To find out the combined effect of seismic action, seepage, and sandy and argillaceous interlayers on the seabed slope stability, the safety factors of seabed slopes, which include sandy and argillaceous interlayers, under different hydraulic gradients and seismic loads, were calculated using the geotechnical simulation software Geo-Studio 2012. Results demonstrate that both seismic action and seepage exert significant impacts...

High-resolution multibeam bathymetric enables detailed morphological investigation of the area of Manila Trench on the northeastern South China Sea margin, where twenty-three cyclic steps are observed. The identified cyclic steps can be further divided into two groups (Types A and B), namely, thirteen net-erosional and ten net-depositional cyclic steps, based on their sizes and relative locations. Type A cyclic steps occur dow...