scholarly journals Observations of multiple internal wave packets in a tidal river plume

2021 ◽  
Author(s):  
Sabine Rijnsburger ◽  
Raúl P. Flores ◽  
Julie D. Pietrzak ◽  
Kevin G. Lamb ◽  
Nicole L. Jones ◽  
...  
Keyword(s):  
Internal Wave ◽  
Wave Packets ◽  
River Plume ◽  
Tidal River

Modelling and observations of oceanic nonlinear internal wave packets affected by the Earth’s rotation

2017 ◽  
Vol 116 ◽  
pp. 146-158 ◽  
Author(s):  
Roger Grimshaw ◽  
Jose C. B. da Silva ◽  
Jorge M. Magalhaes
Keyword(s):  
Internal Wave ◽  
Wave Packets ◽  
Earth’S Rotation ◽  
Earth's Rotation ◽  
Nonlinear Internal Wave

Tidally generated internal wave packets in Massachusetts Bay

Nature ◽  
1979 ◽  
Vol 278 (5702) ◽  
pp. 312-317 ◽  
Author(s):  
Loren R. Haury ◽  
Melbourne G. Briscoe ◽  
Marshall H. Orr
Keyword(s):  
Internal Wave ◽  
Wave Packets ◽  
Massachusetts Bay

scholarly journals Freshwater Composition and Connectivity of the Connecticut River Plume During Ambient Flood Tides

2021 ◽  
Vol 8 ◽  
Author(s):  
Michael M. Whitney ◽  
Yan Jia ◽  
Kelly L. Cole ◽  
Daniel G. MacDonald ◽  
Kimberly D. Huguenard
Keyword(s):  
Mixing Time ◽  
Growth Period ◽  
Tidal Currents ◽  
Surface Flow ◽  
River Plume ◽  
Tidal River ◽  
Initial Growth ◽  
Connecticut River ◽  
Tidal Period ◽  
Source Waters

The Connecticut River plume interacts with the strong tidal currents of the ambient receiving waters in eastern Long Island Sound. The plume formed during ambient flood tides is studied as an example of tidal river plumes entering into energetic ambient tidal environments in estuaries or continental shelves. Conservative passive freshwater tracers within a high-resolution nested hydrodynamic model are applied to determine how source waters from different parts of the tidal cycle contribute to plume composition and interact with bounding plume fronts. The connection to source waters can be cut off only under low-discharge conditions, when tides reverse surface flow through the mouth after max ambient flood. Upstream plume extent is limited because ambient tidal currents arrest the opposing plume propagation, as the tidal internal Froude number exceeds one. The downstream extent of the tidal plume always is within 20 km from the mouth, which is less than twice the ambient tidal excursion. Freshwaters in the river during the preceding ambient ebb are the oldest found in the new flood plume. Connectivity with source waters and plume fronts exhibits a strong upstream-to-downstream asymmetry. The arrested upstream front has high connectivity, as all freshwaters exiting the mouth immediately interact with this boundary. The downstream plume front has the lowest overall connectivity, as interaction is limited to the oldest waters since younger interior waters do not overtake this front. The offshore front and inshore boundary exhibit a downstream progression from younger to older waters and decreasing overall connectivity with source waters. Plume-averaged freshwater tracer concentrations and variances both exhibit an initial growth period followed by a longer decay period for the remainder of the tidal period. The plume-averaged tracer variance is increased by mouth inputs, decreased by entrainment, and destroyed by internal mixing. Peak entrainment velocities for younger waters are higher than values for older waters, indicating stronger entrainment closer to the mouth. Entrainment and mixing time scales (1–4 h at max ambient flood) are both shorter than half a tidal period, indicating entrainment and mixing are vigorous enough to rapidly diminish tracer variance within the plume.

Nonlinear internal wave packets in shelf zone

2019 ◽  
pp. 90-98
Author(s):  
Николай Иванович Макаренко ◽  
Валерий Юрьевич Ляпидевский ◽  
Данила Сергеевич Денисенко ◽  
Дмитрий Евгеньевич Кукушкин
Keyword(s):  
Internal Wave ◽  
Field Experiments ◽  
Fluid Layer ◽  
Wave Packets ◽  
Approximate Equation ◽  
Periodic Wave ◽  
Shelf Zone ◽  
Dispersive Waves ◽  
Basic Model ◽  
Non Linear

В рамках модели невязкой слабостратифицированной жидкости рассматривается длинноволновое приближение, описывающее нелинейные волновые пакеты типа кноидальных волн. Построены семейства асимптотических решений, одновременно описывающие периодические последовательности приповерхностных волн в форме впадин и придонных волн типа возвышений. Показано, что картины расчетных профилей качественно согласуются со структурами внутренних волн, наблюдавшихся авторами в натурных экспериментах в шельфовой зоне моря. The problem on nonlinear internal waves propagating permanently in shallow fluid is studied semi-analytically in comparison with the field data measured on the sea shelf. At present, the most studied in this context are nonlinear solitary-type waves generated due to the tidal activity over continental slope. This paper deals with periodic cnoidaltype wave packets considered in the framework of mathematical model of continuously stratified fluid. Basic model involves the Dubreil-Jacotin-Long equation for a stream function that results from stationary fully non-linear 2D Euler equations. The longwave approximate equation describing periodic non-harmonic waves is derived by means of scaling procedure using small Boussinesq parameter. This parameter characterizes slight stratification of the fluid layer with the density profile being close to the linear stratification. The fine-scale density plays important role here because it determines the non-linearity rate of model equation, so it permits to consider strongly non-linear dispersive waves of large amplitude. As a result, constructed asymptotic solutions can simulate periodic wave-trains of sub-surface depression coupled with near-bottom wavetrains of isopycnal elevation. It is demonstrated that calculated wave profiles are in good qualitative agreement with internal wave structures observed by the authors in the field experiments performed annually during 2011-2018 in expeditions on the shelf of the Japanese sea.

Tidally generated high-frequency internal wave packets and their effects on plankton in Massachusetts Bay

1983 ◽  
Vol 41 (1) ◽  
pp. 65-112 ◽  
Author(s):  
Loren R. Haury ◽  
Peter H. Wiebe ◽  
Marshall H. Orr ◽  
Melbourne G. Briscoe
Keyword(s):  
Internal Wave ◽  
High Frequency ◽  
Wave Packets ◽  
Massachusetts Bay

scholarly journals Multi-temporal dynamics of suspended particulate matter in a macro-tidal river Plume (the Gironde) as observed by satellite data

2018 ◽  
Vol 202 ◽  
pp. 172-184 ◽  
Author(s):  
Sorin Constantin ◽  
David Doxaran ◽  
Anna Derkacheva ◽  
Stéfani Novoa ◽  
Héloïse Lavigne
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Satellite Data ◽  
Temporal Dynamics ◽  
River Plume ◽  
Tidal River ◽  
Suspended Particulate ◽  
Multi Temporal

scholarly journals Potential of High Spatial and Temporal Ocean Color Satellite Data to Study the Dynamics of Suspended Particles in a Micro-Tidal River Plume

2016 ◽  
Vol 8 (3) ◽  
pp. 245 ◽  
Author(s):  
Anouck Ody ◽  
David Doxaran ◽  
Quinten Vanhellemont ◽  
Bouchra Nechad ◽  
Stefani Novoa ◽  
...  
Keyword(s):  
Satellite Data ◽  
Ocean Color ◽  
Suspended Particles ◽  
River Plume ◽  
Tidal River
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