Kenji M. Matsuzaki

 KENJI MATSUZAKI

Atmosphere and Ocean Research Institute, 

The University of Tokyo 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, JAPAN 

Ph: +81-4-7136-6143; Email: kmatsuzaki@g.ecc.u-tokyo.ac.jp 

Professional experience 

• 2018.08- now: Assistant Professor, Atmosphere and Ocean Research Institute, The University of Tokyo, Japan  (Contract ending in July 2028)

• 2019.03- 2020.02: Visiting Researcher Scholar, Institute of Geosciences, University of Kiel, Germany 

• 2016.04- 2018.07: Japan Society for the Promotion of Science Research Fellow (PD), Graduate School of Science, The University of Tokyo, Japan 

• 2014.03- 2016.03: Postdoctoral Researcher, The Geological Survey of Japan, AIST, Japan

• 2013.4- 2014.3: Postdoctoral associate, The Tohoku University Museum, Japan 

Education 

• 2013: PhD in Earth Science at the Graduate School of Science of the Tohoku University, Japan 

• 2009: MSc, Bordeaux-1 University, with honour France

• 2007: BSc, Bordeaux-1 University, France 

• 2004 : Baccalauréats Scientifique with honour, Lycée André-Malraux de Biarritz, France 

Research interests 

• Paleoceanography, Micropaleontology, Geological History of the Earths, Marine Geology 

Other Qualifications 

• 2024: Python for Data Science and AI by IBM developer Skills Networks (Coursera)

• 2023: Kyokushin Karate, 7th Kyu (Intermediate Level) 

• 2015: Driver's License

• 2012: Japanese-Language Proficiency Test (JLPT, N2)

Academic and professional services 

• Editorial responsibilities: 

  1. Handling Editor, Revue de Micropaleontologie (2019-present) 

  2. PAGES MAGAZINE Guest Editor, Fall 2024 issue "Achievements and future perspectives of scientific drilling on paleosciences"

• • Committees:

    1.  IODP Science Evaluation Panel (SEP) (2020-2024) 

    2. ECORD-JAPAN future Joint Drilling Program (IODP3) Committee (2022-present) 

    3. Japan Geoscience Union (JpGU) Session convener of “Evolution and variability of the Asian Monsoon and Indo-Pacific climate during the Cenozoic Era” (2021-present) 

    4. Delegate of the Geological Society of Japan (2022-present) 

    5. Executive Marine Geology Group of the Geological Society of Japan (2021-present) 

Award 

• Paleontological Research (BioOne), Best paper award of the Fiscal year 2015 for the article entitled as “Middle to Upper Pleistocene Polycystine Radiolarians from Hole 902-C9001C, Northwestern Pacific.” 

• Tohoku University, Graduate School of Science AOBA Science Award for outstanding PhD. Thesis 

Thesis commitee member : 

• 29th November 2022：Claire Martinot PhD. Defense (Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement (CEREGE, Aix en Provance, France). Thesis: Drivers of late Miocene tropical sea surface cooling: a new perspective from the equatorial Indian Ocean supervised by the Dr. Clara Bolton and Dr. Kazuyo Tachikawa. 

Funding (as a principal investigator only) 

• 2023-2026: Japan Society for the Promotion of Science, Grant for Fundamental Research (C), Principal Investigator (~ 35 000 US Dollars) 

• 2019-2024: Japan Society for the Promotion of Science, Fostering Joint International Research (B), Principal Investigator (~ 60 000 US Dollars) 

• 2016-2019: Japan Society for the Promotion of Science, Research Fellowship for Young Scientist (PD), Principal Investigator (~ 30 000 US Dollars) 

• 2015-2019: Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientist (B) (~ 20 000 US Dollars) 

• 2011-2013: Japan Society for the Promotion of Science, Research Fellowship for PhD Candidate (DC2), Principal Investigator (~ 20 000 US Dollars) 

• 
  

Peer Reviewed papers: 

1. 1. Matsuzaki, K. M. (2023). Evolution of oceanography of the central Northwest Pacific over the past 10 million years with focus on late Miocene global cooling. Paleoceanography and Paleoclimatology, 38, e2023PA004789. https://doi.org/10.1029/2023PA004789 

   2. Matsuzaki, KM., Holbourn, A., Kuhnt, W., Ikeda, M., Gong, L. (2013). Variability of the Indonesian Throughflow and Australian Monsoon across the Mid Pleistocene Transition (IODP 363, Site U1483). Earth and Planetary Science Letters. 

