hirokazu Ikeda ◽  
Kosuke Iimura ◽  
Satoshi Komura ◽  
Chie Kawashima ◽  
Wataru Sato
Keyword(s):  
Sediment Movement ◽  
Coarse Sediment ◽  
Gravel Bar ◽  
Vegetation Transition

Radio Frequency Identification (RFID) technology applied to the definition of underwater and subaerial coarse sediment movement

2010 ◽  
Vol 228 (3-4) ◽  
pp. 140-150 ◽  
Author(s):  
Duccio Bertoni ◽  
Giovanni Sarti ◽  
Giuliano Benelli ◽  
Alessandro Pozzebon ◽  
Gianluca Raguseo
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Rfid Technology ◽  
Sediment Movement ◽  
Coarse Sediment ◽  
Frequency Identification ◽  
Definition Of

ONSET OF PLEISTOCENE CLIMATE GENERATED A PULSE OF COARSE SEDIMENT, PRESERVED AS THE SHARPYLDAK FORMATION IN THE TIEN SHAN RANGE OF KYRGYZSTAN

2016 ◽  
Author(s):  
Nyle Major Weldon ◽  
◽  
Ray J. Weldon ◽  
Win N.F. McLaughlin ◽  
Samantha S.B. Hopkins ◽  
...  
Keyword(s):  
Tien Shan ◽  
Coarse Sediment ◽  
Pleistocene Climate

scholarly journals Yield Stress Model for Natural Debris Flows in Presence of Fine and Coarse–Grained Sediments

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1865
Author(s):  
Leonardo Schippa
Keyword(s):  
Yield Stress ◽  
Debris Flows ◽  
Rheological Behaviour ◽  
Coarse Fraction ◽  
Coarse Grained ◽  
Stress Model ◽  
Coarse Sediment ◽  
Fine Grain ◽  
Sediment Fraction ◽  
Coarse To Fine

When dealing with natural geo–hazards, it is important to understand the influence of sediment sorting on debris flows. The presence of coarse fraction is one of the aspects which affects the rheological behaviour of natural viscous granular fluid mixtures. In this paper, experiments on reconstituted debris flow mixtures with different coarse–to–fine sediment ratios are considered. Such mixtures behave just as non–Newtonian yield stress fluids and their rheological behaviour is largely affected by the presence of coarse fraction. Experimental results demonstrate that yield stress is very sensitive not only to bulk sediment concentration but also to coarse sediment fraction. A novel yield stress model is presented. It accounts for an empirical grading function depending on the coarse–to–fine grain content. The yield stress model performed satisfactorily in comparison with the experiments, showing that it is almost independent of the coarse–to–fine grain fraction in case of dominant coarse sediment content.

Analysis of threshold and incipient conditions for sediment movement

2008 ◽  
Vol 55 (5) ◽  
pp. 423-430 ◽  
Author(s):  
A.A. Beheshti ◽  
B. Ataie-Ashtiani
Keyword(s):  
Sediment Movement
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