BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Rebecca Jackson (Rutgers University) DTSTART:20201007T130000Z DTEND:20201007T140000Z DTSTAMP:20260423T021412Z UID:BAS-PO/3 DESCRIPTION:Title: M elting and mixing at the submarine termini of tidewater glaciers\nby R ebecca Jackson (Rutgers University) as part of BAS Polar Oceans Seminar\n\ n\nAbstract\nAround the globe\, glaciers and ice sheets are shrinking and contributing to sea level rise. Ocean warming has been implicated as a dri ver of glacier retreat\, with submarine melting as the presumed link. Howe ver\, at the termini of tidewater glaciers\, we lack observations of subma rine melting or the oceanic processes that control melt. Instead\, many st udies rely on untested theory and parameterizations to estimate submarine melt rates. These frameworks often hinge on buoyant plumes\, whose small-s cale dynamics can modulate both the ocean’s impact on the glacier via su bmarine melting and the glacier’s impact on the ocean via buoyancy forci ng. In this talk\, I will present data collected near the terminus of LeCo nte Glacier\, Alaska to probe the standard theory for plume-driven melt. I n the first half\, I will present surveys from autonomous kayaks that reve al ubiquitous meltwater intrusions along the terminus and suggest a mechan ism to explain melt rates that are significantly higher than standard theo ry predicts. In the second half\, the bulk fluxes of submarine melt and su bglacial discharge are evaluated across a wide range of conditions in six field campaigns to test the theoretical relationship between these two sou rces of freshwater. Modifications to the standard melt parameterizations a re explored\, in an effort to work towards an updated representation of me lt in ocean-glacier models.\n LOCATION:https://researchseminars.org/talk/BAS-PO/3/ END:VEVENT END:VCALENDAR