Fig. 4From: High-resolution shallow crustal shear wave velocity structure of Anyuan mining area and its adjacent region in Jiangxi Province, ChinaGroup velocity dispersion curves extract from the EGFs. The black thin solid lines denote the selected group velocity dispersion curves and the gray thin solid lines denote the removed dispersion curves. The black thick solid line shows the number of the dispersion at each period and the thick gray dashed line presents the average group velocity dispersion curveBack to article page