OGURI Kazumasa, Technical Scientist

Earth and Life History Research Program
Institute of Biogeosciences
Advanced Marine Technology Research Program
Marine Technology and Engineering Center
Japan Agency for Marine-Earth Science and Technology

2-15 Natsushima, Yokosuka
Kanagawa, 237-0061 Japan

Research gate

[English / 日本語]
  • Ph.D. Nagoya University, on Feb.2001.
    Thesis title "Sedimentary processes and paleoenvironmental changes of the East China Sea"
  • Ph.D. student, Nagoya University, Hydrospheric-Atmospheric Sciences, Apr.1995 - Mar.1999.
  • M.Sc. student, Nagoya University, Hydrospheric-Atmospheric Sciences, Apr.1993 - Mar.1995.
  • B.Sc. student, Shizuoka University, Geoscience, Apr.1989 - Mar.1993.

  • Research and professional experience:
  • Research Scientist, Institute of Biogeosciences (Biogeos), JAMSTEC, Apr.2009 - present.
  • Research Scientist, IFREE, JAMSTEC, Jul.2004 - Mar.2009.
  • Technical Researcher, Institute for Research on Earth Evolution (IFREE), JAMSTEC, Jun.2001 - Jun.2004.
  • Research Staff, Japan Marine Science Foundation, Apr.1999 - May.2001.

  • Research interests:
  • Modern sedimentary processes from meromictic lake to hemipelagic oceans.
  • Development of high precision planar O2 optodes and microelectrodes for in situ measurements.
  • Evaluation of recent sediment accumulation rates using natural and artificial radionuclides.

