Crevasse Splays and Channels in the Lower Reaches of the Kizu River, Southern Kyoto, Central Japan(<Featured Articles>Turkey-Japan Joint Conference on Geomorphology)

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The Kizu River in southern Kyoto, central Japan, is a bedload-dominated river with many crevasse splays, flowing from granitic hills and mountains. Topographical and geological analyses indicate that along the lower reaches of the river, landforms slightly higher than the surrounding floodplainby ca. 1m were formed by multiple bank-breakage events due to flooding, not by a single event as suggested by some previous studies. At least six to eight layers of crevasse splay deposits of sand and sandy gravel with a thickness of 5-60cm occur in the trench sections of the higher land. Channels on the surrounding floodplain, previously reported as former river channels, were formed by flooding events due to the breakages of the river bank.
日本地形学連合の論文
2011-04-25