OGUCHI, Takashi

Center for Spatial Information Science

Office: CSIS-415
TEL: +81-4-7136-4301
FAX: +81-4-7136-4301

Research Field

Geographical Information Science, Geomorphology

Current Research

I am currently working for a GIS (Geographic Information Systems) research center at the The University of Tokyo. To enhance the activities of this center and provide new methods of scientific research, I have been working on the application of GIS to various fields of earth science, especially geomorphology, hydrology, and Quaternary science. Currently my colleagues and I are looking at the following five topics:
Quantitative analysis of landforms using digital elevation models. Our analysis focuses on the origin of landforms in mountains with special reference to erosion processes.
Spatial analysis of natural hazards such as slope failure and tsunami erosion. Factors related to hazards are statistically analyzed using GIS to discuss hazard susceptibility and risk. GIS analysis of river water quality. Using a governmental database, the regional concentrations of chemical elements in river water are being compiled and mapped to assess factors affecting water quality.
GIS analysis of the environment. Digital data layers for some elements of the environment (e.g., landforms, river nets, land use, and population) are being analyzed to discuss the interrelations between physical and human factors in the geographical space. Our study includes issues related to archaeology and paleoenvironment.
Construction of a database for earth science and education. Data concerning landforms, Quaternary deposits, and relevant publications are being compiled in a digital format to create a database accessible through the Internet.

Representative Publications

1. C-W. Chen, T. Oguchi, Y.S. Hayakawa, H. Saito, H. Chen, G-W. Lin, L-W. Wei, Y-C. Chao and C-T. Cheng. Sediment yield during typhoon events in relation to landslides, rainfall, and catchment areas in Taiwan. Geomorphology, 303, 540-548, 2018.
2. T. Oguchi, Y.S. Hayakawa, and C.T. Oguchi. Quaternary fluvial environments and paleohydrology in Syria. In: Y. Enzel and O. Bar-Yosef (eds.) Quaternary of the Levant: Environments, Climate Change, and Humans, Cambridge University Press, 2017.
3. A.P. Yunus, T. Oguchi and Y.S. Hayakawa. Remote identification of fluvial knickzones and their imprints on landscape morphology in the passive margins of Western Arabia. Journal of Arid Environments, 130, 14-29, 2016.