Takashi KIKUCHI Visiting Professor|Department of Ocean Technology,Policy, and Environment Graduate School,The University of Tokyo

Member

Takashi KIKUCHI Visiting Professor

Field : Marine environment observational research for the Arctic Ocean

TEL :

E-mail : takashik@jamstec.go.jp

Private Website :
https://www.jamstec.go.jp/e/

Career Summary

• B.S., Science, Hokkaido University, Sapporo, JAPAN, March 1989
• M.S., Science (Geophysics), Hokkaido University, Sapporo, JAPAN, March 1991
• Ph.D, Science (Geophysics), Hokkaido University, Sapporo, JAPAN, December 1996
• Oct. 1996-Sept.1997; Postdoctoral fellow, Japan Marine Science and Technology Center
• Oct. 1997-present; Research Scientist, Japan Marine Science and Technology Center (since 2004, Japan Agency for Marine-Earth Science and Technology)
• Apr. 2009-present; Team Leader of the Arctic Ocean Climate System Research, JAMSTEC
• Apr. 2015-present; Deputy director, Institute of Arctic Climate and Environment Research (IACE), JAMSTEC

Educational Activities

Special Lecture on Ocean Technology, Policy, and Environment II

Research Activities

• Yamamoto-Kawai, M., T. Mifune, T. Kikuchi, and S. Nishino, Prolonged aragonite undersaturation in bottom water of a biological hotspot in the Chukchi Sea, Arctic Ocean, Biogeosciences, 13, 6155-6169, doi:10.5194/bg-13-6155-2016, 2016.
• Nishino, S., T. Kikuchi, A. Fujiwara, H. Hirawake, and M. Aoyama, Water mass characteristics and their temporal changes in a biological hotspot in the southern Chukchi Sea, Biogeosciences, 13, 8, 2563-2578, doi:10.5194/bg-13-2563-2016, 2016.
• Itoh, M., R. S. Pickart, T. Kikuchi, Y. Fukamachi, K. I. Ohshima, D. Simizu, K. R. Arrigo, S. Vagle, J. He, C. Ashjian, J. T. Mathis, S. Nishino, and C. Nobre, Water properties, heat and volume fluxes of Pacific water in Barrow Canyon during summer 2010, Deep Sea Res. I, 102, 43-54, doi:10.1016/j.dsr.2015.04.004, 2015.
• Itoh, M., S. Nishino, Y. Kawaguchi, and T. Kikuchi, Barrow Canyon volume, heat, and freshwater fluxes revealed by long-term mooring observations between 2000 and 2008, J. Geophys. Res. – Oceans, 118, 9, 4363-4379, doi:10.1002/jgrc.20290, 2013.
• Nishino, S, M. Itoh, Y. Kawaguchi, T. Kikuchi, and M. Aoyama, Impact of an unusually large warm-core eddy on distributions of nutrients and phytoplankton in the southwestern Canada Basin during late summer/early fall 2010, Geophys. Res. Lett., 38, L16602, doi:10.1029/2011GL047885, 2011.
• Rabe, B., M. Karcher, U. Schauer, J.M. Tools, R.A. Krishfield, S. Pisarev, F. Kauker, R. Gerdes, and T. Kikuchi, An assessment of pan-Arctic Ocean freshwater content changes from the 1990s to the IPY period, Deep Sea Res., 58, 2, 173-185, doi:10.1016/j.dsr.2010.12.002, 2011.
• Kikuchi, T., J. Inoue and D. Langevin, Argo-type profiling float observation under the Arctic multiyear ice, Deep Sea Res., 54, 1675-1686, 2007.
• Kikuchi, T., J. Inoue, and J. Morison, Temperature difference across the Lomonosov Ridge: Implications for the Atlantic Water circulation in the Arctic Ocean, Geophys. Res. Lett., 32(13), L20604, doi;10.1029/2005GL023982, 2005.
• Kikuchi, T., K. Hatakeyama, and J. H. Morison, Distribution of convective Lower Halocline Water in the eastern Arctic Ocean, J. Geophys. Res., 109, C12030, doi:10.1029/2003JC002223, 2004.
• Kikuchi, T., M. Wakatsuchi, and M. Ikeda, A numerical investigation of transport process of dense shelf water from a continental shelf to a slope, J. Geophys. Res., 104, C1, 1197-1210, 1999.

Other Activities

• Executive committee Member, International Arctic Buoy Programme (IABP), Jun. 2008-present
• International Science Steering Group (ISSG) Member, Arctic-Subarctic Ocean Flux (ASOF), Jan. 2010-present
• Vice-chair, Pacific Arctic Group (PAG), April 2012-present
• Contributing author, Adaptation Action for Changing Arctic (AACA)-C Bering/Chukchi/Beaufort regional report, Arctic Monitoring and Assessment Programme (AMAP).

Future Plan

In a recent decade, scientists have informed that “the Arctic is Changing” due to global warming. Then, we say now that “the Arctic is shifting a new state”.  It is just one of the remarkable evidences of global environmental changes.  I want to find what kinds of environmental changes are now going on and why such changes happen in the Arctic Ocean / Arctic region.  And then, I want to know what we should do for us.

Messages to Students

Let’s go on the field of the environmental changes!  Let’s find on-going changes in the field by yourself.

Then, let’s think of what we should do by yourself.