In the first step, we search for the optimum rheology model by fitting vertical component with viscoelastic relaxation model, and consider residual is caused by an afterslip. The continuous GPS data in northern Sumatra suggest that there are multiple physical mechanisms controls the postseismic deformation, that is afterslip and viscoelastic relaxation. (4) GPS data have never been used in analyzing postseismic deformation.

(3) Continuous GPS measurements provide a good control on both horizontal and vertical components. (2) GPS measurements started a few months after the main shock, providing information of early postseismic deformation after the 2004 SAE. AGNeSS data are important because of the following reasons: (1) The network is located in the near-field of the main slip patch of the 2004 SAE. In this study, we tackle this problem by taking GPS data in northern Sumatra, Aceh GPS Network for Sumatran Fault System (AGNeSS), into account.

Andaman Islands only) of observations without investigating postseismic deformation data in northern Sumatra, which is close to the largest coseismic slip rupture of 2004 SAE. Also, previous studies use only a certain part (e.g.

Previous study of postseismic deformation after the 2004 earthquake reached different conclusions, which attributed to different assumption on the postseismic deformation mechanisms. Global Positioning System (GPS) data in northern Sumatra, Andaman Islands and Thailand provides an opportunity to understand the postseismic deformation associated with the 2004 Sumatra-Andaman earthquake. Analysis of afterslip and viscoelastic relaxation following the 2004 Sumatra-Andaman earthquake from GPS observations in northern Sumatra

Expert gps 6.17 crack