Nakamura, Norihiro (Solid Earth Geomagnetism)



Research Interests:
¡¦Magnetic properties of pseudotachylites in asteroids and faults
¡¦Geomagnetic field intensity during early Earth
 ¡¦Meteorite impact-induced plasma field around crater
 ¡¦Lightening strikes and fulgarite
 ¡¦Shear band formation in S-C mylonite¡¡& its significance for earthquake nucleation
 ¡¦Differential geometries and rock magnetism
 ¡¦Granite emplacement and its magnetic fabrics
 ¡¦Rockmagnetic quantification of Earthquake lightning current intensity
 ¡¦High pressure and low temperature transition of magnetite by diamond anvil cell
 ¡¦Extraterrestrial magnetism linking proto-planetary disks and planet formation
 ¡¦Development of scanning MI magnetic microscope and stepwise-selective laser demagnetizer

My current research interest:
Earth and planetary paleomagnetism to understand a magnetic field generation in early solar nebula, early Earth, seismic faulting and meteorite impact through field- and laboratory-based studies with an apparatus development of in-situ scanning magnetic microscopy and laser demagnetization.

¢¡Uehara, M. and Nakamura, N. (submitted), An in-situ magnetic field images during demagnetizations through a magneto-impedance (MI) scanning magnetic microscope. Studia Geophysica et Geodaetica
¢¡Uehara, M. and Nakamura, N. (in press), A novel scanning magnetic microscope system utilizing magneto-impedance (MI) sensor for non-destructive diagnostic tool of geological samples. Review of Scientific Instruments.
¢¡Uehara, M. and Nakamura, N. (2006), Experimental constraints on magnetic stability of chondrules and the paleomagnetic significance of dusty olivines. Earth and Planetary Science Letters. v.250, 292-305. (PDF file)
¢¡Usui, Y., Nakamura, N. and Yoshida, T. (2006), N. Magnetite microexsolutions in silicate and magmatic flow fabric of the Goyozan granitoid (NE Japan): significance of partial remanence anisotropy. Journal of Geophysical Research. v.111, doi:10.1029/2005JB004183. (PDF file)
¢¡Nakamura, N. and Iyeda, Y. (2005), Magnetic properties and paleointensity of pseudotachylytes from the Sudbury structure: Petrologic control. Tectonophysics, v.402, p.141-152.(PDF file)
¢¡Nakamura, N. and Borradaile, J. G.(2004), Metamorphic control of magnetic susceptibility and magnetic fabrics: a 3-D projection. Journal of Geological Society of London, v.238, p.61-68.(PDF file)
¢¡Nakamura, N., Hirose, T. and Borradaile, G.J. (2002), Laboratory verification of submicron magnetite production in pseudotachylytes; relevance for paleointensity studies, Earth and Planetary Science Letters, v.201, p. 13-18.(PDF file)
¢¡Nakamura, N. and Nagahama, H., (2002), Tribochemical wearing in S-C mylonites and its implication to lithosphere stress level, Earth, Planets and Space, v.54, p.1103-1108. (PDF file).
¢¡Nakamura, N. and Borradaile, J. G. (2001), Strain, anisotropy of anhysteretic remanence, and anisotropy of magnetic susceptibility in a slaty tuff, Physics of the Earth and Planetary Interiors, v.125, p.85-93.(PDF file)
¢¡Nakamura, N. and Nagahama, H. (2001), Flow and slip regimes in S-C mylonites: a geological implication for seismogenic processes. In: Abstracts of International Symposium on slip and flow processes in and below the seismogenic region, pp. 68(1-7).
¢¡Nakamura, N. and Borradaile, J. G. (2001), Do reduction spheroids predate finite strain? A magnetic diagnosis of Cambrian slates in North Wales, Tectonophysics, v.340, p.133-139.(PDF file)
¢¡Nakamura, N. and Nagahama, H. (2001), Changes in magnetic and fractal properties of fractured granites near the Nojima fault, Japan, The Island Arcs, v.10, p.486-494.(PDF file)
¢¡Nakamura, N. and Nagahama, H. (2001), Tectono and chemico-magnetic effects in tectonically active regions. In: Earthquake Termodynamics and Phase Transformations in the Earth's Interior (Eds. R. Teisseyre and E. Majewski), Academic Press, New York., 553-564.
¢¡Nakamura, N. and Nagahama, H. (2000), Curie symmetry principle: Do it constrain for the analysis of structural geology?, FORMA, v.15, p. 87-94.
¢¡Nakamura, N. and Nagahama, H. (1998), Geomagnetic field perturbation and fault creep motion: A new tectonomagnetic model. In: Atomospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes (Ed. M. Hayakawa), pp.307-323, TERRAPUB
¢¡Nakamura, N. and Nagahama, H. (1997), Anisotropy of magnetic susceptibility and plastic strain of rocks -a Finsler geometrical approach-, Acta Geophysica Polonica, 333-354.
¢¡Nakamura, N. and Nagahama, H. (1997), Magnetic susceptibility and plastic strain of rocks by the differential geometric theory of the physical interaction field, Physics and Chemistry of the Earth, v. 22, 167-173.
¢¡Nakamura, N., Otsuki, K. and Nagahama, H. (1996), A spring-network model of fault system evolution, In: Structural Geology and Personal Computers (Ed. D.D. Paor), pp. 343-358, Elsevior Sci. Pub., Amsterdam.

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C.V.

Who I Am
I am a research associate at Tohoku University where I work as a structural geologist. My main research interests center on understanding the tectonomagnetic process on the Earth surface, including an electromagnetic phenomena of earthquakes and volcanos.

Why I Am Interested in This
I have been fascinated by a dynamic activity of the Earth since I saw lava flows at the Miyake Island, Japan 1986 on TV. Besides, I have experienced a huge number of an earthquake shaking since I was a kid. These activities originate my sense of wonder to nature. This is my why.

What I will Do
Who knows!