A 400 km (250 mi) stretch of coastline drotimate suggested that the Pacific plate may have moved westward by up to 20 m (66 ft), and another early estimate put the amount of slippage at as much as 40 m (130 ft).
A 400 km (250 mi) stretch of coastline dropped vertically by 0.6 m (2.0 ft), allowing the tsunami to travel farther and faster onto land. One early estimate suggested that the Pacific plate may have moved westward by up to 20 m (66 ft), and another early estimate put the amount of slippage at as much as 40 m (130 ft).