Origin of pockmarks and chimney structures on the flanks of the Storegga Slide, offshore Norway - Paull, C.; Ussler III, W.; Holbrook, W.S.; Hill, T.M.; Keaten, R.; Mienert, Jurgen; Haflidason, H.; Johnson, J.E.; Winters, W.J.; Lorenson, T.D. (Geo-Marine Letters, 2008)