   3. Gong, L., Holbourn, A., Kuhnt, W., Opdyke, B., Zhang, Y., Ravelo, A., Zhang, P., Xu, J., Matsuzaki, KM., Aiello, I., Beil, S., Andersen, N. (2023) Middle Pleistocene re-organization of Australian Monsoon. Nature Communications, 14 (1), 2002. 

   4. Matsuzaki, K.M., Kamikuri, S., and Sagawa, T. (2023). Data report: Middle to Lower Miocene radiolarian biostratigraphy in the Western Pacific Warm Pool at IODP Expedition 363 Site U1490: preliminary results. In Rosenthal, Y., Holbourn, A.E., Kulhanek, D.K., and the Expedition 363 Scientists, Western Pacific Warm Pool. Proceedings of the International Ocean Discovery Program, 363: College Station, TX (International Ocean Discovery Program). https://doi.org/10.14379/iodp.proc.363.206.20 

   5. Akizawa, N., Hirano, N, Machida, S.,..., Matsuzaki, KM. et al., (2022) Rock and sediment dataset of petit-spots in the northwestern Pacific. Data in Brief. https://doi.org/10.1016/j.dib.2022.108764 

   6. Matsuzaki, KM., Ikeda, M. and Tada, R. (2022) Weakened Pacific Overturning Circulation, winter monsoon dominance and tectonism re-organized Japan Sea paleoceanography during the Late Miocene Global Cooling. Scientific Reports. 12, 11396. 

   7. Holbourn, A., Kuhnt, W., Kochhann, K.G.D., Matsuzaki, K.M., Andersen, N. (2022). Middle Miocene climate–carbon cycle dynamics: A key to understand future trends on a warmer Earth? in Aiello, I., Barron, J., and Ravelo, C., eds., Understanding the Monterey Formation and Similar Biosiliceous Units across Space and Time: Geological Society of America Special Paper, 556. 

   8. 8. Akizawa, N., Hirano, N., Matsuzaki, K.M., Machida, S., Tamura, C., Kaneko, J., et al. (2022). Direct evidence for disturbance of whole sediment layer in the subducting Pacific plate by petit-spot magma–water/sediment interaction. Marine Geology, v.444, 106712. 9. Matsuzaki, KM., (2021). Lower Pliocene and Upper Miocene collodarians and spumellarians (polycystine radiolarians) from the northwestern Pacific Ocean (ODP Site 1208). Revue de Micropaléontologie, 72, 100515. 

   9. 10. Yoshioka, J., Kuroda, J., Takahata, N., Sano, Y., Matsuzaki, K. M., ... & Tada, R. (2021). Zircon U-Pb dating of a tuff layer from the Miocene Onnagawa Formation in Northern Japan. Geochemical Journal, 55(3), 185-191. 

   10.  Matsuzaki, K.M., Suzuki, N., and Tada, R. (2020) An intensified East Asian winter monsoon in the Japan Sea between 7.9 and 6.6 Ma. Geology, Vol.48, 919-923. 

   11. Matsuzaki, K. M., Itaki, T., Sugisaki, S. (2020) Polycystine radiolarians vertical distribution in the subtropical Northwest Pacific during Spring 2015 (KS15-4). Paleontological Research, vol. 24, no. 2, pp.1-21. 

   12. Matsuzaki, K.M., Itaki, T. (2019) Late Miocene polycystine radiolarians of the Japan Sea (IODP Exp. 346 Site U1425). Bulletin of the Geological Survey of Japan, v. 70, 195–209. 

