Fig. 3

Distribution of estimated stress field in the eastern margin of the Japan Sea (EMJS). Each result of stress field is plotted, \(2^\circ \times 2^\circ\), at the center of each sub-area. The results are shown using lower hemisphere projections. Red, green, and blue circles denote the optimal solution for the \({\sigma }_{1}\), \({\sigma }_{2}\), and \({\sigma }_{3}\), respectively. Small pastel red, green, and blue without outlines denote the 95% confidence ranges for the \({\sigma }_{1}\), \({\sigma }_{2}\), and \({\sigma }_{3}\), respectively. The black line and gray fan denote the optimal solution and 95% confidence ranges for the \({S}_{Hmax}\) orientation, respectively