About me



Dept. of Oceanography
University of Hawai`i at Manoa

1000 Pope Road
Marine Science Building 509
Honolulu HI, 96822 USA.

Phone: +1 (808) 956-6632
Email: [email protected]

Curriculum Vitae


  • BSc 2001 – Environmental Biology and Chemistry, University of Toyama (Advisor: Prof. Kasahara).
  • MSc 2003 – Environmental Biology and Chemistry, University of Toyama (Advisor: Prof. Zhang).
  • Ph.D 2006 – Life and Environmental Sciences, University of Toyama (Advisor: Prof. Zhang).        

Research Interests:

  • Trace metal and nutrient geochemistry
  • Method development

Teaching activities:

  • Teaching certificates for high school & Junior high school (science), Japan.
  • Biogeochemical Method in Oceanography (flow injection method), USA.
  • Aquatic pollution (groundwater), USA.
  • Lectures for Ocean Data View, USA, Japan, China. (2018, 2017)
  • Earth and Environment class, Japan.
  • The Mauka to Makai Oceanography Summer Bridge Program, USA.

 Five selected publications: [full list is here]

Hatta, M., Measures, C.I., Wu, J., Fitzsimmons, J., Sedwick, P., Morton, P. (2015). Overview: Dissolved Fe and Mn concentrations in the North Atlantic Ocean during GEOTRACES 2010/2011 cruises. Deep-Sea Res. II. 116.117-129. doi: 10.1016/j.dsr2.2014.07.005.

Hatta, M., Measures, C.I., Lam, P.J., Ohnemus, D.C., Auro, M.E., Grand, M.M., Selph, K.E. (2016). The relative roles of modified circumpolar deep water and benthic sources in supplying iron to the recurrent phytoplankton blooms above Pennell and Mawson Banks, Ross Sea, Antarctica, Journal of Marine Systems. doi: 10.1016/j.jmarsys.2016.07.009.

Hatta, M., Measures, C.I., Ruzicka, J. J. (2018). Programmable Flow Injection. Principle, methodology and application for trace analysis of iron in a sea water matrix. Talanta 178. 698-703. 2018.  doi: 10.1016/j.talanta.2017.10.007.

Hatta, M., Measures, C.I., Ruzicka, J.J. Determination of traces of phosphate in sea water is automated by programmable flow injection, and optimized by means of novel information on kinetics of formation and spectra of phosphomolybdenum blue. Talanta. 191. 333-341. doi: 10.1016/j.talanta.2018.08.045.

Hatta, M., Ruzicka, J., Measures, C.I., The performance of a new linear long light path flow cell is compared with a liquid core waveguide and the linear cell is used for spectrophotometric determination of nitrite in sea water at nanomolar concentrations, Talanta. doi: 10.1016/j.talanta.2020.121240.

Funded projects:

2005                SASAKAWA SCIENTIFIC RESEARCH GRANT, the Japan Science Society, 17-327M, 2005-2006, 510,000 yen. (Hatta PI)

2014                National Science Foundation, GEOTRACES Arctic Section: Shipboard determination of key trace elements (NSF OCE-1439253) 2015-2017. $366,783. (Hatta co-PI)

2016                National Science Foundation, Automated Instrumentation for Chemical Oceanography Based on Sequential Injection Lab-On-valve Technology (NSF OCE-1634463) 2016-2019. $534,389. (Hatta co-PI)

2017                National Science Foundation, US GEOTRACES PMT: Shipboard determination of key dissolved trace elements (NSF OCE-1736906) 2017-2020. $ 438,766. (Hatta PI) includes 3-yrs of student funding.

2019                National Science Foundation, Collaborative Research (UH is lead Institution): Developing Automated Nutrient and Trace Metal Methodology using Programmable Flow Injection (NSF OCE-192490) 2019-2022. $ 523,836. (Hatta PI).

2020                DeepGreen, Characterization and monitoring of the water column ecosystem in the eastern CCZ (NORI-D). $514,191. (Hatta PI).