Elastic response on present day ice variations in Svalbard from GNSS
Recent glacier loss in the Svalbard Archipelago has led to a dramatic deformation of the Earth’s crust, for example up to 1 cm per year land uplift in Ny Ålesund. With the high precision of dual-frequency GNSS instruments, variations in the uplift can be measured and monitored and it may even be possible to measure seasonal variations of the earth surface, mainly due to the variations in the weight of ice and snow.
Two permanent GNSS stations are currently operational in the Ny Ålesund region. In this project, raw GNSS data should be post-processed into a time series of positions and elevations.
We will look within this time series for both multi-annual uplift signal as well as seasonal variations and further relate them to the response on variations in the ice and snow cover estimated from the most recent large-scale models.