While not of immediate concern w.r.t. SLR the linked reference discusses the evolution of seasonal supraglacial meltwater lakes on Langhovde Glacier, Dronning Maud Land, East Antarctica (see first image), between 2000 and 2013, and the continued evolution of such supraglacial East Antarctic lakes could eventually feed the hydrofracturing and cliff failure mechanisms identified by DeConto & Pollard (see second image) by, or shortly after, 2100:
Emily S. Langley, Amber A. Leeson, Chris R. Stokes & Stewart S. R. Jamieson (8 August 2016), "Seasonal Evolution of Supraglacial Lakes on an East Antarctic Outlet Glacier", Geophysical Research Letters, DOI: 10.1002/2016GL069511http://onlinelibrary.wiley.com/doi/10.1002/2016GL069511/full
Abstract: "Supraglacial lakes are known to influence ice melt and ice flow on the Greenland ice sheet and potentially cause ice shelf disintegration on the Antarctic Peninsula. In East Antarctica, however, our understanding of their behaviour and impact is more limited. Using >150 optical satellite images and meteorological records from 2000-2013, we provide the first multi-year analysis of lake evolution on Langhovde Glacier, Dronning Maud Land (69°11'S, 39°32'E). We observe 7,990 lakes and 855 surface channels up to 18.1 km inland (~ 670 m a.s.l.) from the grounding line, and document three pathways of lake demise: (i) refreezing, (ii) drainage to the en-/sub-glacial environment (on the floating ice), and (iii) overflow into surface channels (on both the floating and grounded ice). The parallels between these mechanisms, and those observed on Greenland/the Antarctic Peninsula, suggest that lakes may similarly affect rates and patterns of ice melt, ice flow and ice shelf disintegration in East Antarctica."https://www.washingtonpost.com/news/energy-environment/wp/2016/08/17/these-stunning-blue-lakes-just-gave-us-a-new-reason-to-worry-about-antarctica/?utm_term=.09ab23913d58
Extract: "In a new study, scientists who study the largest ice mass on Earth — East Antarctica — have found that it is showing a surprising feature reminiscent of the fastest melting one: Greenland.
More specifically, the satellite-based study found that atop the coastal Langhovde Glacier in East Antarctica’s Dronning Maud Land, large numbers of “supraglacial” or meltwater lakes have been forming — nearly 8,000 of them in summer between the year 2000 and 2013. Moreover, in some cases, just as in Greenland, these lakes appear to have then been draining down into the floating parts of the glacier, potentially weakening it and making it more likely to fracture and break apart.
This is the first time that such a drainage phenomenon has been observed in East Antarctica, the researchers say — though it was previously spotted on the warmer Antarctic Peninsula and was likely part of what drove spectacular events there like the shattering of the Larsen B ice shelf in 2002.
When glaciers lose large parts of their ice shelves, they become less stable and flow faster towards the ocean, contributing to an increased rate of global sea level rise.
“The size of the lakes … are probably not big enough to do much at present, but if climate warming continues in the future, we can only expect the size and number of these lakes to increase. So that’s what we’re looking at,” Jamieson said.
He added that the mid-sized Langhovde Glacier is not special when it comes to East Antarctic meltwater lakes — other parts of coastal Antarctica see them too. The reason the study focused on Langhovde is simply that there was a lot of satellite and temperature data available.
Richard Alley, a glaciologist at Penn State who was not involved in the study, noted in an email comment that seeing some Antarctic surface melt is not too surprising. “Across many sensors and studies, there is summertime melting on the surface of Antarctica around the edges, and sometimes in some places extending farther inland than you might think,” he said.
However, Alley continued, we should be very concerned about such melting increasing. Alley referred to a study from earlier this year, by Rob DeConto of the University of Massachusetts, Amherst, and David Pollard of Penn State, which found that surface melt is one factor that could greatly speed total Antarctic ice loss, by increasing the tendency for “hydrofracture” to occur, in which meltwater helps to break apart ice shelves."