Echoes of Wenchuan: magnitude 6.6 earthquake shakes Sichuan province in west China.


A tectonic map of the Longmenshan thrust system. The accompanying cross-sections of other faults in the area show modelled increases (red) and decreases (blue) in permanent stress resulting from the 2008 M 7.9 Wenchuan earthquake (white star). Orange boxes highlight the southern segment of the Wenchuan Fault and the Ya’an thrust – both possible sources of the latest quake, whose rough location is shown by the orange circle. Modified from Parsons et al., 2008

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