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Experiments On Gravel-Sand Transitions: Behavior Of The Grain Size Gap Material (2023)
Journal Article
Dingle, E., & Venditti, J. (2023). Experiments On Gravel-Sand Transitions: Behavior Of The Grain Size Gap Material. Journal of Geophysical Research: Earth Surface, 128(11), Article e2023JF007117. https://doi.org/10.1029/2023JF007117

River bed sediments often lack fine gravel between 1 and 5 mm, a phenomenon referred to as the “grain size gap.” The gap corresponds to the rapid reduction in grain size associated with the gravel-sand transition (GST), where median bed material grai... Read More about Experiments On Gravel-Sand Transitions: Behavior Of The Grain Size Gap Material.

Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics (2023)
Journal Article
Parker, G., An, C., Lamb, M. P., Garcia, M. H., Dingle, E. H., & Venditti, J. G. (in press). Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics. Earth Surface Dynamics,

The grain size 2 mm is the conventional border between sand and gravel. This size is used extensively, and generally without much physical justification, to discriminate between such features as sedimentary deposit type (clast-supported versus matrix... Read More about Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics.

Experiments on Gravel‐Sand Transitions: Examination of Washload Deposition (2023)
Journal Article
Dingle, E. H., & Venditti, J. G. (2023). Experiments on Gravel‐Sand Transitions: Examination of Washload Deposition. Journal of Geophysical Research: Earth Surface, 128(7), Article e2023JF007116. https://doi.org/10.1029/2023jf007116

An abrupt transition in bed grain size occurs in river systems. Over a short downstream distance, often only a few channel widths, the bed surface fines from gravel (∼10 mm) to sand (∼1 mm). This is the gravel-sand transition (GST), and it is the onl... Read More about Experiments on Gravel‐Sand Transitions: Examination of Washload Deposition.

The gravel-sand transition and grain size gap in river bed sediments (2021)
Journal Article
Dingle, E. H., Kusack, K. M., & Venditti, J. G. (2021). The gravel-sand transition and grain size gap in river bed sediments. Earth-Science Reviews, 222, Article 103838. https://doi.org/10.1016/j.earscirev.2021.103838

River bed sediments typically fine downstream, where fining of median grain sizes are often described as exponential, except where fine gravel abruptly transitions to sand. Across the gravel-sand transition, median grain sizes can reduce by more than... Read More about The gravel-sand transition and grain size gap in river bed sediments.