Abstract
It has been five years since the occurrence of the 2011 Great East Japan Earthquake and Tsunami. The recovery of littoral system on Sendai Coast, Miyagi Prefecture is further investigated in this study. By adding two more years of shoreline position data extracted from aerial photographs and utilizing the Empirical Orthogonal Function (EOF) analysis, the recovery of littoral system of the coast can be revealed. Results indicate that the shoreline has not been in equilibrium condition yet. Shoreline positions at the severe damage areas, especially in front of the Gamo and Idoura Lagoons, are still advanced, however the shoreline position at the detached breakwaters is retreated. The first three components of EOF analysis are same with the ones of the period three years after the tsunami. However, the contribution rates have changed, increasing for the first component and decreasing for these other two components. Shoreline change rates along the coast of the period five years after the tsunami change significantly compared to the period before the tsunami, and comparatively change compared to the period three years after the tsunami. As a result, the sediment budget has been also changed.
