4:45 PM - 5:00 PM
[ACG38-18] The riddle of the North-East Greenland Ice Stream; simulations testing if a large ancient volcanic area, under 3 km of ice, triggers the greatest flow of ice on Greenland
Keywords:Greenland, ice, simulation, Climate change, glacier, Arctic
We present preliminary results for simulations with the ice sheet model SICOPOLIS that include a geothermal warm anomaly under the ice sheet in the proposed volcanic region. Results so far show how the geothermal anomaly can form an area of basal meltwater that spreads to the coast following the path of NEGIS. Lubrication from this water increases the movement of basal ice towards the coast and so raises the possibility that the hot spot contributes to the formation of NEGIS. If this can be confirmed a significant problem in Greenland ice sheet modeling could potentially be alleviated. We continue to test different configurations and will present the latest results and implications at the conference.