Evolution of subsea permafrost landscapes in Arctic Siberia since the Late Pleistocene: a synoptic insight from acoustic data of the Laptev Sea - Rekant, P.; Bauch, H. A.; Schwenk, T.; Portnov, A.; Gusev, E.; Spiess, V.; Cherkashov, G.; Kassens, H. (arktos, 2015)