   13. Matsuzaki, K.M., Itaki, T. and Tada, R. (2019) Paleoceanographic changes in the Northern East China Sea during the last 400 kyr as inferred from radiolarian assemblages (IODP Site U1429). Progress in Earth and Planetary Science, v. 6., no.22, pp. 1-21 

   14. Kurokawa, S., Tada, R., Matsuzaki, K.M., Irino, T. and Lofi, J. (2019) Cyclostratigraphy of Late Miocene-Pliocene sediments at IODP Sites U1425 and U1430 in the Japan Sea and paleoceanographic implications. Progress in Earth and Planetary Science, v. 6., no. 2, pp.1-20 

   15. Matsuzaki, K.M., Itaki, T., Tada, R. and Kamikuri, S. (2018) Paleoceanographic history of the Japan Sea over the last 9.5 million years inferred from radiolarian assemblages (IODP Expedition 346 Sites U1425 and U1430). Progress in Earth and Planetary Science, v. 5., no. 54, pp. 1-33 

   16.  Matsuzaki, K. M., and Suzuki, N. (2018) Quaternary radiolarian biostratigraphy in the subarctic northeastern Pacific (IODP Expedition 341 Site U1417) and synchroneity of bioevents across the North Pacific: Journal of Micropalaeontology v. 37, 1-10 

   17. Kamikuri, S. I., Itaki, T., Motoyama, I., Matsuzaki, K.M. (2017) Radiolarian biostratigraphy from middle Miocene to late Pleistocene in the Japan Sea: Paleontological Research, v. 21, no. 4, pp. 397–421. 

   18. Matsuzaki, K. M., and Itaki, T. (2017) New northwest Pacific radiolarian data as a tool to estimate past sea surface and intermediate water temperatures: Paleoceanography, v. 32, no. 3, p. 218-245. 

   19. Matsuzaki, K. M., Itaki, T., and Kimoto, K. (2016) Vertical distribution of polycystine radiolarians in the northern East China Sea: Marine Micropaleontology, v. 125, p. 66-84. 

   20. Matsuzaki, K. M., and Itaki, T. (2016) The effect of boron (B) on radiolarian skeletons during extraction from mudstone and soft sediment: News of Osaka Micropaleontologists (NOM), v. Special Volume 16, p. 75-78. 

   21. Matsuzaki, K. M., Suzuki, N., Nishi, H., Hayashi, H., Gyawali, B. R., Takashima, R., and Ikehara, M., (2015) Early to Middle Pleistocene paleoceanographic history of southern Japan based on radiolarian data from IODP Exp. 314/315 Sites C0001 and C0002: Marine Micropaleontology, v. 118, p. 17-33. 

   22. Matsuzaki, K. M., Suzuki, N., and Nishi, H. (2015) Middle to Upper Pleistocene Polycystine Radiolarians from Hole 902-C9001C, Northwestern Pacific: Paleontological Research, v. 19, no. s1, p. 1-77. 

   23. Gulick, S. P., Jaeger, J. M., Mix, A. C., Asahi, H., Bahlburg, H., Belanger, C. L., Berbel, G. B., Childress, L., Cowan, E., Drab, L., Forwick, M., Fukumura, A., Ge, S., Gupta, S., Kioka, A., Konno, S., LeVay, L. J., Marz, C., Matsuzaki, K. M., et al. (2015) Mid-Pleistocene climate transition drives net mass loss from rapidly uplifting St. Elias Mountains, Alaska: Proceedings of the National Academy of Sciences of the United States of America (PNAS), v. 112, no. 49, p. 15042-15047. 

   24. Matsuzaki, K. M., Suzuki, N., Nishi, H., Takashima, R., Kawate, Y., and Sakai, T. (2014) Middle to Late Pleistocene radiolarian biostratigraphy in the water-mixed region of the Kuroshio and Oyashio currents, northeastern margin of Japan (JAMSTEC Hole 902-C9001C): Journal of Micropalaeontology, v. 33, no. 2, p. 205-222. 

   25. Matsuzaki, K. M., Nishi, H., Suzuki, N., Kawate, Y., Takashima, R., and Sakai, T. (2014) Cycladophora davisiana abundances as a paleoceanographic and stratigraphic tool in high latitude siliceous sediments: Marine Micropaleontology, v. 106, p. 1-9. 

   26. Matsuzaki, K. M., Nishi, H., Suzuki, N., Cortese, G., Eynaud, F., Takashima, R., Kawate, Y., and Sakai, T. (2014) Paleoceanographic history of the Northwest Pacific Ocean over the past 740kyr, discerned from radiolarian fauna. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 396, p. 26-40. 

