Geomorphic development of holocene coastal plains in japan

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In this paper, geomorphic development of the Kujukuri, Yufutsu, Akita and Niigata coastal plains is discussed, with special emphasis on (1) discontinuities in shoreline development, (2) rate of shoreline development and (3) coastal sand dune development during the past about 6,000 years. As a result, (1) two major discontinuities in shoreline development probably caused by the minor sea-level fluctuation, are generally recognized in these coastal plains, occurring about 5,000 to 4,000, and 3,000 to 2,000 years ago. (2) The rates of shoreline development of the four plains were generally low around 6,000 years. The high rates of progradation occurred immediately after 5,000 or 4,000 years ago. The rates have gradually decreased with time since 3,000 or 2,000 years ago. (3) The four coastal plains are generally divided into three belts. The formation of these belts is closely related to the rate of shoreline development.
首都大学東京の論文