Morphology of small-scale submarine mass movement events across the northwest United Kingdom

摘要: Abstract A review of multibeam echo sounder (MBES) survey data from five locations around the United Kingdom northwest coast has led to identification a total 14 separate subaqueous mass movement scars and deposits within fjords (sea lochs) coastal inlets mainland Scotland, channels between islands Inner Hebrides. In these areas, Quaternary sediment deposition was dominated by glacial glaciomarine processes. Analysis morphometric parameters each submarine revealed that they fall into four distinct groups landslides; Singular Slumps, Translational, Multiple Single-Type, Complex (translational & rotational) failures. The Slump Group includes discrete, individual slumps exhibit no evidence modification through merging several scars. Translational comprise single slide displays characteristics associated with translational (planar) failure multiple events. Single-Type incorporates displayed features consistent amalgamation events same type (e.g. debris flows or slumps). Finally, comprises landslides exhibited complex styles failures, including both rotational mechanisms controlling slide. movements this dataset are then discussed in relation global fjordic nearshore settings, slope trigger environments described tentative links database, where appropriate. It is acknowledged additional MBES needed not only expand but also order create more statistically robust study. However, initial study provides basis for much wider investigation correlations their parameters.