Debris flows of the mountain massif of Hjorthfjellet and Adventtoppen, Svalbard: Implications for gullies on mountains in the Argyre basin, Mars - Reiss, Dennis; Hiesinger, Harald; Zanetti, Michael; Hauber, Ernst; Johnsson, Andreas; Carlsson, Ella; Raack, J.; Olvmo, Mats; Johansson, Henrik; Fredricksson, S.; Schmidt, H.; McDaniel, Steve; et al. (2008)