Katsutada Sezawa
妹沢 克惟
Born21 August 1895
Ishikawa Prefecture, Japan
Died23 April 1944(1944-04-23) (aged 48)
NationalityJapanese
Alma materTokyo Imperial University
Known forTheoretical study of seismic wave generation and propagation and others
AwardsImperial Prize of the Japan Academy (1931)
Scientific career
InstitutionsEarthquake Research Institute

Katsutada Sezawa (Japanese: 妹沢 克惟, 21 August 1895 – 23 April 1944[1]) was a Japanese geophysicist (Seismologist).[2] Sezawa's key work was on the mathematical aspects of wave transmission in media of different viscosities and the Sezawa wave mode of surface waves is named after him.

Sezawa was born in Ishikawa Prefecture where his father was a judge.[3] He graduated in 1921 from the Imperial University of Tokyo in shipbuilding and became a professor at the university in 1928. Sezawa became the director of the Earthquake Research Institute, University of Tokyo. His key work was on theoretical aspects of seismic wave transmission in different media. He was able to calculate differences in the structure of the earth based on seismic observations. He also predicted the existence of surface waves which are now termed as Sezawa waves.[4][5] He was awarded the Imperial Prize of the Japan Academy (1931).[6]

References

  1. ↑ 高橋裕、藤井肇男 共著 (2013), 近代日本土木人物事典: 国土を築いた人々, 鹿島出版会, ISBN 978-4306094291
  2. ↑ 日本人名大辞典+Plus, 日本大百科全書(ニッポニカ),デジタル版. "妹沢克惟とは". コトバンク (in Japanese). Retrieved 13 July 2021.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. ↑ 20世紀日本人名事典,367日誕生日大事典. "妹沢 克惟とは". コトバンク (in Japanese). Retrieved 13 July 2021.{{cite web}}: CS1 maint: numeric names: authors list (link)
  4. ↑ Sezawa, K. (1927). "On the Propagation of Rayleigh Waves on Plane and Spherical Surfaces" (PDF). Bull. Earthquake Res. Inst. (Tokyo). 2: 21–28.
  5. ↑ Sezawa, K. (1927). "Dispersion of Elastic Waves Propagated on the Surface of Stratified Bodies and on Curved Surfaces" (PDF). Bull. Earthquake Res. Inst. (Tokyo). 3: 1–18.
  6. ↑ "授賞一覧｜日本学士院". www.japan-acad.go.jp. Retrieved 13 July 2021.


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