On the different regimes of subaqueous transport

TL;DR

This paper reviews various regimes of subaqueous sediment transport, analyzing thresholds, slopes, cohesion, and deriving key expressions for saturation flux and length across different transport modes.

Contribution

It provides a comprehensive synthesis of the different transport regimes and derives expressions for saturation flux and length, highlighting their dependencies.

Findings

Derived expressions for saturation flux and length.

Analyzed effects of slopes and cohesion on thresholds.

Compared erosion, momentum limited bed load, and suspended load regimes.

Abstract

We review different aspects of subaqueous sediment transport. We discuss the static threshold and its dependency with longitudinal and transverse slopes, as well as cohesion. We describe the different regimes of transport: erosion and momentum limited bed load, and suspended load. In all these cases, we derive the expressions of the saturation flux $q_{\rm sat}$ and the saturation length $L_{\rm sat}$ and discuss their dependencies.