- 2021 - 2025 Geographical studies of coastal waters: creating coastal seafloor geomorphology and visualization and enlightenment of seafloor landscape
- 2020 - 2023 石窟史料からみた敦煌オアシス地域の研究
- 2018 - 2023 Geographical study on Prompt land use changes on riverside land from the viewpoint of dynamics of physical and social environment along the middle Arakawa river, Saitama, Japan
- 2007 - 2009 Study on zorning for natural conservation and susteinable use in the Kamikochi National Park
- 2005 - 2007 Hydrogeomorohic studies on watershed-environment management in the monsoon zone in changing global environment
- 2003 - 2004 Classification of rivers based on fluvial land forms and debris transport processes in Yaku Island, southern Japan.
- 2001 - 屋久島における地形発達,自然災害,環境保全に関する研究
- 1998 - 2000 Land Degradation in the Oases on the South Side of the Taklimakan Desert
- 1998 - 1999 中・小規模天然ダムの決壊による河川の土砂移動と地形変化に関する研究
- 1999 - 環太平洋地域の山地河川における土砂移動プロセスに関する研究
- 1995 - 1995 日本の山地河川流域における礫の輸送システムの地域性とその成因
- 1992 - Study on natural history in Kamikochi, Central Japan
- 1990 - Study on fluvial landform development and geomorphic processes
- 1990 - Study on debris transport processes along mountain rivers
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