Investigating Time Dependent Stress Changes Globally Following Large Earthquakes (M≥7)

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International Journal of Environment and Geoinformatics
Volume:8 Issue:3
Investigating Time Dependent Stress Changes Globally Following Large Earthquakes (M≥7)

Investigating Time Dependent Stress Changes Globally Following Large Earthquakes (M≥7)

Pages : 376-385

View : 35 | Download : 10

Publication Date : 2021-09-05

Article Type : Research Paper

Abstract :Triggered earthquakes can cause disproportionate damages depend on their magnitudes. In fact, there is a causal link between the spatial distribution of those events and the stress changes induced by the mainshock. Co-seismic stress loading is one of the key factors in determination of triggering mechanism. However, the time lags ranging hours to years and the stress diffusion over wider areas cannot be evaluated with the co-seismic process alone. In some cases, the stress interactions for long periods and larger areas can be attributed to post-seismic viscoelastic relaxations. In this study, M≥7 earthquakes from the Global Centroid Moment Tensor insert ignore into journalissuearticles values(GMCT); catalogue are modelled as dislocations to calculate shear stress changes on following earthquake nodal planes near enough to be triggered. The catalogue scanned for all other events insert ignore into journalissuearticles values(4.5 Keywords : Global CMT Catalogue, Coulomb Stress, Viscoelastic Relaxation, Omori Law

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