Gravity-driven size segregation is important in mountain streams where a wide range of grain sizes are transported as bedload. More particularly, vertical multi-scale process that originates interactions at the scale particles with morphological consequences on reach scale. To address this issue, volume-averaged multi-phase flow model for immersed bidisperse granular flows was developed based a...

Abstract. Channel processes under high-magnitude flow events are of central interest to river science and management as they may produce large volumes sediment transport geomorphic work. However, bedload these conditions poorly understood due data collection limitations the prevalence physical models that restrict feedbacks surrounding morphologic adjustment. The extension mechanistic equations...

Sediment transport by surficial flow likely occurs on Titan. Titan is thought to have a volatile cycle, such as on Earth and likely in the past on Mars, which would entail surficial liquid flow. And surficial flow is implied in interpretations of Cassini–Hyugens data as showing fluvial channels, which would require sediment transport by surficial flow to form the observable features. We present...

Marine sediment deposits near the Qiongzhou Strait have great potential as sources for beach nourishment and infrastructure industry aggregates. Estimation of bedload transport during spring tide improves understanding movement characteristic under dynamic conditions, which would further favor assessment mining marine sand resources. To study at eastern entrance Strait, surficial distributions ...

Abstract Variable renewable energy sources, e.g. solar and wind power, require flexible management of sources to stabilize the power grid. Immediate changes in generation usage is compensated for by operation hydropower plants. This subsequently leads frequent flow fluctuations – hydropeaking downstream plant. study examines short-term impacts plants on sediment transport using numerical morpho...

Abstract. The Swiss plate geophone (SPG) system has been installed and tested in more than 20 steep gravel-bed streams rivers, related studies generally resulted rather robust calibration relations between signal impulse counts transported bedload mass. Here, we compare this with three alternative surrogate measuring systems. A variant of the SPG uses same frame (housing) set-up but an accelero...