AIZAWA Koki

Project Researcher
E-maiｌ:　

Born June 1976, Kodaira, Tokyo

Education
1999, B. S. (Astrophysics), Kyoto University
2001, M. S (Geophysics), Kyoto University
2004, Ph. D (Geophysics), Kyoto University

Work Experience
2004/5−2005/3 Earthquake Research Institute, University of Tokyo
2005/4−2008/3 Volcanic Fluid Research Center, Tokyo Institute of Technology
2008/4−2009/3 Sakurajima Volcano Observatory, University of Kyoto
2009/4− Earthquake Research Institute, University of Tokyo

Research Interest
Fluids and its relation to volcanic/earthquake activities
Volcano structure
Electromagnetic phenomena associated with volcano and earthquake

Aizawa, K., W. Kanda, Y. Ogawa, M. Iguchi, A. Yokoo, H. Yakiwara, T., Sugano (2011), Temporal Changes in Electrical Resistivity at Sakurajima Volcano from Continuous Magnetotelluric Observations, Journal of Volcanology and Geothermal Research, 199, pp. 165-175. doi:10.1016/j.jvolgeores.2010.11.003. LINK

Aizawa, K., A. Yokoo, W. Kanda, Y. Ogawa, and M. Iguchi (2010), Magnetotelluric pulses generated by volcanic lightning at Sakurajima volcano, Japan, Geophysical Research Letters, 37, L17301, doi:10.1029/2010GL044208. LINK

Yoshimura, R., N. Oshiman, M. Uyeshima, H. Toh, T. Uto, H. Kanezaki, Y. Mochido, K. Aizawa, Y. Ogawa, T. Nishitani, S. Sakanaka, M. Mishina, H. Satoh, T. Goto, T. Kasaya, S. Yamaguchi, H. Murakami, T. Mogi, Y. Yamaya, M. Harada, I. Shiozaki, Y. Honkura, S. Koyama, S. Nakao, Y. Wada, and Y. Fujita (2009), Magnetotelluric Transect Across the Niigata-Kobe Tectonic Zone, Central Japan: A Clear Correlation Between Strain Accumulation and Resistivity Structure, Geophysical Research Letters, 36, L20311, doi:10.1029/2009GL040016. LINK
(The following code is both the login ID and password: 15040127)

Yamaguchi, S., M. Uyeshima, H. Murakami, S. Sutoh, D. Tanigawa, T. Ogawa, N. Oshiman, R. Yoshimura, K. Aizawa, I. Shiozaki, T. Kasaya (2009), Improvement of the Network-MT method and its first application in imaging the deep conductivity structure beneath the Kii Peninsula, southwestern Japan, Earth, Planets and Space, 61, 957-971.LINK

Aizawa K., Y. Ogawa, M. Mishina, K. Takahashi, S. Nagaoka, N. Takagi, S. Sakanaka, and T. Miura (2009), Structural controls on the 1998 volcanic unrest at Iwate Volcano: relationship between a shallow, electrically resistive body and the possible ascent route of magmatic fluid, Journal of Volcanology and Geothermal Research, 187, 131-139, doi: 10.1016/j.jvolgeores.2009.08.009. LINK

Aizawa, K., Y. Ogawa, and T. Ishido (2009), Groundwater flow and hydrothermal systems within volcanic edifices: Delineation by electric self-potential and magnetotellurics, Journal of Geophysical Research, 114, B01208, doi:10.1029/2008JB005910. LINK
(The following code is both the login ID and password: 49807251)

Aizawa, K. (2008), Classification of self-potential anomalies on volcanoes and possible interpretations for their subsurface structure, Journal of Volcanology and Geothermal Research, 175. 253-268, doi:10.1016/j.jvolgeores.2008.03.011. LINK

Aizawa, K., Y. Ogawa, T. Hashimoto, T. Koyama, W. Kanda, Y. Yamaya, M. Mishina, T. Kagiyama (2008), Shallow resistivity structure of Asama volcano and its implications for magma ascent process in the 2004 eruption, Journal of Volcanology and Geothermal Research, 173, 165-177, doi:10.1016/j.jvolgeores.2008.01.016. LINK

Aizawa, K., M. Uyeshima, and K. Nogami (2008), Zeta potential estimation of volcanic rocks on 11 island arc-type volcanoes in Japan: Implication for the generation of local self-potential anomalies, Journal of Geophysical Research, 113, B02201, doi:10.1029/2007JB005058. LINK

Aizawa, K., R. Yoshimura, N. Oshiman, K. Yamazaki, T. Uto, Y. Ogawa, S. B. Tank, W. Kanda, S. Sakanaka, Y. Furukawa, T. Hashimoto, M. Uyeshima, T. Ogawa, I. Shiozaki, T. Hurst (2005), Hydrothermal System beneath Mt. Fuji volcano inferred from Magnetotellurics and Electric Self-potential, Earth and Planetary Science Letters, 235, 343-355. LINK

Aizawa K., R. Yoshimura, N. Oshiman (2004), Splitting of the Philippine Sea Plate and a Magma Chamber beneath Mt. Fuji, Geophysical Research Letters, 31, L09603, doi:10.1029/2004GL019477. LINK

Aizawa K. (2004), A Large Self-potential Anomaly and its Changes on the Quiet Mt. Fuji, Japan, Geophysical Research Letters, 31, No. 5, L05612; doi:10.1029/2004GL019462. LINK