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| Titel |
Lagrangian structure of flows in the Chesapeake Bay: challenges and perspectives on the analysis of estuarine flows |
| VerfasserIn |
M. Branicki, R. Malek-Madani |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 17, no. 2 ; Nr. 17, no. 2 (2010-03-26), S.149-168 |
| Datensatznummer |
250013660
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| Publikation (Nr.) |
 copernicus.org/npg-17-149-2010.pdf |
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| Zusammenfassung |
| In this work we discuss applications of Lagrangian techniques to study
transport properties of flows generated by shallow water models of estuarine
flows. We focus on the flow in the Chesapeake Bay generated by Quoddy (see Lynch and Werner, 1991), a finite-element (shallow water) model adopted to the bay by
Gross et al. (2001). The main goal of this analysis is to outline the potential
benefits of using Lagrangian tools for both understanding transport
properties of such flows, and for validating the model output and identifying
model deficiencies. We argue that the currently available 2-D Lagrangian
tools, including the stable and unstable manifolds of hyperbolic trajectories
and techniques exploiting 2-D finite-time Lyapunov exponent fields, are of
limited use in the case of partially mixed estuarine flows. A further
development and efficient implementation of three-dimensional Lagrangian
techniques, as well as improvements in the shallow-water modelling of 3-D
velocity fields, are required for reliable transport analysis in such flows.
Some aspects of the 3-D trajectory structure in the Chesapeake Bay, based on
the Quoddy output, are also discussed. |
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