Abstract Structure-from-Motion (SfM) photogrammetry has become widely used for
topographic data collection in field and laboratory studies. However, the relative …

To reproduce the natural flow topography in a laboratory environment, it is crucial to
recapture its bed condition in order to ensure the accurate representation. Water-worked …

Bed roughness height (k) is a key parameter for velocity prediction in open‐channel flows.
There is not yet a firm consensus about whether characteristic particle size D84 or (standard …

Grain-scale monitoring of fluvial morphology is important for the evaluation of river system
dynamics. Significant progress in remote sensing and computer performance allows rapid …

The surface structure of static armor layers generated from water‐worked gravel bed
channels was investigated with primary focus on the influence of sand content and flow rate …

Bedload transport is a complex phenomenon that is not well understood, especially for
poorly sorted sediment and low transport rates, which is what is typically found in alpine …

Evidence of downstream fining in sediment size along the length of a gravel bar has
frequently been observed. However, there is limited quantitative information on the variation …

Surface roughness is a term used in fluvial research without a unanimous definition.
Clarification of the term and improved parameterisation is needed in future research …

Gravel-bed surfaces exist widely in natural rivers, and their roughness characteristics are
closely relevant to many aspects of river dynamics, such as sediment incipient motion, bed …

Spectral behavior of gravel dunes formed under different flow discharges is analyzed with
an attempt to verify the '− 3'spectral law that has been confirmed extensively for sand dunes …