EGU2020-6108
https://doi.org/10.5194/egusphere-egu2020-6108
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Intermittent freeze-melt pattern detected at the base of the Ronne Ice Shelf

Irena Vankova and Keith Nicholls
Irena Vankova and Keith Nicholls
  • British Antarctic Survey, Polar Oceans, Cambridge, United Kingdom of Great Britain and Northern Ireland

High salinity shelf water (HSSW) is a water mass that drives melting at the Ronne Ice Shelf, entering the sub ice shelf cavity at the western end of the ice front. To monitor the rate of ice shelf basal melting along the path of assumed HSSW inflow, a phase-sensitive radar (ApRES) was deployed and it sampled autonomously for over two years. Although the site is found to melt on average, the data show evidence of freezing occurring intermittently throughout the observed time period. Here we systematically investigate oceanographic processes that could give rise to these observations. Further, we address the question of whether ApRES can be used to quantify the rate of basal freezing.

How to cite: Vankova, I. and Nicholls, K.: Intermittent freeze-melt pattern detected at the base of the Ronne Ice Shelf, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6108, https://doi.org/10.5194/egusphere-egu2020-6108, 2020

This abstract will not be presented.