Nishida Prize

Ikuo Katayama


Research on the rheology and hydrological circulation inside the Earth and planets

A list of five major papers

  • Zaima, K., and Katayama, I. 2018. Evolution of elastic velocities and amplitudes during triaxial deformation of Aji granite under dry and water-saturated conditions. Journal of Geophysical Research, doi:10.1029/2018JB016377.
  • Katayama, I. Terada, T., Okazaki, K. and Tanikawa, W. 2012. Episodic tremor and slow slip potentially linked to permeability contrasts at the Moho. Nature Geoscience, 5, 731-734.
  • 片山郁夫, 平内健一,中島淳一(2010)日本列島下での沈み込みプロセスの多様性,地学雑誌,119, 205-223.
  • Katayama, I., Hirauchi, K., Michibayashi, K. and Ando, J. 2009. Trench-parallel anisotropy produced by serpentine deformation in the hydrated mantle wedge. Nature, 461, 1114-1117.
  • Katayama, I. and Karato, S. 2008. Low-temperature, high-stress deformation of olivine under watersaturated condition. Physics of Earth and Planetary Interior, 168, 125-133.

Major achievements

Ikuo Katayama has been actively researching the material circulation within the Earth and the influence of water on the rheological properties of rocks, based on theory, experiments and field observations. On the basis of the result on the crystal preferred orientation of olivine and serpentine obtained by high pressure and temperature deformation experiment, Dr. Katayama presented that physical properties of rocks play an important role in seismic wave anisotropy generated in subduction zone. Dr. Katayama has been conducting large-scale research on the global material circulation in the deep part of the Earth and comparative planetary science of rock rheology by adopting seismology and rock mechanics based on experimental research that always takes into account clear logic and the essence of the problem. The number of citations is outstanding, and he is a leader in this field, and he has been highly evaluated internationally.