   27. Matsuzaki, K. M., Nishi, H., Hayashi, H., Suzuki, N., Gyawali, B. R., Ikehara, M., Tanaka, T., and Takashima, R. (2014) Radiolarian biostratigraphic scheme and stable oxygen isotope stratigraphy in southern Japan (IODP Expedition 315 Site C0001): Newsletters on Stratigraphy, v. 47, no. 1, p. 107-130. 

   28. Zumaque, J., Eynaud, F., Zaragosi, S., Marret, F., Matsuzaki, K. M., Kissel, C., Roche, D. M., Malaize, B., Billy, I., Richter, T., and Palis, E. (2012) An ocean–ice coupled response during the last glacial: a view from a marine isotopic stage 3 record south of the Faeroe Shetland Gateway: Climate of the Past, v. 8, no. 1, p. 1-21. 

   29. Matsuzaki, K. M., Eynaud, F., Malaizé, B., Grousset, F. E., Tisserand, A., Rossignol, L., Charlier, K., and Jullien, E. (2011) Paleoceanography of the Mauritanian margin during the last two climatic cycles: From planktonic foraminifera to African climate dynamics: Marine Micropaleontology, v. 79, no. 3-4, p. 67-79. 

Other papers: 

1. Okino, K., Ashi, J., Kuroda, J., Yamaguchi, A., Matsuzaki, KM., et al. Cruise report of Expedition KH-22-3. 

2. Ikehara, M., Morono, Y., Sagawa, T., Okutsu, N., …, Matsuzaki, KM, and the Exp.913 Shipboard Scientists. Reconstruction of the Kuroshio state for super interglacials during the Brunhes chron, JAMSTEC Chikyu SCORE Expedition 913, Preliminary Cruise Report. 

3. 丸山俊明・本山 功・粕川 茜・秋山七海・石澤翔太・松崎賢史（2019）北海道日高地方波恵川鯨類化石産出地点周辺の中新統の珪藻化石層序．山形大学紀要（自然科学） 

4. 今野 進, 朝日博史, Christina L. Belanger, 福村朱美, Shyam Gupta, 喜岡 新, 松崎賢史・中村淳路, 小嶋孝徳, Oscar Romero, 須藤 斎 and IODP Expedition 341 Scientists. (2015).中新世以降のアラスカ湾は珪藻の海か？－統合国際深海掘削計画（IODP）第341次航海微化石報告. 化石, 97, p.1-４. 

5. 松崎賢史・板木拓也， (2015). GK14航海により北部琉球列島周辺海域から採取された表層堆積物中の放散虫遺骸群集（予察），地質調査総合センター速報，no. 67，105-108. 

6. 西田尚央，片山 肇，板木拓也，松崎賢史, (2015). GK14航海における CTD 観測, 地質調査総合センター速報，no. 67，82-88. 

7. 天野敦子, 板木拓也, 西田尚央, 片山 肇, 兼子尚知, 鈴木淳, 松崎賢史, (2015). 沖永良部及び徳之島周辺海域の堆積物特性. 地質調査総合センター速報，no. 67，75-81. 

8. 兼子尚知, 板木拓也, 片山 肇, 西田尚央, 鈴木淳, 松崎賢史, (2015). 徳之島及び伊平屋島沖海域からGK14航海で採取されたコケムシ類. 地質調査総合センター速報，no. 67，98-100. 

9. J.M. Jaeger, S.P.S. Gulick, L.J. LeVay, H. Asahi, H. Bahlburg, C.L. Belanger, G.B.B. Berbel, L.B. Childress, E.A. Cowan, L. Drab, M. Forwick, A. Fukumura, S. Ge, S.M. Gupta, A. Kioka, S. Konno, C.E. März, K.M. Matsuzaki, et al. (2014). Southern Alaska Margin: interactions of tectonics, climate, and sedimentation. Proceedings of the Integrated Ocean Drilling Program, Volume 341. doi: 10.2204/iodp.proc.341.2014. 

