About OPRI

Staff Members

Sachiko Oguma
Ocean Policy Research Institute
(Division of Ocean Policy Planning and Management)

Research Fellow
Sachiko Oguma
Ms. Sachiko Oguma has been affiliated with the Ocean Policy Research Institute (OPRI) as a Research Fellow since 2019. She is in charge of ocean education and ocean-climate change. 
Prior to present work, she served in research position at the Hokkaido National Fisheries Research Institute as postdoctal fellow of the Japan Society for the Promotion of Science (JSPS). She studied watar mass distribution off northern and eastern Hokkaido using stable isotopes as chemical tracers.
She was a data manager of oceanographic data at Marine Information Research Center (Japan Hydrographic Association), Japan Agency of Marine Earth Science and Technology, and Marine Works Japan Ltd. 


  • Ocean Education
  • Ocean Climate Change
  • Oceanographic Data Management
Oguma, S., T. Ono, Y.W.Watanabe, H. Kasai, S. Watanabe, D. Nomura and H. Mitsudera (2011): Flux of low salinity water from Aniva Bay (Sakhalin Island) to the southern Okhotsk Sea. Estuar. Coast. Shelf Sci., 91, 24-32, DOI:10.1016/j.ecss.2010.10.002.
Oguma, S., T. Ono, A. Kusaka, H. Kasai, Y. Kawasaki and T. Azumaya (2008): Isotopic tracers for water masses in the coastal region of eastern Hokkaido. J. Oceanogr., 64, 525-539, DOI:10.1007/s10872-008-0044-y.
Oguma, S., T. Suzuki, S. Levitus and Y. Nagata (2003): Skewed occurrence frequency of water temperature and salinity in the subarctic areas. J. Oceanogr., 59, 921-929, DO:10.1023/B:JOCE.0000009581.50905.39.
Dissemination of Ocean Literacy in CSK-2 Region Linking Research and Education


Academic/Professional Background
Academic Society etc.
  • The Oceanographic Society of Japan
  • American Geophysical Union
Professional Background
  • 2017-2019 Marine Works Japan Ltd.
  • 2012-2015 Japan Agency of Marine Earth Science and Technology
  • 2011-2012 National Research Institute of Fisheries Science
  • 2006-2011 Hokkaido National Fisheries Research Institute
  •     (2006-2010 as a postdoctal fellow of JSPS)
  • 1998-2004 Marine Information Research Center (Japan Hydrographic Association)
Academic Background
  • B.Sc (1996), M.Sc (1998), and Ph.D in Science (2003) from Tohoku University


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