“Langmuir Turbulence”的意思、由来-开放百科全书

In fluid dynamics, and oceanography, the term Langmuir Turbulence refers to a turbulent flow with coherent Langmuir circulation structures that exist and evolve over a range of spatial and temporal scales.^[1] These structures arise through an interaction between the ocean surface waves and the currents.

In the upper ocean Langmuir circulations are a special case where the turbulent structures exhibit a dominant cell size. In general it is expected that Langmuir turbulence is a global ocean phenomenon and not confined to gentle wind conditions or shallow water ways (as with most observations of Langmuir circulation).^[2]

An important consequence of the Langmuir turbulence are deeply penetrating jets.^[3] These features occur between counter-rotating Langmuir circulations and can inject turbulent kinetic energy to depths well below the depth scale for the surface waves (Stokes drift depth scale). ^[4] Langmuir turbulence could have an important impact on our understanding of climate.^[2] In particular, Langmuir turbulence could affect the global ocean's sea surface temperature as the deeply penetrating Langmuir jets modify the depth of the ocean mixed layer.

See also

Notes

1. ^{{citation | last1=McWilliams | first1=J. | last2=Sullivan |first2=P. | last3=Moeng | first3=C. | year=1997 | title=Langmuir turbulence in the ocean| journal=Journal of Fluid Mechanics | volume=334 | pages=1–30 | doi=10.1017/S0022112096004375 }}
2. ^¹{{citation |last1=Belcher |first1=S.E. |last2=Grant|first2=A.L.M.|last3=Hanley|first3=K.E.|last4=Fox-Kemper|first4=B.|last5=Van Roekel |first5=L.|last6=Sullivan |first6=P.P.|last7=Large |first7=W.G. |last8=Brown |first8=A. |last9=Hines |first9=A. |last10=Calvert |first10=Daley |last11=Rutgersson |first11=Anna |last12=Pettersson |first12=Heidi |last13=Bidlot |first13=Jean-Raymond |last14=Janssen |first14=Peter A. E. M. |last15=Polton |first15=Jeff A. |year=2012 |title=A global perspective on Langmuir turbulence in the ocean surface boundary layer |journal=Geophysical Research Letters |volume=39 |doi=10.1029/2012GL052932 |issue=18 |pages= |url=http://centaur.reading.ac.uk/29357/1/A%20global%20perspective%20on%20Langmuir%20turbulence%20in%20the%20ocean%20surface.pdf}}
3. ^{{citation | last2=Belcher | first2=S.E. |last1=Polton |first1=J.A. |title=Langmuir Turbulence and deeply penetrating jets in an unstratified mixed layer |journal=Journal of Geophysical Research |volume=112 |pages=1–11| doi=10.1029/2007JC004205 |issue=C9 |year=2007}}
4. ^{{citation |last1=Sinha |first1=N. |last2=Tejada-Martinez|first2=A.E.|last3=Akan|first3=C.|last4=Grosch|first4=C.E.|year=2015 |title=Toward a K-Profile Parameterization of Langmuir Turbulence inShallow Coastal Shelves|journal=Journal of Physical Oceanography |volume=45 |doi=10.1175/JPO-D-14-0158.1 |pages= 2869–2895|url=https://journals.ametsoc.org/doi/pdf/10.1175/JPO-D-14-0158.1}}