Journal
OCEAN DYNAMICS
Volume 65, Issue 3, Pages 325-339Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10236-015-0813-2
Keywords
Wind-driven flow; Coastal basins; Resonance; Idealised process-based modelling; Coriolis effects; Spectral response
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Funding
- Chinese Scholarship Council
- research programme 'Impact of climate change and human intervention on hydrodynamics and environmental conditions in the Ems-Dollart estuary: an integrated data-modelling approach'
- Bundesministerium fur Bildung und Forschung (BMBF)
- Netherlands Organization for Scientific Research (NWO), as part of the international Wadden Sea programme (GEORISK project)
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We present an idealised process-based model to study the possibly resonant response of closed basins subject to periodic wind forcing. Two solution methods are adopted: a collocation technique (valid for arbitrary rotation) and an analytical expansion (assuming weak rotation). The spectral response, as obtained from our model, displays resonance peaks, which we explain by linking them to the spatial pattern of the wind forcing, the along-wind and cross-wind basin dimensions as well as the influence of rotation. Increasing bottom friction lowers the peaks. Finally, we illustrate how the spectral response is reflected in the time-dependent set-up due to a single wind event.
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