The physics of sediment transport initiation, cessation, and entrainment across aeolian and fluvial environments

T Pähtz, AH Clark, M Valyrakis… - Reviews of …, 2020‏ - Wiley Online Library
Predicting the morphodynamics of sedimentary landscapes due to fluvial and aeolian flows
requires answering the following questions: Is the flow strong enough to initiate sediment …

Hydrodynamics of vegetated channels

HM Nepf - Journal of Hydraulic Research, 2012‏ - Taylor & Francis
This paper highlights some recent trends in vegetation hydrodynamics, focusing on
conditions within channels and spanning spatial scales from individual blades, to canopies …

Recent advances in the dynamics of steep channels

F Comiti, L Mao - Gravel‐bed rivers: Processes, tools …, 2012‏ - Wiley Online Library
This paper presents an overview of the recent geomorphological and hydraulic insights on
the dynamics of steep mountain streams, here defined as those channels with slope> 4–5 …

Is the critical Shields stress for incipient sediment motion dependent on channel‐bed slope?

MP Lamb, WE Dietrich… - Journal of Geophysical …, 2008‏ - Wiley Online Library
Data from laboratory flumes and natural streams show that the critical Shields stress for
initial sediment motion increases with channel slope, which indicates that particles of the …

The role of impulse on the initiation of particle movement under turbulent flow conditions

P Diplas, CL Dancey, AO Celik, M Valyrakis, K Greer… - Science, 2008‏ - science.org
Fundamental to our understanding of erosional and transport phenomena in earth-surface
dynamics and engineering is knowledge of the conditions under which sediment motion will …

Sorting out river channel patterns

MG Kleinhans - Progress in physical geography, 2010‏ - journals.sagepub.com
Rivers self-organize their pattern/planform through feedbacks between bars, channels,
floodplain and vegetation, which emerge as a result of the basic spatial sorting process of …

Static and dynamic angles of repose in loose granular materials under reduced gravity

MG Kleinhans, H Markies, SJ De Vet… - Journal of …, 2011‏ - Wiley Online Library
Granular materials avalanche when a static angle of repose is exceeded and freeze at a
dynamic angle of repose. Such avalanches occur subaerially on steep hillslopes and wind …

A turbulence‐based bed‐load transport model for bare and vegetated channels

JQ Yang, HM Nepf - Geophysical Research Letters, 2018‏ - Wiley Online Library
Previous studies have shown that sediment transport models based on bed shear stress (τ)
are not accurate for regions with vegetation. The present study demonstrated that the …

Theoretical development on the effects of changing flow hydraulics on incipient bed load motion

A Recking - Water Resources Research, 2009‏ - Wiley Online Library
Several decades of flume and field measurements have indicated that in rough turbulent
flows the critical Shields stress increases with increasing slope and associated decreasing …

A microstructural approach to bed load transport: mean behaviour and fluctuations of particle transport rates

C Ancey, J Heyman - Journal of Fluid Mechanics, 2014‏ - cambridge.org
This paper concerns a model of bed load transport, which describes the advection and
dispersion of coarse particles carried by a turbulent water stream. The challenge is to …