- 1991 - 2003 Tohoku University
- 1991 - 2003 Tohoku University, Associate Professor
- 2003 - - 東北大学 教授
- 1980 - 1991 Tohoku University
- 1980 - 1991 Tohoku University, Research Assistant
- Tohoku University Graduate School of Environmental Studies, Department of Frontier Sciences for Advanced Environment, Urban Environment and Environmental Geography,Physical Environmental Geography Professor
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