Risk Evaluation and Disaster Mitigation Research Division
Inland Earthquake and Volcano Lab
Assistant Professor

Concurrent: Graduate School of Science
Research Subject(s)
I have been researching the development of fluvial terraces which are the basis for evaluating crustal deformation in the inland regions of Japan. Based on sedimentological analysis, tephrochronology, morphometrical analysis using GIS, I reconstruct the fill terrace development in the upper river valley, and then evaluate crustal deformation and sediment budget in long-term.
Key Words
Geomorphology / Quaternary geoscience / Tephrochronology / Sedimentology / Fluvial hazards
Research Activities

Fluvial terraces in the upper reaches of rivers are often used as the basis for the evaluation of the crustal deformation over inland region in Japan, however their developments have been poorly understood. Therefore, I analyze the terrace gravel, tephra (volcanic products), river morphology, and reconstruct the fill terrace development considering the sediment transportation from the mountain slopes and tributaries to the trunk river in order to evaluate the uplifting rate of the inland regions accurately. I believe that my research is important for not only tectonic geomorphology but also understanding sediment routing systems of rivers.

Selected Works

Takahashi, T. and Sugai, T. (2018) Tributary effects on fluvial terrace development since the last interglacial in the upper Tama River valley, central Japan. Quaternary International, 471, 318-331, doi:10.1016/j.quaint.2017.11.036

Takahashi, T. and Sugai, T. (2020) Reexamination of the Fluvial Terrace Development in the Nagatoro Gorge and the Development of Longitudinal Profile of the Ara River in the Kanto District, Central Japan. Journal of Geography (Chigaku Zasshi), 129(1), 123-140 (in Japanese with English abstract).

Selected Memberships
  • The Association of Japanese Geographers
  • Japan Association for Quaternay Research
  • Japan Geoscience Union
  • Japanese Gomorphological Union