Earthquake Ruptures in China: Testing Earthquake Recurrence Models

Earthquake recurrence models are important to assess seismic hazard but remain poorly constrained due to the scarcity of data. In order to know which seismic recurrence models are useful, we investigated the eastern sections of the Altyn Tagh fault in central Asia, where the archive of earthquake ruptures are unmatched well preserved. We used high-resolution images to reconstruct co-seismic/accumulative offsets. We applied geological dating techniques (10Be cosmogenic, 14C and OSL) to constrain the timing of the events. These methods, along with sub-surface trenching, helped us obtained key elements (timing and offsets) that are used to test seismic recurrence models.

Project Years: 

2015, 2016, 2017