Submarine Mass Movement on the Ebro Slope

Mass movement is an important process controlling the Quaternary sedimentary structure of the Ebro continental slope. Seismic indicates that about 37% of the slope surface is affected by mass movement features, which are variable in distribution, type, size and morphology. Physical and geotechnical properties define two areas: upper slope and the lower slope. The geotechnical modelling only explains certain aspects of mass-movement features, but it is insufficient to explain their variability. In order to have a good knowledge of geotechnical and sedimentary characteristics of the area and a good approach to a future mapping of instability hazard it is required study individually each depositional environment and failure event.