10. J.M. Jaeger, S.P.S. Gulick, L.J. LeVay, H. Asahi, H. Bahlburg, C.L. Belanger, G.B.B. Berbel, L.B. Childress, E.A. Cowan, L. Drab, M. Forwick, A. Fukumura, S. Ge, S.M. Gupta, A. Kioka, S. Konno, C.E. März, K.M. Matsuzaki, et al. (2013). Southern Alaska Margin: interactions of tectonics, climate, and sedimentation. Integrated Ocean Drilling Program Expedition 341 Preliminary Report. doi:10.2204/iodp.pr.341.2014. 

International conferences (Outside Japan and since 2014 only): 

• Matsuzaki, KM. Evolution of oceanography of the Central Northwest Pacific over the Past 10 million years with focus on Late Miocene Global Cooling. National Taiwan University &The University of Tokyo 2023 Joint Conference, National Taiwan University, December 8th, 2023

• Matsuzaki, KM. Reconstitution des paléotempératures de surface de la mer de la région Indo-Pacifique à partir des radiolaires fossiles. Journée Scientifique IRePSE. 5th October 2023, Universite de Lille, France. 

• Matsuzaki, KM., Holbourn, A., Kuhnt, W., Gong, L., Ikeda, M. Variability of the Indonesian Throughflow and Australian monsoon dynamism across the Mid Pleistocene Transition (IODP 363, Site U1483). European Geosciences Union, 23th-28th April, 2023 Vienna, Austria.

• Matsuzaki, KM.,Paleoceanographic Evolution of the Central North Pacific since the Late Miocene. Western Pacific Drilling (WEPAD) Workshop, 12 to 13 October 2022 in Kochi Core Center, Japan.

• Matsuzaki KM, Holbourn, A, Kuhnt, W, Gong, L, Ikeda, M. Variability of the Indonesian Throughflow and Australian monsoon dynamism across the Mid Pleistocene Transition (IODP 363, Site U1483). Indian Ocean Drilling (IO:DIP) Workshop, 27 to 30 September 2022 in Graz, Austria. 

• Matsuzaki, KM., Ikeda, M., Tada, R. Major re-organisation in marine ecosystem during the Late Miocene Global Cooling caused by changes in major monsoonal mode. Online Monsoon Seminar(organized by Prof. Peter Clift).2ndFebruary 2022. (Invited)

• Matsuzaki, K.M., Kubota, Y. Similarities and Disparities between Radiolarian-based Sea Surface Temperature Estimates with Foraminifera Mg/Ca SST in Monsoon Influenced Area. SAKIGAGE international symposium"Proxy for Paleotemperature Reconstruction" on Dec. 9th, 2021. (Online) (Invited)

• Matsuzaki, K.M., Gong, L., Holbourn, A., Kuhnt, W. Variability of the Australian-Indonesian Monsoon during the Mid Pleistocene Transition (IODP 363 Site U1483). American Geophysical Union, 09 to 13 December 2019 in San Francisco, USA.

• Holbourn, A., Kuhnt, W., Lübbers, J., Kochhann, K., Matsuzaki, K.M., Andersen, N. Miocene Climate-Carbon Cycle Dynamics: A Key to Understand Future Trends? American Geophysical Union, 09 to 13 December 2019 in San Francisco, USA.

• Kuhnt, W., Holbourn, A., Pei, R., Matsuzaki, K.M., Zhang, P., Hingst, J., Steffen, S., Koppe, M. Australian Monsoon variability over the past four glacial cycles : Role of interhemispheric temperature gradient and atmospheric greenhouse gases. American Geophysical Union, 09 to 13 December 2019 in San Francisco, USA.

• Holbourn, A., Kuhnt, W., Joehnck, J., Lubbers, J., Matsuzaki, K.M., Andersen, N., Rosenthal., Y., Kulhanek, D. Australian Monsoon Variability on a Warmer Miocene Earth. American Geophysical Union, 09 to 13 December 2019 in San Francisco, USA.

• Matsuzaki, K.M., Itaki, T., Tada, R., Kamikuri, S. Paleoceanography of the Japan Sea over the last 9.5 millions years inferred from radiolarian assemblages (IODP Expedition 346 Sites U1425 and U1430). 9thInternational Conference in Asian Marine Geology, October 10-12th2018, Shanghai, China. 

