Afterslip distribution of large earthquakes with viscoelastic and poroelastic responses

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We developed a new method for estimation of afterslip distribution with viscoelastic and poroelastic responses. We consider viscoelastic responses not only due to coseismic slip but also due to afterslip in the preceding intervals. Poroelastic responses are included in the model as difference between drain-undrain responses. Results of application to two earthquakes show that large different slip distributions are obtained between our new model and elastic only model. This means that viscoelasic and poroelasic responses are needed for analysis of afterslip distribution.