Submesoscale processes and mixing

Gula, Jonathan; Taylor, John R.; Shcherbina, Andrey Y.; Mahadevan, Amala

doi:10.1016/b978-0-12-821512-8.00015-3

Cited by 31 publications

(40 citation statements)

References 229 publications

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“…Below we very briefly consider some of these processes. See Thomas et al (2008), McWilliams (2016, and Gula et al (2022) for in-depth reviews of submesoscale dynamics.…”

Section: Submesoscale Mixingmentioning

confidence: 99%

Anthropogenic Mixing in Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

et al. 2022

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The offshore wind energy sector has rapidly expanded over the past two decades, providing a renewable energy solution for coastal nations. Sector development has been led in Europe, but is growing globally. Most developments to date have been in well-mixed, i.e., unstratified, shallow-waters near to shore. Sector growth is, for the first time, pushing developments to deep water, into a brand new environment: seasonally stratified shelf seas. Seasonally stratified shelf seas, where water density varies with depth, have a disproportionately key role in primary production, marine ecosystem and biogeochemical cycling. Infrastructure will directly mix stratified shelf seas. The magnitude of this mixing, additional to natural background processes, has yet to be fully quantified. If large enough it may erode shelf sea stratification. Therefore, offshore wind growth may destabilize and fundamentally change shelf sea systems. However, enhanced mixing may also positively impact some marine ecosystems. This paper sets the scene for sector development into this new environment, reviews the potential physical and environmental benefits and impacts of large scale industrialization of seasonally stratified shelf seas and identifies areas where research is required to best utilize, manage, and mitigate environmental change.

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“…Below we very briefly consider some of these processes. See Thomas et al (2008), McWilliams (2016, and Gula et al (2022) for in-depth reviews of submesoscale dynamics.…”

Section: Submesoscale Mixingmentioning

confidence: 99%

Anthropogenic Mixing in Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Below we very briefly consider some of these processes. See Thomas et al (2008);McWilliams (2016); Gula et al (2021) for in-depth reviews of submesoscale dynamics.…”

Section: Submesoscale Mixingmentioning

confidence: 99%

Anthropogenic Mixing of Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

Dorrell,

Lloyd,

Lincoln

et al. 2021

Preprint

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The offshore wind energy sector has rapidly expanded over the past two decades, providing a renewable energy solution for coastal nations. Sector development has been led in Europe, but is growing globally. Most developments to date have been in well-mixed, i.e. unstratified, shallow-waters near to shore. Sector growth is, for the first time, pushing developments to deep water, into a brand new environment: seasonally stratified shelf seas. Seasonally stratified shelf seas, where water density varies with depth, have a disproportionately key role in primary production, marine ecosystem and biochemically cycles. Infrastructure will directly mix stratified shelf seas. The magnitude of this mixing, additional to natural background processes, has yet to be fully quantified. If large enough it may erode shelf sea stratification. Therefore, offshore wind growth may destabilize and fundamentally change shelf sea systems. However, enhanced mixing may also positively impact some marine ecosystems. This paper sets the scene for sector development into this new environment, reviews the potential physical and environmental benefits and impacts of large scale industrialization of seasonally stratified shelf seas and identifies areas where research is required to best utilise, manage and mitigate environmental change.

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“…The new high-resolution satellite observation capabilities are revealing submesoscale sea surface features at spatial scales of 100 m -1.1 SUBMESOSCALE SEA SURFACE DYNAMICS 10 km and time scales of hours to weeks. Invariably, the new satellite imagery reveals a plethora of coupled dynamical phenomena, including currents, spiral filaments, flotsam patterns, jets and fronts, some of which are detected indirectly through sea surface temperature, salinity or colour, in addition to the imagery [3,8,11].…”

Section: Introduction 1submesoscale Sea Surface Dynamicsmentioning

confidence: 99%

Coupling of waves to sea surface currents via horizontal density gradients

Holm¹,

Ruiao²,

D.³

2022

Preprint

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The mathematical models and numerical simulations reported here are motivated by satellite observations of horizontal sea surface fluid motions that are closely coordinated with the vertical motion of waves or, after an approximation, an envelope of rapidly oscillating waves. This coordination of fluid movements with wave envelopes tends to occur when strong horizontal buoyancy gradients are present. The nonlinear models of this coordinated movement presented here may provide future opportunities for the optimal design of satellite imagery that could simultaneously capture the dynamics of both waves and currents directly.The models derived here appear first in their unapproximated form, then again with a slowly varying envelope (SVE) approximation using the WKB approach.The WKB wave-current-buoyancy interaction model derived here for a free surface with horizontal buoyancy gradients indicates that the mechanism for these correlations is the ponderomotive force of the slowly varying envelope of rapidly oscillating waves acting on the surface currents via the horizontal buoyancy gradient. In this model, the buoyancy gradient appears explicitly in the WKB wave momentum, which in turn generates density-weighted potential vorticity whenever the buoyancy gradient is not aligned with the wave-envelope gradient.

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Submesoscale processes and mixing

Cited by 31 publications

References 229 publications

Anthropogenic Mixing in Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

Anthropogenic Mixing in Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

Anthropogenic Mixing of Seasonally Stratified Shelf Seas by Offshore Wind Farm Infrastructure

Coupling of waves to sea surface currents via horizontal density gradients

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