Slope failure includes all types of failures in slopes, including falls, slides, avalanches, flows, and slumps in both soil and rock. Failures caused by liquefaction are excluded from this study. Earthquake induced slope failures are defined as those caused directly or triggered by earthquakes. The majority of earthquake induced slope failures will occur during earthquake shaking. However, some slopes weakened by earthquake shaking may fail days or weeks after the earthquake. Aftershocks or high intensity and/or long duration rainfall may trigger such failures.Refer to Publication WRC/PP-T-95/06 for accompanying notes.
