A snapshot of turbulence in the Northeastern Magellan Strait

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dc.contributor.authorLozovatsky, Iossif
dc.contributor.authorEscauriaza, Cristian
dc.contributor.authorSuarez, Leandro
dc.contributor.authorFernando, Harindra J. S.
dc.contributor.authorWilliams, Megan
dc.contributor.authorCoppersmith, Ronald Scott
dc.contributor.authorMayorga, Nicolas
dc.date.accessioned2025-01-20T16:18:20Z
dc.date.available2025-01-20T16:18:20Z
dc.date.issued2024
dc.description.abstractFirst-ever measurements of the turbulent kinetic energy (TKE) dissipation rate in the northeastern Strait of Magellan (Seg-unda Angostura region) taken in March 2019 are reported here. At the time of microstructure measurements, the magnitude of the reversing tidal current ranged between 0.8 and 1.2 ms(-1). The probability distribution of the TKE dissipation rate in the water interior above the bottom boundary layer was lognormal with a high median value epsilon(MS)(med) = 1.2x10(-6) Wkg(-1). Strong vertical shear, (1-2)x10(-2) s(-1), in the weakly stratified water interior ensued a sub-critical gradient Richardson number Ri < 10(-1) - 10(-2). In the bottom boundary layer (BBL), the vertical shear and the TKE dissipation rate both decreased exponentially with the distance from the seafloor xi, leading to a turbulent regime with an eddy viscosity K-M similar to 10(-3) m(2)/s, which varied with time and location, while being independent of the vertical coordinate in the upper part of BBL (for xi > similar to 2 meters above the bottom).
dc.fuente.origenWOS
dc.identifier.doi10.1007/s10236-024-01613-y
dc.identifier.eissn1616-7228
dc.identifier.issn1616-7341
dc.identifier.urihttps://doi.org/10.1007/s10236-024-01613-y
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90642
dc.identifier.wosidWOS:001221107900001
dc.issue.numero6
dc.language.isoen
dc.pagina.final469
dc.pagina.inicio459
dc.revistaOcean dynamics
dc.rightsacceso restringido
dc.subjectStrait of Magellan
dc.subjectSegunda Angostura
dc.subjectTidal Currents
dc.subjectTurbulence
dc.subjectBBL
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleA snapshot of turbulence in the Northeastern Magellan Strait
dc.typeartículo
dc.volumen74
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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