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[[image:Frontpage-Hstar1.png|200px|left|link=Model_highlight#Disentangling Rivers]] '''Disentangling Rivers'''<br>Explaining the morphology of large rivers is a notoriously difficult problem; existing theory fails to predict whether large river systems are meandering, anabranching or braiding. New physics-based modeling combined with rules for vegetation and floodplain evolution capture river morphology remarkably accurately. Prof. Andrew Nicholas of Exeter University, UK, reports results of the HSTAR model showing river channel and bar migration to vary with both sediment characteristics and transport dynamics and with floodplain sedimentation. [[Model_highlight#Disentangling Rivers|More...]]<br><br>[mailto:csdmsweb@colorado.edu Nominate a model]
[[Image:Rigidstemvegetation_frontpage.png|200px|left|link=Science_spotlights#Vegetation_Can_Increase_Bedload_Flux]]
'''Vegetation Can Increase Bedload Transport'''<br>Vegetation in floodplains is often thought to be an efficient agent to alter flow and trap sediment. However, tank experiments show that bedload fluxes can actually be higher through vegetation patches due to increased near-bed high turbulence and scouring. A study presented in a recent issue of Journal of Geophysical Research suggests that bedload fluxes around vegetation can vary spatially by an order of magnitude and local scour zones and bedforms could negatively impact survival of nearby plants. [[Science_spotlights#Vegetation_Can_Increase_Bedload_Flux|More...]]<br><br>[mailto:csdmsweb@colorado.edu Nominate a science spotlight]

Revision as of 17:15, 8 January 2014

Rigidstemvegetation frontpage.png

Vegetation Can Increase Bedload Transport
Vegetation in floodplains is often thought to be an efficient agent to alter flow and trap sediment. However, tank experiments show that bedload fluxes can actually be higher through vegetation patches due to increased near-bed high turbulence and scouring. A study presented in a recent issue of Journal of Geophysical Research suggests that bedload fluxes around vegetation can vary spatially by an order of magnitude and local scour zones and bedforms could negatively impact survival of nearby plants. More...

Nominate a science spotlight

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