Observations of estuarine circulation and solitary internal waves in a highly energetic tidal channel

Groeskamp, Sjoerd; Nauw, Janine J.; Maas, Leo R. M.

doi:10.1007/s10236-011-0455-y

Cited by 23 publications

(10 citation statements)

References 52 publications

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“…Generation occurs especially in the presence of a vertical shear current. Laboratory experiments (e.g., Melville and Helfrich, 1987;Melville and Macomb, 1987) .g., Pietrzak et al, 1990;Kranenburg et al, 1991;Bogucki et al, 1997;Groeskamp et al, 2011;Stastna, 2011). Figure 6).…”

Section: Internal Tide Evolutionmentioning

confidence: 99%

The Generation of Nonlinear Internal Waves

Jackson¹,

Silva²,

Jeans³

2012

oceanog

159

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Section: Internal Tide Evolutionmentioning

confidence: 99%

The Generation of Nonlinear Internal Waves

Jackson¹,

Silva²,

Jeans³

2012

oceanog

159

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“…More details about the tide-front interaction mechanism of ISW generation may be found e.g. in Nash and Moum (2005) and Groeskamp et al (2011). Fig.…”

Section: The Origin Of Internal Solitary Wavesmentioning

confidence: 99%

Tidally-generated internal waves in Southeast Hudson Bay

Petrusevich

Dmitrenko

Kozlov

et al. 2018

Continental Shelf Research

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The location of the amphidromic point of the M2 tide in Hudson Bay roughly coincides with Belcher Islands, a region where the surface mixed layer stays relatively fresh throughout summer and winter due to significant ice melt and river discharge. High-resolution satellite radar imagery for the ice-free season revealed that the coastal region in the southeast Belcher Islands is a hot spot for short-period internal wave activity. For a first investigation of tidal dynamics in the region, we took advantage of the sea ice platform to deploy an ice-tethered mooring consisting of nine conductivity and temperature sensors and an acoustic Doppler current profiler. The mooring was deployed at 65 m depth in January-March 2014 in a narrow channel between Broomfield and O′Leary islands located in the southeast tip of the Belcher Islands group in Hudson Bay (56°20′N, 79°30′W), northeast Canada. The surface mixed layer under the land-fast ice in this area stays relatively fresh through winter presumably because of significant winter river discharge in nearby James Bay. The mooring recorded oscillations of temperature and salinity throughout the whole water column, which were attributed to vertical displacement caused by internal tidal waves. The tidal harmonic analysis performed for the M 2 tidal constituent showed the dominance of the baroclinic tide with maximum velocity amplitudes at the surface and decreasing with depth. Vertical displacements of water parcels derived from both temperature and salinity were statistically similar and displayed the maximum values of 11.9 m at 35 m (instrument depth). The combination of winter hydrographic data and summer satellite observations confirmed that the observed internal waves were generated by the interaction of strong tides, typical for Hudson Bay, with highly variable bottom topography southeast of the Belcher Islands archipelago.

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“…Internal solitary waves (ISWs) continue to attract burgeoning interest, not least because of their pervasiveness in many marine and freshwater environments (Horn et al 2001;Nash & Moum 2005;Helfrich & Melville 2006;Groeskamp et al 2011;Lamb 2014;Bourgault et al 2016;Boegman & Stastna 2019). They propagate on density interfaces in stably-stratified fluid systems and may be characterised generally as nonlinear, dispersive waves of quasi-permanent form with an amplitude comparable with the thickness of the interface on which they travel and also, in many cases of interest, the overall depth of the fluid system in question (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Shoaling mode-2 internal solitary-like waves

et al. 2019

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The propagation of a train of mode-2 internal solitary-like waves (ISWs) over a uniformly sloping, solid topographic boundary, has been studied by means of a combined laboratory and numerical investigation. The waves are generated by a lock-release method. Features of their shoaling include (i) formation of an oscillatory tail, (ii) degeneration of the wave form, (iii) wave run up, (iv) boundary layer separation, (v) vortex formation and re-suspension at the bed and (vi) a reflected wave signal. Slope steepness, $s$, is defined to be the height of the slope divided by the slope base length. In shallow slope cases ($s\leqslant 0.07$), the wave form is destroyed by the shoaling process; the leading mode-2 ISW degenerates into a train of mode-1 waves of elevation and little boundary layer activity is seen. For steeper slopes ($s\geqslant 0.13$), boundary layer separation, vortex formation and re-suspension at the bed are observed. The boundary layer dynamics is shown (numerically) to be dependent on the Reynolds number of the flow. A reflected mode-2 wave signal and wave run up are seen for slopes of steepness $s\geqslant 0.20$. The wave run up distance is shown to be proportional to the length scale $ac^{2}/g^{\prime }h_{2}\sin \unicode[STIX]{x1D703}$ where $a,c,g^{\prime },h_{2}$ and $\unicode[STIX]{x1D703}$ are wave amplitude, wave speed, reduced gravity, pycnocline thickness and slope angle respectively.

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Observations of estuarine circulation and solitary internal waves in a highly energetic tidal channel

Cited by 23 publications

References 52 publications

The Generation of Nonlinear Internal Waves

The Generation of Nonlinear Internal Waves

Tidally-generated internal waves in Southeast Hudson Bay

Shoaling mode-2 internal solitary-like waves

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