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Earth, Planets and Space
Figure 7 | Earth, Planets and Space

Figure 7

From: Stress state in the upper crust around the source region of the 1891 Nobi earthquake through shear wave polarization anisotropy

Figure 7

Relation between differential strain rate and normalized time delay. Plot of the differential strain rate observed by GPS (Sagiya et al. 2000) versus the average normalized time delay, δt n , at stations for which the angular difference between the average ϕ and the orientation of the principal compression axis of the strain rate is within 30° and the data number is greater than or equal to 3. Black, gray, and open circles are the data of this study, the combination of this study and Hiramatsu et al. (2010), and Hiramatsu et al. (2010), respectively. Each error bar shows a standard deviation of δt n at each station. The dashed line is the least squares fit to the data (δt n  = 34.4 × (differential strain rate)-0.81). Gray lines represent the definition of δt n and Δδt n in Equation 1.

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