Journal article

A Model for Mass Transport Across the Sediment-Water Interface

Joey J Voermans, Marco Ghisalberti, Gregory N Ivey

Water Resources Research | AMER GEOPHYSICAL UNION | Published : 2018

Abstract

Molecular diffusion, dispersion, and turbulent diffusion can all contribute to the transport of mass across the sediment-water interface (SWI). Flow observations across the SWI are critical in the description of these transport processes but are currently very limited as the sediment bed is inaccessible in most experimental approaches. We overcome this constraint by combining refractive-index matching (RIM) with particle-tracking velocimetry (PTV). Using measurements of the flow dynamics across the SWI, we propose a mechanistic model that describes the interfacial mass transport over a wide and relevant parameter space. We show there are three transport regimes where molecular, dispersive, o..

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Grants

Awarded by Australian Research Council's Discovery Projects funding scheme


Funding Acknowledgements

This research was supported under the Australian Research Council's Discovery Projects funding scheme (project DP120102500). We thank the three anonymous reviewers for their comments and suggestions. All data in this article are provided as supporting information Table S1. Mass flux observations used in this study are available from the cited publications.