Fig. 2: Morphology of the Iselin Bank submarine landslide complex, eastern Ross Sea margin.
From: Climate-controlled submarine landslides on the Antarctic continental margin
a Southern submarine landslide region. Hillshaded multibeam echosounder data gridded at 30-m cell size overlying IBCSO v2 regional bathymetry90. Contours are spaced at 50 m and labelled every 500 m. White dashed lines locate submarine landslide scarps on the slope and rise. Main scarps S1 and S2 are shown by red dashed lines. Thick grey lines indicate contourite mounds’ crest. Black solid lines show locations of seismic lines IT17RS301, IT17RS302, IT17RS303, IR17RS315, IT17RS316 and BGR80-009A. Yellow dashed line indicates location of inset slope profile y-y’ with position of S1 and S2 shown by white asterisks. White box shows location of Fig. 2b. Yellow triangle shows position of IODP Site U1523. MTD is mass-transport deposit. b Perspective view of hillshaded multibeam echosounder data gridded at 30-m cell size. Contours are spaced at 50 m and labelled every 500 m. Black line locates seismic profile IT17RS301. Yellow triangle locates IODP Site U1523. White dashed lines show scarp locations. White arrows highlight scarp evacuation paths on the slope and rise. c Northern submarine landslide region. Hillshaded multibeam echosounder data gridded at 30-m cell size overlying IBCSO v2 regional bathymetry90. Contours are spaced at 50 m and labelled every 500 m. White dashed lines locate submarine landslide scarps on the slope and rise. Yellow dashed line indicates location of inset slope profile x-x’. White asterisks show scarps included in submarine landslide volume calculation.
