Changes in sea-level and coastal environment since the last deglaciation on the coast of Kagoshima Bay, southern Japan

Hiroshi MORIWAKI; Shigeo SUGIHARA; Yoshiaki MATSUSHIMA; Kazuo MASUBUCHI; Kensuke TSURUMAKI; Akio OHIRA

doi:10.14866/ajg.2012s.0_100090

Annual Meeting of the Association of Japanese Geographers, Spring 2012

Session ID : 609

DOI https://doi.org/10.14866/ajg.2012s.0_100090

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Host: The Association of Japanese Geographers

Abstract

Changes in sea-level and coastal environment since the last deglaciation on the coast of Kagoshima Bay, southern Japan

*Hiroshi MORIWAKI, Shigeo SUGIHARA, Yoshiaki MATSUSHIMA, Kazuo MASUBUCHI, Kensuke TSURUMAKI, Akio OHIRA

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Keywords: sea-level change, coastal environment, tephra, Kagoshima Bay, last deglaciation

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Abstract

We obtained accurate changes in sea level and coastal environment since the last deglaciation on the coast of Kagoshima Bay on the basis of bore-hole data, molluscan shell, C-14 age and tephra. Sea-level changes are as follows: rapid rise between c. 15,000 and c. 13,000 cal BP, slow rise between c. 13,000 and c. 11,500 cal BP, rapid rise between c.11,500 and c. 7,500 cal BP. The depth of the mouth of the palaeo-river in the northern coast and the deepest point in the mouth of the bay suggest Kagoshima bay was lake in LGM.

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