Research field (2)：
Atmospheric and hydrospheric science
, Solid earth science
Research keywords (4)：
Astrobiology
, Comparative Plantology
, Earth and Planetary System Science
, Comparative planetology
Research theme for competitive and other funds (16)：
2018 - 2023 Estimation of location, magnitude, and mode of the impact of a small solar system body in Southeast Asia at ca. 0.8 Ma and its effect on the surrounding environment
2016 - 2019 A study on the Proterozoic marine environment with a new model of marine biogeochemical cycle including microbial metabolism
2010 - 2012 Study of physical conditions for climate mode of terrestrial water-rich planets in the extrasolar planetary systems
2008 - 2010 Did change of deep water source amplify or diminish the climate fluctuation?: oceanic event stratigraphy of sulfur isotopes
2006 - 2008 Reconstruction and system analyses of the global events of the Earth during the Paleoproterozoic
2005 - 2007 A study for the long-term and short-term disturbances of the envirnment by the extraterrestrial impact at the Cretaceous/Tertiary boundary
2002 - 2004 Study of snowball Earth events and rise of the atmospheric oxygen based on geologicalg survey of glacial sediments of the Paleoproterozoic
2002 - 2003 Snowball Earth Condition inAGCMs : Effect of Season and Continental Distribution.
2000 - 2002 Study of the geomagnetic variation and its relation to climate change
2000 - 2001 Theoretical study on behavior of the Earth system in the snowball Earth phenomena
1999 - 2001 A study on the environmental catastrophe at the K/T bundary
1997 - 1998 氷期・間氷期サイクルにおける炭素循環及び気候変動についての理論的研究
1993 - 1995 Reconstruction of the aridity in Central Asia during Quaternary and its relation to the variation in atmospheric circulation
1993 - 1994 Evaporation kinetics of minerals and isotopic fractination ; application to the solar nebula
地球環境の安定性と進化に関する研究
Study on Lon-term Stability and Evolution of the Terrestrial Environment
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Papers (96)：
Yasuto Watanabe, Eiichi Tajika, Kazumi Ozaki. Evolution of iron and oxygen biogeochemical cycles during the Precambrian. Geobiology. 2023
Yasuto Watanabe, Eiichi Tajika, Kazumi Ozaki. Biogeochemical transformations after the emergence of oxygenic photosynthesis and conditions for the first rise of atmospheric oxygen. Geobiology. 2023
Kosuke T. Goto, Maria Luisa G. Tejada, Eiichi Tajika, Katsuhiko Suzuki. Enhanced magmatism played a dominant role in triggering the Miocene Climatic Optimum. Communications Earth & Environment. 2023. 4. 1
Kazumi Ozaki, Devon B. Cole, Christopher T. Reinhard, Eiichi Tajika. CANOPS-GRB v1.0: a new Earth system model for simulating the evolution of ocean-atmosphere chemistry over geologic timescales. Geoscientific Model Development. 2022. 15. 20. 7593-7639
Toshihiro Tada, Ryuji Tada, Paul A. Carling, Wickanet Songtham, Praphas Chansom, Toshihiro Kogure, Yu Chang, Eiichi Tajika. Identification of the ejecta deposit formed by the Australasian Tektite Event at Huai Om, northeastern Thailand. Meteoritics & Planetary Science. 2022. 57. 10. 1879-1901
Y. Chang, M. Kayama, E. Tajika, Y. Sekine, T. Sekine, H. Nishido, T. Kobayashi. SHOCK-INDUCED EFFECT ON CHATHODO-LUMINESENCE OF EXPERIMENTALLY SHOCKED QUARTZ. METEORITICS & PLANETARY SCIENCE. 2015. 50
The evolution and diversity of the surface environment on Earth-like planets with ocean and carbonate-silicate geochemical cycle. Proceedings of the ISAS Lunar and Planetary Symposium. 2014. 46. 5p
Kadoya S., Watanabe Y., Sekine Y., Tajika E. Evolution of surface environments of the Earth and terrestrial planets(2). Planetary People. 2013. 22. 4. 234-241
TAJIKA E. Preface. Planetary People. 2013. 22. 1. 3-3
1987 - 1992 The University of Tokyo Graduate School of Science Department of Geophysics
The University of Tokyo Faculty of Science Department of Geophysics
Professional career (2)：
(BLANK) (The University of Tokyo)
(BLANK) (The University of Tokyo)
Work history (5)：
2016/05 - 現在 The University of Tokyo Graduate School of Science Professor
2010/08 - 2016/04 The University of Tokyo Graduate School of Frontier Sciences Professor
2002/08 - 2010/07 The University of Tokyo Graduate School of Science Assistant Professor
1993/04 - 2002/07 The University of Tokyo Graduate School of Science Research Associate
1992/04 - 1993/03 Japan Society for the Promotion of Science Research Fellowship for Young Scientists
Committee career (11)：
2017/10 - 現在 日本学術会議 地球惑星科学委員会 副委員長
2017/10 - 現在 日本学術会議 第三部会員
2017/04 - 現在 宇宙航空研究開発機構 宇宙科学評議会 評議員
2016/06 - 現在 公益社団法人日本地球惑星科学連合 副会長
2016/04 - 現在 文部科学省 ポスト「京」重点課題推進WG 萌芽的課題サブWG委員
2008/06 - 現在 公益社団法人日本地球惑星科学連合 広報普及活動委員会 委員長
2008/06 - 現在 公益社団法事日本地球惑星科学連合 理事
1997/01 - 現在 日本惑星科学会 運営委員会 委員
2013/03 - 2015/03 内閣府 宇宙政策委員会 臨時委員
2013/01 - 2014/12 日本惑星科学会 会長
2008/08 - 2010/07 文部科学省 研究振興局 学術調査官
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Awards (3)：
2007 - 日本気象学会堀内賞
2003 - 第29回山崎賞
2003 - The Yamazaki Prize
Association Membership(s) (9)：
日本地球惑星科学連合
, 米国地質学会(Geological Society of America)
, 米国地球物理学連合(American Geophysical Union)
, 日本気象学会
, 日本地震学会
, 日本惑星科学会
, The Japanese Society for Planetary Sciences
, Geological Society of America
, American Geophysical Union
