Parametric modelling of the geometrical ice-ocean interaction in the Ekstroemisen grounding zone based on short time-series

Abstract

Due to the impact of ocean tide the Ekstroemisen (Ekstroem Ice Shelf, Antarctica) still shows vertical displacements at its assumed grounding line. These can reach amplitudes of 5 cm. The low tide amplitudes are smaller than the corresponding high tide amplitudes. This indicates that the ice body touches the bedrock during the low tides. An elastic feedback of the ice body can be observed as little as 1 km behind the assumed grounding line. The maximum vertical displacements can still reach 1 cm.