Articles | Volume 22, issue 3
https://doi.org/10.5194/npg-22-349-2015
https://doi.org/10.5194/npg-22-349-2015
Research article
 | 
30 Jun 2015
Research article |  | 30 Jun 2015

Stress states and moment rates of a two-asperity fault in the presence of viscoelastic relaxation

M. Dragoni and E. Lorenzano

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Short summary
The paper presents new analytical solutions for both the coseismic slip and the interseismic evolution of a fault with two asperities of different strengths. It enlightens the relationship between the state of the fault before a seismic event and the number and sequence of slipping modes in the event. It shows that the knowledge of the source function of a seismic event constrains the subsequent evolution of the system. The model is applied to the fault that generated the 1964 Alaska earthquake.