Masahiko OZAKI Professor

Masahiko Ozaki Professor 
Ocean Industrial Science and Technology 



Private Website

Career Summary
1978: B.Eng., Faculty of Engineering, The University of Tokyo
1983: D.Eng., The University of Tokyo
1983-1989: Researcher, Hiroshima R&D Center, Mitsubishi Heavy Industries, Ltd.
1989-2007: Manager/Research Manager, Nagasaki R&D Center, Mitsubishi Heavy Industries, Ltd.
2007-2008: Group Leader, Center for Deep Earth Exploration(CDEX), Japan Agency for Marine-Earth Science and Technology(JAMSTEC)
2008-present: Professor, The University of Tokyo

Educational Activities
Graduate school: New Industry Development, Ocean Development Systems, Special Lecture on Ocean Technology, Policy, and Environment I
Undergraduate: Offshore Development Engineering

Research Activities
CO2 Ocean Storage:
Ocean storage of CO2 captured from fossil-fuel burning is a possible option for mitigating the increase in the CO2 concentration in the atmosphere. The role of CO2 ocean storage in the long-term portfolio of countermeasures against global warming is considered. The following studies are being conducted.
1) Technological development of CO2 release and dilution in deep waters for minimizing oceanic environmental impacts with ocean storage
2) Observation of liquid CO2 droplets in simulated deep ocean conditions for modeling CO2 dissolution and dispersion in the ocean
3) Technological and economical feasibility of CO2 marine transportation
4) Feasibility studies on continuing and mass CO2 ocean storage at a single site

Ultra Deep Ocean Drilling:
Scientific ocean drilling can be compared with space exploration as a human intellectual frontier. To reach unprecedented region - mantle, boring should be initiated at, for example, 4000-m deep sea floors to 7000-m and more. An innovative drilling technology is necessary.
1) Accurate estimation of axial strength of drill pipe considering dynamics
2) Accurate estimation of behavior of hung-off riser
3) Engineering of reasonable estimation of fatigue life of very long strings under vortex-induced vibration in high current

1) Minamiura, J., Suzuki, H., Chen, B., Nishio, M., Ozaki, M., CO2 Release in Deep Ocean by Moving Ship, 7th Int. Conf. on Greenhouse Gas Control Tech. (2004).
2) Ozaki, M., Davison, J., Minamiura, J., Marine Transportation of CO2, 7th Int. Conf. on Greenhouse Gas Control Tech. (2004).
3) Nishio, M., Masutani, S. M., Minamiura, J., Ozaki, M., Study of Liquid CO2 Droplet Formation under Simulated Mid-depth Ocean Conditions, Energy 30, 2284-2297 (2005).
4) Miyazaki, T., Miyazaki, E., Shinmoto, Y., Ozaki, M., Isozaki, Y., Drilling Experiences of the Deep Sea Drilling Vessel CHIKYU in High Current, OCEANS'08 MTS/IEEE KOBE - TECHNO-OCEAN'08 (2008).
5) Miyazaki, E., Ozaki, M., Nishioka, S., Minamiura, J., Application of Riser Fairing to the D/V CHIKYU, OCEANS'08 MTS/IEEE KOBE - TECHNO-OCEAN'08 (2008).

Other Activities
Japan Society of Naval Architecture and Ocean Engineering
Japan Society for Marine Surveys and Technology
Lead Author of IPCC Special Report on Carbon Dioxide Capture and Storage (2003-2005)

Future Plan
From the mid and long-term points of view, rises in population and economic growth will be the underlying progression in the world. To handle the accompanying issues, such as insufficient supplies of food, water, natural resources, energy, etc. or increasingly obvious climate changes, various countermeasures should be industrialized for their quantitative and continuous effects. We are positively pursuing the technological and industrial realization of the emerging concepts that are adaptable to the ocean and would contribute to the global society.

Messages to Students
I hope you will contribute to society in the course of your life. For that, understanding the social situation, finding key issues to be tackled, and acquiring expertise are prerequisites. I encourage you to train well and form good habits while young.