• Matsuzaki, K.M., Itaki, T., Tada, R., Kamkikuri, SI, Kurokawa, S. Paleoceanography of the Japan Sea during the late Miocene inferred from radiolarian data (IODP Exp. 346 Site U1425 & U1430). European Geosciences Union, 8-13 April 2018 in Vienna, Austria (口頭)

• Matsuzaki, K.M., Itaki, T., Tada, R., Kurokawa, S. Paleoceanography of Japan Sea over the 

• . 346, Site U1425). 15thINTERRAD2017, 22 to 27 November 2017 in Niigata Japan. 

• Matsuzaki, K.M., Itaki, T., Tada, R. Paleoceanography of the northern East China Sea over the past 400 kyr based on radiolarians (IODP Exp. 346, Site U1429). 15thINTERRAD2017, 22 to 27 November 2017 in Niigata, Japan. 

• Matsuzaki, K.M., Itaki, T., Tada, R., Kurokawa, S. Intermediate to deep water hydrographic changes of the Japan Sea over the past 10 Myr, inferred from radiolarian data (IODP Exp. 346, Site U1425). European Geosciences Union, 23-29 April 2017 in Vienna, Austria. 

• Matsuzaki, K.M., Itaki, T. Hydrographic Response of the East China Sea to the Sea Level Changes Lead by the Glacial/ Interglacial Climatic Cycle Inferred from Radiolarian Data. American Geophysical Union, 12 to 16 December 2016 in San Francisco, USA. 

• Matsuzaki, K.M., Itaki, T. Impact of the orbital forcing on the northern East China Sea regional paleoceanography inferred from radiolarian data. IODP Expedition 346 2ndPost Cruise Meeting. 21thto 24thJanuary 2016 in, Melbourne, Australia. 

• Matsuzaki, K.M., Itaki, T. Changes in radiolarian assemblages from surface sediments of the Northwestern Pacific. American Geophysical Union, 14 to 18 December 2015 in San Francisco, USA. 

• Matsuzaki, K.M.and Exp.341 Scientist. IODP Expedition 341 Site U1417 radiolarian assemblages. IODP Expedition 341 2ndPost Cruise Meeting. 15thto 18thNovember 2015 in Fridays Harbor Marine Labs, Seattle, USA. 

• Matsuzaki, K.M., Itaki, T., Kimoto, K. Living radiolarian vertical distribution in the northern East China Sea. 14thINTERRAD2015, 22 to 27 March 2015 in Antalya, Turkey. 

• Matsuzaki, K.M., Suzuki, N., Nishi, H. Radiolarian assemblage changes across the Mid Pleistocene Transition in southern Japan (IODP Exp. 314/315 Site C0001 Hole E & F). 14thINTERRAD 2015, 22 to 27 March 2015 in Antalya, Turkey. 

• Matsuzaki, K.M., Nishi, H., Suzuki, N., Gyawali, B.R., Hayashi, H., Ikehara, M., Takashima, R. Kuroshio Current fluctuations over the past 2 Myr, discerned from radiolarian fauna (IODP Exp. 315, Site C0001 & C0002). Asia Oceania Geoscience Society11th, 28 Julyto 01 August 2014 in Sapporo, Japan. 

• Asahi, H., Mix, A.C., Suto, I., Belanger, C.L., Fukumura, A., Gupta, S.M., Konnno, S., Matsuzaki, K.M., Romero, O.E., Gulick, S., Jaeger, J., Schneider, L. and IODP Exp. 341 Scientists. Oxygen isotope stratigraphy in the Gulf of Alaska (IODP Exp. 341). American Geophysical Union, 15 to 19 December2014 in San Francisco, USA. 

• Matsuzaki, K.M.Past 5 Myr Kuroshio Current fluctuations around the Japanese coast. Asian Margins Evolution (AME) and Western Pacific Drilling (WEPAD) Workshop, 19 to 21 May 2014 in Qingdao, China. 

Teaching: 

1. 2018- present: Micropaleontology and Biostratigraphy for Bachelor 3rd year students at the Graduate School of Science, Department of Earth Sciences, The University of Tokyo. 

