|Published Papers|
Sakanaka,
S., N. Oshiman and N. Sumitomo, A hybrid calculation
method of tectonomagnetic effect using BEM and the
surface integral representation of the piezomagnetic
potential, --Two dimensional case study --, J. Geomag.
Geoelctr., 49, 101-118, 1997.
Oshiman,
N., Y. Sasai, Y. Honkura, Y.
Ishikawa, and Y. Tanaka, Geomagnetic changes correlated with crustal movement in the north-eastern part of the Izu Peninsula, Japan, AnnalidiGeofisica, 60, N.2, 479-494,
1997.
Electormagnetic Research Group for the 1995 Hyogo-ken Nanbu Earthquake, Tectonoelectric
signal related with the occurrence of the 1995 Hyogo-ken Nanbu earthquake (M7.2) and preliminary results of
electromagnetic observation around the focal area, J. Phys. Earth., 45, 91-104,
1997.
Yamaguchi, S., Y. Kobayashi, N. Oshiman, K. Tanimoto, H. Murakami,
I. Shiozaki, M. Uyeshima, H.
Utada, and N. Sumitomo, Preliminary report on regional
resistivity variation inferred from the Network MT
investigation in the Shikoku district, southwestern Japan, Earth, Planets and
Space, 51, 193-203, 1999.
Ichiki,
M., M. Mishina, T. Goto, N.
Oshiman, N. Sumitomo, and H. Utada, Magnetotelluric
investigations for the seismically active area in northern Miyagi Prefecture,
northeastern Japan., Earth, Planets and
Space, 51, 351-361, 1999.
Honkura,
Y., A. M. Isikara, N. Oshiman, A. Ito, B. Ucer, S. Baris, M. K. Tuncer, M.
Matsushima, R. Pektas, C. Celik, S. B. Tank, F. Takahashi. M. Nakanishi, R. Yoshimura,
Y. Ikeda, and T.Komut, Preliminary results of multidisplinary observations before, during and after Kocaeli (Izmit) earthquake in the
western part of the North Anatolian Fault Zone. Earth, Planets and Space, 52,
293-298, 2000.
Oshiman,
N., Y. Honkura, M. Matsushima, S. Baris, C. Celik, M.K. Tuncer, and A.M. Isikara, Deep
resistivity structure around the fault associated with
the 1999 Kocaeli earthquake, Turkey, In Proc.
International Workshop on Seismotectonic at the Subduction Zone, 313-325, 2000.
Oshiman,
N., Y. Sasai, Y. Ishikawa, and Y. Honkura, Long-term Geomagnetic Changes Observed in
Association with Earthquake Swarm Activities in the Izu Peninsula, Japan, AnnalidiGeofisica, 44, 261-272, 2000.
Ogawa, Y., M. Mishina, T. Goto, H. Satoh, N. Oshiman, T.
Kasaya, Y. Takahashi, T. Nishitani, S. Sakanaka, M. Uyeshima, Y. Takahashi, Y. Honkura, and M. Matsushima, Magnetotelluric imaging of fluids in intraplate earthquake zones, NE Japan back arc, Geophysical
Research Letters, 28, No.19, 3741-3744, 2001.
Murakami, H., T. Hashimoto, N. Oshiman, S. Yamaguchi, Y. Honkura,
and N. Sumitomo, Electrokinetic phenomena associated
with the water injection experiment at the Nojima
fault in Awaji Island, Japan, The Island Arc, 10,
244-251, 2001.
Matsushima, M., Y. Honkura, N. Oshiman, S. Baris, M. K. Tuncer, S. B.Tank,
C. Celik, F. Takahashi, M. Nakanishi, R. Yoshimura, R. Pektas, T.Komut,
A. Ito, Y. Iio, and A. M. Isikara, Seismo-electromagnetic effectassociated
with the Izmit Earthquake and its aftershock, Bull. Seism.Soc. Am., 92,
1, 350-360, 2002.
Honkura, Y., M.Matsushima, N.Oshiman, M.K.Tuncer, S.Baris, A.Ito, Y.Iio,and
A.M.Isikara, Small electric and magnetic signals observed before thearrival
of seismic wave, Earth, Planets and Space, 54, e9-e12, 2002.
Chandrasekhar, E., N.Oshiman and K.Yumoto, On the role of oceans in the
geomagnetic induction by Sq along the 210o magnetic meridian region, Earth,
Planets and Space, 55, 315-326, 2003
Tank,S.B., Y.Honkura, Y.Ogawa, N.Oshiman, M.K.Tuncer, M.Matsushima, C.Celik,
E.Tolak, and A.M.Isikara, Resistivity structure in the western part of
the fault rupture zone associated with the 1999 Izmit earthquake and its
seismogenic implication, Earth, Planets and Space, 55, 437-442, 2003.
Aizawa, K., R. Yoshimura, and N. Oshiman, Splitting of the Philippine Sea
Plate and a magma chamber beneath Mt. Fuji, Geophys. Res. Lett., 31, L09603,
doi:10.1029/2004GL019477, 2004.
Kasaya, T. and N. Oshiman, Lateral inhomogeneity deduced from 3-D magnetotelluric
modeling around the hypocentral area of the 1984 Western Nagano Prefecture
earthquake, central Japan, Earth, Planets and Space, 56, 547-552, 2004.
A. Okubo and N. Oshiman, Piezomagnetic Field in a Non-Uniform Elastic Medium
-- Piezomagnetic Field Associated with a Numerical Solution of the Mogi
Model in a Non-Uniform Elastic Medium --, Geophys. J. Int. 159, 509-520,
2004.
