Subglacial permafrost evidencing re-advance of the Greenland Ice Sheet over frozen ground
Timo Ruskeeniemi, Jon Engström, Jukka Lehtimäki, Heikki Vanhala, Kimmo Korhonen, Anne Kontula, Lillemor Claesson Liljedahl, Jens-Öve Näslund, Rickard Pettersson
Abstract