2. 2021-present: Field Geology Course for Bachelor 3rd year students at the Graduate School of Science, Department of Earth Sciences, The University of Tokyo. 

Research Cruises 

1. April 2024: (Scheduled) KS-24-6 onboard the Shinseimaru R/V  for plankton surveys in Kuroshio waters (1 week)

2. November 2023: (Scheduled) KS-23-7 onboard the Hakuhomaru R/V for test new piston coring, multiple coring and vertical multiple plankton samplers off Northeast Japan (1 weeks) 

1. April 2023: KS-22-4 onboard the Shinseimaru R/V Off Akita Prefecture drilling for clarify local Sulfur cycle (1 week) 

2. April 2022: KS-22-5 onboard the Shinseimaru R/V Monitoring evolution of the Kuroshio Current near the East China Sea continental shelf (2 weeks) 

3. February 2022：KH-22-3 onboard the Hakuhomaru R/V Monitoring evolution of the Okinawa Through and collect surface sediment and sea water for radiolarian analysis (2 weeks) 

4. August 2021: Score Expedition 913 onboard the Chikyu R/V. Paleo-Kuroshio Current variability off Shikoku Island (2 weeks). 

5. May 2021: YK-07S onboard the Yokosuka R/V Clarifying Petit Spot in off Tohoku Margin: I collected surface to deep-sea water for radiolarian analysis during petit spot survey (1 weeks) 

6. January 2021: KH-21-3 onboard the Hakuhomaru R/V Monitoring evolution of the East Asian Monsoon through the Late Pleistocene and collecting seawater for radiolarian analysis (3 weeks) 

7. November 2016: Expedition KH-16-6 onboard the Hakuhomaru R/V: Monitoring the Kuroshio Paths (the University of Tokyo, Atmosphere and Ocean Research, research vessel). 2 weeks offshore. 

8. July 2015: Expedition KR-15-15 onboard the Kairei R/V: Japan Sea seasonal hydrographic variability（Jamstec vessel）. 2 weeks offshore. 

9. June 2015: Expedition KS-15-4 onboard the Shinseimaru R/V: Monitoring the Kuroshio Paths (the University of Tokyo, Atmosphere and Ocean Research, research vessel). 2 weeks offshore. 

10. October 2014 Expedition GK 14 onboard the Kaiyou maru: Mapping on the seafloor of the northern Okinawa Through (Geological Survey of Japan vessel). 3 weeks offshore. 

11. Jun to July 2013: Integrated Ocean Drilling Program Expedition 341: ALASKA TECTONICS, CLIMATE AND SEDIMENTATION onboard the JOIDES Resolution. 2 months offshore. 

12. April 2009：FORCLIM’. CSIC-CNRS: GULF OF BISCAY PLANKTON SPRING BLOOM ANALYSIS onboard the Sarmiento de Gamboa (Spain CSIC vessel). 3 weeks offshore. 

Field Geology 

1. June 2021: Field survey of Sado Island (off Niigata) Nakayama Middle Miocene Formation for a week 

2. October 2018 : Field survey of Akita Onnagawa Middle Miocene Formation for a week 

3. September 2017: Field Survey of Hidaka Hae Rivers Late Miocene Formation for a week 

4. September 2016: Field Survey of Hidaka Hae Rivers Late Miocene Formation for a week 

5. August 2016: Field Survey of Boso Peninsula Kiyosumi Late Miocene-Pliocene Formation for a week 

6. May 2016: Field survey of Akita Onnagawa Middle Miocene Formation for a week 

7. August 2015: Field Survey of Hidaka Hae Rivers Late Miocene Formation for a week 

Reviewer for: 

o Communications earth & environment, Paleoceanography and Paleoclimatology, Quaternary Science Reviews, Global and Planetary Change, Progress in Earth and Planetary Science, Palaeogeography, Palaeoclimatology, Palaeoecology, Marine Micropaleontology, Revue de Micropaleontologie, Deep-Sea Research Part I, Paleontological Research, Lethaia,  Continental Shelf Research, Journal of Sedimentary Research,  Regional studies in Marine Science, Paleoworld, Ocean Science Journal, Geodiversitas, PeerJ, Bulletin of the Geological Survey of Japan.