BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Mainak Mondal (New York University Abu Dhabi) DTSTART:20210714T130000Z DTEND:20210714T140000Z DTSTAMP:20260423T021346Z UID:BAS-PO/22 DESCRIPTION:Title: Turbulent melting of a glacier front using high resolution simulations \nby Mainak Mondal (New York University Abu Dhabi) as part of BAS Polar Oc eans Seminar\n\n\nAbstract\nOver the past few years\, valuable new observa tions from the glacial front of Antarctica and Greenland using high-resolu tion turbulence profilers at the ice shelf borehole (Davis and Nicholls 20 19\; Kimura et al. 2015\; Begeman et al. 2018\; Jenkins et al. 2010) itera ted the importance of turbulent processes in controlling the melting and d issolution of the ice-ocean interface. Previous laboratory experiments (Mc Connochie et. al.\, 2015\,17\,18) and high-resolution numerical simulation s (Gayen et al.\, 2015\, Mondal et. al\, 2019\, Vreghdenhil et al.\, 2020 Couston et al.\,2021) also have extensively discussed the role of turbulen ce in the basal melting. My talk spans from turbulence-resolving scales u p to the full depth of a fjord. At the turbulence scale\, I investigated h ow the turbulent melting/freezing at the ice-interface is affected by ice- geometry\, surface-roughness\, ambient velocity shear and external subglac ial discharge using fluid-only Direct Numerical Simulations. At the large scale\, I investigated the dynamics of a subglacial discharge plume subjec ted to varying subglacial conduit size\, shape and distributions as well as 3d ice-geometry using the MITgcm plume model. These insights can help t o provide better estimations of the melting of the ice-face\, essential fo r more accurate projections of future sea-level rise.\n LOCATION:https://researchseminars.org/talk/BAS-PO/22/ END:VEVENT END:VCALENDAR