{"id":24978,"date":"2026-02-11T02:39:35","date_gmt":"2026-02-11T01:39:35","guid":{"rendered":"https:\/\/www.mio.osupytheas.fr\/?p=24978"},"modified":"2026-02-14T19:10:25","modified_gmt":"2026-02-14T18:10:25","slug":"mio-sofia-allende-seminar","status":"publish","type":"post","link":"https:\/\/www.mio.osupytheas.fr\/en\/seminaire-mio-sofia-allende\/","title":{"rendered":"MIO Seminar - Sofia Allende - \u203c\ufe0fReport\u00e9 at ult\u00e9rieure\u203c\ufe0f"},"content":{"rendered":"
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The seminar, initially scheduled for 20 February 2026, has been postponed to a later date.<\/span><\/h3>

Sofia Allende<\/strong><\/a>, a post-doctoral researcher at the IRPHE, invited by Baptiste N\u00e9el (MIO), will give a seminar on Friday 20 February 2026 <\/strong>\u00e0 13h00<\/strong>, at the OCEANOMED Amphitheatre, on the theme : Melting dynamics and mixing layer growth near the ice-ocean interface.<\/em><\/p>

\u00a0<\/h4>

Abstract<\/strong><\/h4>

At the ice-ocean interface, one of the key physical processes is double-diffusive convection, a mechanism describing the convective mixing of fluids driven by the interplay between salinity and temperature gradients. This phenomenon is thought to play a critical role in regulating the salt and heat balance in polar regions but remains poorly parameterized in global climate models. I will here describe recent numerical work using highly resolved simulations, where we study the melt-driven growth of temperature and salinity mixing layers beneath a rigid ice interface. By varying the ambient salinity and the salt diffusivity, we identify a transition from convective to diffusion-dominated dynamics close to the interface, which decouples the melting dynamics from the turbulent transport. We demonstrate that the mixing layer grows super-diffusively in all regimes, thereby challenging the commonly assumed picture of a fully diffusive regime at high salinity. These results highlight potential limitations of diagnostics based on fixed concentration thresholds in oceanographic applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Le s\u00e9minaire, initialement pr\u00e9vu le 20 f\u00e9vrier 2026, a \u00e9t\u00e9 report\u00e9 \u00e0 une date ult\u00e9rieure. Sofia Allende, post-doctorante \u00e0 l’IRPHE, invit\u00e9e par Baptiste N\u00e9el (MIO), donnera un s\u00e9minaire le vendredi […]<\/p>\n","protected":false},"author":319,"featured_media":24990,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17,1,39],"tags":[],"class_list":["post-24978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites","category-seminaire-mio"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/posts\/24978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/users\/319"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/comments?post=24978"}],"version-history":[{"count":34,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/posts\/24978\/revisions"}],"predecessor-version":[{"id":25197,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/posts\/24978\/revisions\/25197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/media\/24990"}],"wp:attachment":[{"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/media?parent=24978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/categories?post=24978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/en\/wp-json\/wp\/v2\/tags?post=24978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}