Erosion of surface ice from groundwater upwelling No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Knut Kielland talks about the role of warmer groundwater in the erosion of surface ice. Process Observed: Open Water (Hidden)Groundwater Upwelling Date Process Observed: Wednesday, March 23, 2011 Galleries: Upper end of Yukon Slough Gallery