Explaining the complex spatio-temporal evolutions of aftershock sequences requires causation mechanisms beyond coseismic elasto-static Coulomb stress change. Therefore, the study of mechanisms which may transfer stresses in the postseismic phase is vital to our understanding of aftershocks and their associated hazard.
Specifically, my study is centred around the mechanism of aseismic afterslip - localized frictional sliding governed by velocity-strengthening rheologies around the fault-plane and particularly, beneath the seismogenic zone – and the extent to which the physical mechanism may drive and interact with aftershock sequences through stress redistribution in both space and time.
I have approached my research on an empirical level thus far, investigating the global relationship between aseismic afterslip and aftershock productivity and am now considering physical modelling (e.g. Coulomb stress change in the postseismic phase) and further statistical analysis to probe the relationship further.
Imperial College London
4 Oct 2014 → 29 Jun 2018
Award Date: 1 Aug 2018
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