Impact of tides on calving patterns at Kronebreen, Svalbard – insights from three-dimensional ice dynamical modelling

Abstract. Understanding calving processes and their controls is of importance for reducing uncertainty in sea level rise estimates. The impact tidal fluctuations frontal melt on patterns has been researched through both modelling observational studies but remains uncertain may vary from glacier to glacier. In this study, we isolate various different impacts a terminus understand influence the timing events model Kronebreen, Svalbard, duration 1 month. addition, impose simplified parameterisation onto front order allow an undercut develop over course simulations. We find that show signal when there small or no undercut, but, after critical point, undercut-driven becomes dominant drowns out signal. However, relationship complex, large even with modelled undercut. sizes are then compared profiles, showing undercuts up ca. 25 m plausible more complex geometry being evident observations than captured model. These findings highlight interactions occurring at Kronebreen suggest further data work needed fully hierarchy calving.