Thickness-weighted averaging in tidal estuaries and the vertical distribution of the eulerian residual transport

Journal article (2019)

Authors

Knut Klingbeil Leibniz Institute for Baltic Sea Research Warnemünde, Hamburg University of Technology

Johannes Becherer Oregon State University

Elisabeth Schulz Leibniz Institute for Baltic Sea Research Warnemünde

Huib E. de Swart Universiteit Utrecht

H.M. Schuttelaars Mathematical Physics -

Arnoldo Valle-Levinson University of Florida

Hans Burchard Leibniz Institute for Baltic Sea Research Warnemünde

Research Group

Mathematical Physics () (TU Delft)

DOI: https://doi.org/10.1175/JPO-D-18-0083.1

Estuaries Tides Filtering techniques Vertical coordinates Mass fluxes/transport Baroclinic flows

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Published Date

2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Delft Institute of Applied Mathematics

Research Group

Mathematical Physics

Abstract

This paper presents thickness-weighted averaging (TWA) in generalized vertical coordinates as a unified framework for a variety of existing tidal-averaging concepts in seas and estuaries. Vertical profiles of resulting residual quantities depend on the specific vertical coordinate, which is held fixed during the averaging process. This dependence is demonstrated through the application to one-dimensional analytical tidal flow with sediment transport, to field observations from a tidal channel, and to model results from a two-dimensional estuary. The use of different coordinate systems provides complementary views on the residual dynamics and stresses the importance of a correct interpretation of residual quantities obtained by tidal averaging.

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- Embargo expired in 26-12-2019