The 2013 Lushan Earthquake in China Tests Hazard Assessments

摘要: Online Material: Earthquake hazard map; figures showing geodynamic and elastic block models; table of M s>6 earthquakes used in the study. Following devastating 2008 Wenchuan earthquake that ruptured central–northern segments Longmenshan fault Sichuan, China, many studies assessed its impact on other major faults this region (e.g., Parsons et al. , 2008; Toda 2008). On 20 April 2013, w 6.6 Lushan southern segment fault, allowing these assessments to be tested. The ( w 7.9) came as a surprise, because zone, which separates growing Tibetan Plateau from rigid Sichuan basin (Fig. 1), slips slowly (less than 3  mm/yr; Shen 2009); with only moderate seismicity (Burchfiel Wang 2010). The earthquake‐hazard map by Global Seismic Hazard Assessment Program shows entire zone being relatively safe, shown ![Graphic][1] Figure S1 (available electronic supplement paper). Figure 1. Topography (color contours), (lines), (dots) eastern basin. Gray dots, historic events; red instrumentally recorded beach ball, plane solution aftershock sequence are light blue; those for 2013 dark blue. Epicenters China Data Center (http://data.earthquake.cn/data, last accessed 2013). Inset location region. The same cannot said earthquake, occurred morning … [1]: /embed/inline-graphic-1.gif