抄録
A monitoring method is applied to Yokosuka Coast in Miyagi Prefecture for understanding short-term topography change induced by wave action. Using images from an automated digital camera installed on the coast, shoreline position is determined after correcting the influence of wave run-up and tidal variation. Observed shoreline on the southern coast shows temporal variation in response to wave motion, whereas in the northern part of the study area, shoreline advancement is predominantly observed due to consistent recovery of the river mouth sand bar. Furthermore, a simple numerical modeling based on linear response function is applied to the present data set to reproduce the measured short-term shoreline variation.