Goto, T., Y. Wada, N. Oshiman and N. Sumitomo, Resistivity structure of
a seismic gap along the Atotsugawa Fault, Japan, Physics of The Earth and
Planetary Interiors, 148, (Issue 1), 55-72, doi:10.1016/j.pepi.2004.08.007,
2005.
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, A.W. Hurst, Hydrothermal system beneath Mt. Fuji volcano
inferred from magnetotellurics and electric self-potential, Earth and Planetary
Science Letters, 235, 343-355, doi:10.1016/j.epsl.2005.03.023, 2005.
Tank, S. B., Yoshimori Honkura, Yasuo Ogawa, Masaki Matsushima, Naoto Oshiman,
M. Kemal Tuncer, Cengiz Celik, Elif Tolak, A. M. Isikara, Magnetotelluric
imaging of the fault rupture area of the 1999 Izmit (Turkey) earthquake,
Physics of The Earth and Planetary Interiors, 150, 213-225, doi:10.1016/j.pepi.2004.08.033,
2005.
K. Yamazaki and N. Oshiman, A method for representing geomagnetic total
force field in a small region with special attention to discontinuities
of data, Earth, Planets and Space, 58, 1519-1523, 2006.
Murakami, H., Oshiman, N., Yamaguchi, S., Hashimoto, T., and Yoshimura,
R., Time evolution of hydraulic and electrokinetic parameters around the
Nojima fault, Japan, estimated by an electrokinetic method, Tectonophysics,
443, 200-208, 2007.( doi: 10.1016/j.tecto.2007.01.019).
Satoru Yamaguchi, Hideki Murakami, Hisanori Iwamoto, Kazuhiro Takemoto,
Kazuya Kitada, Ichiro Shiozaki, Naoto Oshiman, and Shigehiro Katoh, Two-dimensional
resistivity structure of the fault associated with the 2000 Western Tottori
earthquake, Earth Planets Space, 59, 1211-1217, 2007.
Yoshimura, R., N. Oshiman, M. Uyeshima, Y. Ogawa, M. Mishina, H. Toh, S.
Sakanaka, H. Ichihara, I. Shiozaki, T. Ogawa, T. Miura, S. Koyama, Y. Fujita,
K. Nishimura, Y. Takagi, M. Imai, R. Honda, S. Yabe, S. Nagaoka, M. Tada,
and T. Mogi, Magnetotelluric observations around the focal region of the
2007 Noto Hanto Earthquake (Mj 6.9), Central Japan, Earth Planets Space,
60, 117-122, 2008
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, Magnetotelluric transect across the Niigata-Kobe Tectonic Zone,
central Japan: A clear correlation between strain accumulation and resistivity
structure, Geophys. Res. Lett., 36, L20311, doi:10.1029/2009GL040016, 2009
Satoru Yamaguchi, Makoto Uyeshima, Hideki Murakami, Sirou Sutoh, Daichi
Tanigawa, Tsutomu Ogawa, Naoto Oshiman, Ryokei Yoshimura, Koki Aizawa,
Ichiro Shiozaki, and Takafumi Kasaya, Modification of the Network-MT method
and its first application in imaging the deep conductivity structure beneath
the Kii Peninsula, southwestern Japan, Earth Planets Space, 61, No.8, 957-971,
2009.
Matsumura M., Iyemori T., Tanaka Y., Han D., Nose M., Utsugi M., Oshiman N., Shinagawa H., Odagi Y., Tabata Y., Acoustic resonance between ground and thermosphere, Data Science Journal, 8, 16831470, 10.2481/dsj.8.S68, 2009.
Satoru Yamaguchi, Yasuo Ogawa, Kiyoshi Fuji-ta, Naoto Ujihara, Hiroo Inokuchi, and Naoto Oshiman, Audio-frequency magnetotelluric imaging of the Hijima Fault, Yamasaki Fault System, southwest Japan, Earth Planets Space, 62, 401-411, 2010.
Maki Hata, Naoto Oshiman, Ryokei Yoshimura, Yoshikazu Tanaka, and Makoto Uyeshima, Fluid upwelling beneath arc volcanoes above the subducting Philippine Sea Plate: Evidence from regional electrical resistivity structure, Journal of Geophysical Research, 117, B7, doi:10.1029/2011JB009109, 2012.
Cengiz Celik, Mustafa Kemal Tuncer, Elif Tolak-Ciftci, Metin Zobu, Naoto Oshiman and S. Bulent Tank, Solar and lunar geomagnetic variations in the northwestern part of Turkey, Geophysical Journal International, 189, Issue 1, 391-399, doi:10.1111/j.1365-246X.2012.05382.x, 2012
Yoshimori Honkura, Naoto Oshiman, Masaki Matsushima, Serif Baris Mustafa Kemal Tuncer, Sabri Bulent Tank, Cengiz Celik and Elif Tolak Ciftci, Rapid changes in the electrical state of the 1999 Izmit earthquake rupture zone, Nature Communications, 4, Article number:2116, doi:10.1038/ncomms3116, 2013
Tulay Kaya, Takafumi Kasaya, S. Bulent Tank, Yasuo Ogawa, M. Kemal Tuncer, Naoto Oshiman, Yoshimori Honkura and Masaki Matsushima, Electrical characterization of the North Anatolian Fault Zone underneath the Marmara Sea, Turkey by ocean bottom magnetotellurics, Geophys. J. Int., 193, (2): 664-677 (first published online February 22, 2013) doi:10.1093/gji/ggt025, 2013.
