Where would we be without Espen? I'm repeatedly grateful for you presence on these threads.
This calving broke up any consolidation/freezing-together of the debris (ice melange) floating in the fjord, so there isn't much winter left to form much of a buttress. Given how active this glacier is, though, I'm not sure any buttress has been much of a deterrent to calving. (From what I've read elsewhere, there appears to be different opinions as to how effective sea ice buttressing is for Greenland's glaciers.)