Changes of shore line at beaches in the eastern part of Japan are investigated on the basis of aerial photogaphs taken in different years. Aerial photographs taken by U.S. Force through 1946-1948 and those by the Board of National Geographical Survey of Japan Goverment after 1961 were compared.
　Very simple technique was used to analyze the photographs, that is, stable basic points were selected on photographs, and the ground distance between these basic points and points on the shore line were measured.
　By these works, the results shown in Fig.3-Fig.76 were obtained and the typical patterns of shore line change were revealed as shown in Fig. 77.