Geography, topography and rivers of the earthquake region (Ouimet,) (with permission from W Ouimet). The surface rupture associated with the Wenchuan earthquake by Xu et al. () (solid lines denote inferred rupture) and aftershocks greater than M4.5 are also included. The Yingxiu, Beichuan and Pengguan faults are labeled. Four landslides mentioned in this paper are marked, and SFB strong-motion station is shown.