Sediment slides in multibeam bathymetry of Smeerenburgfjorden, NW Spitsbergen, Svalbard. (a) A 4.75 km long section of Smeerenburgfjorden showing slides and scars on fjord walls and runout of sometimes blocky debris onto the otherwise relatively smooth fjord floor. Acquisition system Kongsberg EM1002. Frequency 97 kHz. Grid-cell size 2 m. (b) An area of composite slides on the east side of the fjord. (c) Composite slides on the east side of the fjord, probably draped with a thin sediment cover. (d) Single slide on the western fjord wall with runout onto the fjord floor. (e) Cross- and long-profiles through the slide shown in (d). VE×75, ×50 and ×20 for x, y and z, respectively. (f) Shallow sub-bottom profile through the eastern slides shown in (a). VE×60. Acquisition system Edgetech 3300-HM. Frequency 1.5–12 kHz, 16-element transducer with 4 kW pulse. (g) Location of study area (red box; map from IBCAO v. 3.0).