Size distribution law of earthquake-triggered landslides in different seismic intensity zones

Abstract. The Ms 8.0 Wenchuan earthquake in 2008 and 7.0 Lushan 2013 produced thousands of landslides the southern region Longmen Mountains China. We conducted field investigations analyzed remote sensing data to determine distribution law earthquake-triggered landslides. results show a strong negative power relationship between size frequency VII, VIII, IX seismic intensity zones, weak X zone, lognormal XI zone. Landslide density increases with increasing intensity. A sandpile cellular automata model was built under conceptual framework self-organized criticality theory simulate earthquake-induced Data from simulations demonstrate that, disturbance intensity, dynamical mechanism changes then distribution. Results shaking table experiments one-sided slope for peak ground acceleration (PGA) range 0.075–0.125 g, relation amount sand follows law. For PGA 0.15 0.25 obeys This verifies that abovementioned should be universal physical viewpoint may apply other areas. new perspective used guide development an inventory provide scientific basis their prediction.