  • Selected publications:
  • Tsuboi, T., Wada, H., Nakamura, T., Hang, T.T, Matsuzaki, H., Otsuji, N., Fujioka, K., Oguri, K., Kitazato, H. Deep-sea limestone block as as source of 14C-depleted dissolved inorganic carbon at the Palau Trench. Chemical Geology, 364, 1-8, 2014.
  • 2013
  • Yamamoto, M., Nakamura, R., Oguri, K., Kawagucci, S., Suzuki, K., Hashimoto, K., Takai, K. Electricity generation and illumination via an environmental fuel cell in deep-sea hydrothermal vents. Angewandte Chemie International Edition, DOI: 10.1002/anie.201302704, 2013.
  • Oguri, K., Kawamura, K., Sakaguchi, A., Toyofuku, T., Kasaya, T., Murayama, M., Glud, R. N., Kitazato, H., Hadal disturbance in the Japan Trench induced by the 2011 Tohoku-Oki Earthquake. Scientific Reports, 3, 1915, DOI:10.1038/srep01915, 2013. Open Access
  • Glud, R. N., Wenzhöfer, F., Middelboe, M., Oguri, K., Turnewitsch, R., Canfield, D. E., Kitazato, H., High rates of microbial carbon turnover in sediments in the deepest oceanic trench on Earth. Nature Geoscience, 6, 284-288, DOI: 10.1038/NGEO1773, 2013.
  • Tsuchiya, M., Gooday, A.J., Nomaki, H.,Oguri, K., Kitazato, H., Genetic diversity and environmental preferences of monithalamous foraminifers revealed through clone analysis of environmental small-subunit ribosomal DNA sequences. Journal of Foraminiferal Research, 43, 1, 3-13, 2013.
  • 2012
  • Harada, N., Sato, M., Oguri, K., Hagino, K., Okazaki, Y., Katsuki, K., Tsuji, Y., Shin, K-H., Tadai, O., Saitoh, S., Narita, H., Konno, S., Jordan, R.W., Shiraiwa, Y., Grebmeier, J., Recent environmental changes enhance coccolithophorid blooms in the Bering Sea. Global Biogeochemical Cycles, 26, GB2036, doi:10.1029/2011GB004177, 2012.
  • Kiyokawa. S., Ninomiya, T., Nagata, T., Oguri, K., Ito, T., Ikehara, M., Yamaguchi, K.E., Effects of tides and weather on sedimentation of iron-oxyhydroxides in a shallow-marine hydrothermal environment at Nagahama Bay, Satsuma Iwo-Jima Island, Kagoshima, southwest Japan. Island Arc, 21,2,118-147, 2012.
  • Asahara, Y., Takeuchi, F., Nagashima, K., Harada, N., Yamamoto, K., Oguri, K., Tadai, O., Provenance of terrigenous detritus of the surface sediments in the Bering and Chukchi Seas as derived from Sr and Nd isotopes: implications for recent climate change in the Arctic regions. Deep-Sea Res. II, 61-64, 155-171, 2012.
  • Oguri, K., Harada, N., and Tadai, O., Excess 210Pb and 137Cs concentrations, mass accumulation rates, and sedimentary processes on the Bering Sea continental shelf. Deep-Sea Res. II, 61-64, 193-204, 2012.
  • 2011
  • Hunter, W., Oguri, K., Kitazato, H., Ansari, Z.A., and Witte, U., Epi-benthic megafauna zonation across an oxygen minimum zone at the Indian continental margin. Deep-Sea Res. I, 58, 6, 699-710, 2011.
  • 2010
  • Yamaguchi, K.E., Oguri, K., Ogawa, N.O., Sakai, S., Hirano, S., Kitazato, H., and Ohkouchi, N., Geochemistry of modern carbonaceous sediments overlain by photic zone anoxia developed in the salime meromictic Lake Kai-ike, southwest Japan: I. Early diagenesis of organic carbon, nitrogen, and phosphorus, Palaeogeog. Palaeoclimatol. Palaeoecol., 294,1-2,72-82, 2010.
  • 2009
  • Tada, Y., Fujikura, K., Oguri, K., Kiazato, H. and Tanabe, K., In situ fluorochrome calcein marking of deep-sea molluscs using a new growth chamber, Aquat Ecol. DOI:10.1007/s10452-009-9290-3, 2009.
  • Berg, P., Hume, A., Stahl, H., Oguri, K., Meyer, B. and Kiazato, H, Eddy correlation measurements of oxygen uptake in deep ocean sediments, Limnol. Oceanogr. Methods., 7, 576-584, 2009.
  • Glud, R.N., Thumdrup, B., Stahl, H., Wenzhöfer, F., Glud, A.N., Nomaki, H., Oguri, K., Revsbech, N.P. and Kitazato, Nitrogen cycling in a deep ocean margin sediment (Sagami Bay, Japan). Limnol. Oceanogr. , Limnol. Oceanogr., 54, 723-734, 2009.
  • Glud, R.N., Stahl, H., Berg, P., Wenzhöfer, F., Oguri, K., and Kitazato, H. Microscale patchiness in distribution and consumption of O2: A detailed in situ microsensor study of an ocean margin sediment. Limnolo. Oceanogr. , Limnol. Oceanogr., 54, 1-12, 2009.
  • 2008
  • De Nooijer, L.J., Toyofuku, T., Oguri, K., Nomaki, H., and Kitazato, H. Intracellular pH distribution in foraminifera determined by the fluorescent probe HPTS. Limnol. Oceanogr. Methods, 6, 610-618, 2008.
  • 2007
  • Takishita, K., Tsuchiya, M., Kawato, M., Oguri, K., Kitazato, H. and Maruyama, M. Genetic diversity of microbial eukaryotes in anoxic sediment of the saline meromictic lake Namako-ike (Japan): on the detection or anaerobic or anoxic-tolerant lineages of eukaryotes. Protist, 158, 1, 51-64, 2007.
  • 2006
  • Oguri, K., Kitazato, H. and Glud, R.N. Platinum octaetylporphyrin based planar optodes combined with an UV-LED excitation light source: an ideal tool for high-resolution O2 imaging in O2 depleted environments. Mar. Chem., 100, 95-106, 2006.
  • Middelboe, M., Glud, R.N., Wenzhöfer, F., Oguri, K., and Kitazato, H. Spatial distribution and activity of viruses in the deep-sea sediments in Sagami Bay, Japan. Deep-sea Res. I, 53, 1-13, 2006.
  • 2005
  • Glud, R.N., Wenzhöfer, F., Tengberg, A., Middelboe, M., Oguri, K., and Kitazato, H. Distribution of oxygen in surface sediments from central Sagami Bay, Japan: In situ measurements by microelectrodes and planar optodes. Deep-sea Res. I, 52, 1974-1987, 2005.
  • Ohkouchi, N., Nakajima, Y., Okada, H., Ogawa, N. O., Suga, H., Oguri, K. and Kitazato, H. Biogeochemical processes in the saline meromictic Lake Kaiike, Japan: Implications from molecular isotopic evidences of photosynthetic pigments Env. Microbiol., 7(7), 1009-1016, 2005.
  • 2004
  • Koizumi,Y., Kojima, H., Oguri, K., Kitazato, H. and Fukui, M. Distribution of chloropigments in suspended particulate matter and benthic microbial mat of a meromictic lake, Lake Kaiike, Japan. Env. Microbiol., 6(6), 622-637, 2004.
  • 2003
  • Nakajima, Y., Okada, H., Oguri, K., Suga, H., Kitazato, H., Koizumi, Y., Fukui, M. and Ohkouchi, N. Distribution of chloropigments in suspended particulate matter and benthic microbial mat of a meromictic lake, Lake Kaiike, Japan. Env. Microbiol., 5(11), 1103-1110, 2003.
  • Ujiié, Y., Ujiié, H., Taira, A., Nakamura, T. and Oguri, K. Spatial and temporal variability of surface water in the Kuroshio source region, Pacific Ocean, over the past 21,000 years; evidence from planktonic foraminifera. Mar. Micropal., 49, 335-364, 2003.
  • Oguri, K., Matsumoto, E., Yamada, M., Saito, Y. and Iseki, K. Sediment accumulation rates and budgets of depositing particles of the East China Sea. Deep-Sea Res. II, 50, 513-528, 2003.
  • Before 2003
  • Oguri, K., Matsumoto, E., Saito, Y., Honda, M. C., Harada, N. and Kusakabe, M. Evidence for the offshore transport of terrestrial organic matter due to the rise of sea level: the case of the East China Sea continental shelf. Geophys. Res. Lett., 27, 23, 3893-3896, 2000.
  • Saito, Y., Katayama, H., Ikehara, K., Kato, Y., Matsumoto, E., Oguri, K., Oda, M. and Yumoto, M. Transgressive and highstand system tracts and post-glacial transgression, the East China Sea. Sediment. Geol., 122, 217-232, 1998.

  • Patents:
  • Oguri, K., Observation Apparatus.Patent No. US 8,202,478 B2, Jun, 19, 2012
  • Oguri, K., Measuring apparatus for dissolved oxygen.EP2098862, Nov, 21, 2012

  • Updated on May/30/2013

    Institute of Biogeosciences
    Japan Agency for Earth-Marine Science and Technology