Global ETD Search
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Showing 1 to 6 of 6 for “"coastal trapped waves"”.
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Forced synoptic coastal-trapped waves along the southern African coastline
… characterise the shelf circulation in terms of coastal-trapped wave (CTW) theory. In this dissertation, an analysis of atmospheric pressure and sea level data from 1980 to 1990, a scale analysis of the equations of motion and numerical modelling are used to characterise the subinertial …
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Sea level variability and coastal trapped waves around southern Africa
The propagation characteristics of the coastal trapped waves (CTWs) around the coast of southern Africa were investigated by analyzing the observed daily mean sea level data from 16 coastal tide gauges, as well as outputs of sea level anomalies from the Hybrid Coordinate Ocean Model (HYCOM) at a …
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Scattering of coastal-trapped waves by irregularities in coastline and topography
… of freely-propagating subinertial frequency coastal-trapped waves (CTWS) by large variations in coastline and topography using analytical and numerical techniques. Particular attention is paid to the role of stratification because, as shown, the introduction of even modest stratification can …
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A numerical modelling study of Port Alfred upwelling along the inshore edge of Agulhas current
… of ~2.5km from 1993 to 2014. We tested several coastal upwelling indices and we identified 56 upwelling events from the residuals of sea surface temperature and 49 upwelling events through the decomposition of the vertical velocity. To assess the influence of the wind, we measured the alongshore …
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A study of Benguela Niños and Niñas from 1958 to 2015
… Ocean dynamics and the variability in the coastal region of Angola-Namibia at interannual timescales over 1998 to 2012. The PIRATA records help to define an index of equatorial Kelvin wave activities in the Equatorial Atlantic. There is a good agreement between PIRATA monthly dynamic height …
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Low Frequency Edge Waves and Their Role In Coastal Dynamics
<p>Low frequency edge waves with large spatial scales represent an important part of the coastal ocean response to tidal and atmospheric forcing. A semidiurnal tide traveling over the continental shelf and slope can be propagated by a Hybrid Kelvin-Edge Wave (HKEW), which is the fundamental mode …