Near-field dynamics of discrete dredged material discharge events in the Elbe estuary: Quantifying deposition fraction and plume evolution

Dredging and relocation of sediments are essential to maintain navigable waterways and port access in many estuaries. The relocated volumes can significantly influence long-term morphological evolution and thus need to be represented in relevant numerical models. In morphodynamic simulations, relocation processes require parameterization, typically based on limited empirical data, as dedicated field measurements of near-field processes during discharge at relocation sites are scarce. Therefore, this study aims to quantify (i) the spatiotemporal evolution of the suspended sediment plume, (ii) the deposition fraction and resulting changes in bed morphology, and (iii) the sediment mass balance for individual discharge events.

Subjects

dredging

relocation

sediment

plume

deposition

measurement data

DDC Class

551: Geology, Hydrology Meteorology

Funding(s)

Simulation und Analyse der hydrologischen und morphologischen Entwicklung der Tideelbe für den Zeitraum von 2013 bis 2018; Messungen in der Natur und experimentelle Untersuchungen im Labor

Funding Organisations

Bundesministerium für Forschung, Technologie und Raumfahrt (BMFTR)

Lizenz

https://creativecommons.org/licenses/by/4.0/

Publication version

publishedVersion

Name

Intercoh26_Poster_Witt.pdf

Size

12.78 MB

Format

Adobe PDF

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Near-field dynamics of discrete dredged material discharge events in the Elbe estuary: Quantifying deposition fraction and plume evolution