Vertical land motion due to present-day ice loss from Greenland’s and Canada’s peripheral glaciers

Greenland's bedrock responds to the ongoing loss of ice mass with an
elastic vertical land motion (VLM) that is measured by Greenland's
GNSS Network (GNET). The measured VLM also contains other contributions,
including the long-term viscoelastic response of the Earth to previous
deglaciation. Greenland’s ice sheet (GrIS) is producing the most
significant contribution to the total VLM. The contribution of peripheral
glaciers (PGs) from both Greenland (GrPGs) and Arctic Canada (CanPGs) has
not been carefully accounted for in the GNSS time series analysis. This is
a significant concern, since GNET stations are often closer to PGs than to
the ice sheet.  We find that PGs produce significant elastic
rebound, especially in North and East Greenland. Across these regions, the
PGs result in up to 37% of the elastic rebound. For a few stations in the
North, the VLM from PGs is larger than the GrIS one.