[학위논문] 발파자료와 지진자료를 이용한 한반도의 상부지각 전단파 토모그라피

...km/s at the surface to 3.2 km/s at 1 km depth followed by a gradual increase to 3.2 km/s at 3~4 km depth and then a very slow increase to 3.5 km/s at 6~7 km depth the Gyeongsang basin shows the steepest velocity gradient between 2~ 3 km depth. The depth of the Gyeongsang basin inferred from the steepest velocity gradient in the vertical velocity sections is estimated at ~ 3 km while for the small basins...