- Publications

(First author)

- Nakahara, H., and K. Emoto., Deriving sensitivity kernels of coda-wave travel times to velocity changes based on the three-dimensional single isotropic scattering model, PAGEOPH, 174, 327-337, doi: 10.1007/s00024-016-1358-0, 2017.

- Nakahara, H., Seismic interferometry (2) Application (in Japanese), Zisin 2, 68, 125-133, 2015.

- Nakahara, H., Seismic interferometry (1) Historical development and principles (in Japanese), Zisin 2,68, 75-82, 2015.

- Nakahara, H, and M. Haney, Point spread functions for earthquake source imaging: An interpretation based on seismic interferometry, Geophys. J. Int., 202, 54-61, doi: 10.1093/gji/ggv109, 2015.

- Nakahara, H., Auto correlation analysis of coda waves from local earthquakes for detecting temporal changes in shallow subsurface structures: the 2011 Tohoku-Oki, Japan Earthquake, PAGEOPH, 172, 213-224, doi:10.1007/s00024-014-0849-0, 2015.

- Nakahara, H., Theoretical background for estimating attenuation structures with seismic interferometry (in Japanese with English
abstract), Zisin 2, 65, 243-249, 2013.

- Nakahara, H.,
Envelope inversion analysis for high-frequency seismic energy radiation from the 2011 off the Pacific coast of Tohoku earthquake (Mw 9.0), Bull. Seismol. Soc. Am, 103, 1348-1359, 2013.

- Nakahara, H., Formulation of the spatial auto-correlation (SPAC) method in dissipative media, Geophys. J. Int, 190, 1777-1783, 2012.

- Nakahara, H., H. Sato, T. Nishimura, and H. Fujiwara, Direct observation of rupture propagation during the 2011 off the Pacific coast of Tohoku, Japan, earthquake (Mw 9.0) using a small seismic array, Earth, Planets, and Space, 63, 589-594, 2011.

- Nakahara, H., and L. Margerin, Testing equipartition for S-wave coda using borehole records of local earthquakes, Bull. Seismol. Soc. Am.,101, 2243-2251, 2011.

- Nakahara, H., and K. Yoshimoto, Radiative transfer of elastic waves in two-dimensional isotropic scattering media: Semi-analytical approach for isotropic source radiation. Earth, Planets, and Space, 63, 459-468, 2011.

- Nakahara, H., and E. Carcole, Maximum-likelihood method for estimating coda Q and the Nakagami-
*m*parameter, Bull. Seismol. Soc. Am., 100, 3174-3182, 2010.

__Nakahara, H__., Seismogram envelope inversion for high-frequency seismic energy radiation from moderate to large earthquakes, in "Earth heterogeneities and scattering effects on seismic waves " (Eds. H. Sato and M. C. Fehler) in Vol. 50 of "Advances in Geophysics (Series Ed. R. Dmowska), Academic Press, 401-426, 2008.

- Nakahara, H., A derivation of the relation between spatial correlation and Green's function based on the slowness method: Isotropic incidence of random scalar waves (in Japanese with English abstract), Zisin 2, 59, 159-166, 2006.

(Co-author)

- Takano, T., T. Nishimura, and
__H. Nakahara__, Seismic velocity changes concentrated at the shallow structure as inferred from correlation analyses of ambient noise during volcano deformation at Izu-Oshima, Japan, J. Geophys.l Res.: Solid Earth, 122, 6721-6736, doi: 10.1186/s40623-017-0613-7, 2017.

- Hirose, T..,
__H. Nakahara__, and T. Nishimura，Combined use of repeated active shots and ambient noise to detect temporal changes in seismic velocity: application to Sakurajima volcano, Japan, Earth, Planets and Space, 69, 42, doi**:**10.1186/s40623-017-0613-7, 2017.

- Pacheco, K., T. Nishimura, and
__H. Nakahara__, Seismic velocity changes of P and S waves associated with the 2011 Tohoku-Oki earthquake (Mw9.0) as inferred from analyses of repeating earthquakes, Geophys. J. Int., doi: 10.1093/gji/ggx043, 2017.

- Sawazaki, K.,
__H. Nakahara__, and K. Shiomi, Preliminary estimation of high-frequency (4-20 Hz) energy released from the 2016 Kumamoto, Japan, earthquake sequence, Earth, Planets and Space, 68, doi:10.1186/s40623-016-0557-3, 2016.

- Fukushima, R.,
__H. Nakahara__, and T. Nishimura, Estimating S-wave attenuation in sediments by deconvolution analysis of KiK-net borehole seismograms, Bull. Seismol. Soc. Am., 106, 552-559, .doi:10.1785/0120150059, 2016.

- Haney, M. M. and
__H. Nakahara__, Erratum to Surface‐Wave Green's Tensors in the Near Field, Bull. Seismol. Soc. Am.,106, 816-818, doi:10.1785/0120150349, 2016.

- Hobiger, M., U. Wegler,K. Shiomi, and
__H. Nakahara__, Coseismic and post-seismic velocity changes detected by Passive Image Interferometry: comparison of one great and five strong earthquakes in Japan, Geophys. J. Int., 205, 1053-1073, doi:10.1093/gji/ggw066, 2016.

- Takano, T., T. Nishimura,
__H. Nakahara__, Y. Ohta, and S. Tanaka, Seismic velocity changes caused by the Earth tide: Ambient noise correlation analyses of small-array data, Geophys. Res. Lett., 41, 6131-6136, doi:10.1002/2014gl060690, 2014.

- Hobiger, M., U. Wegler, K. Shiomi, and
__H. Nakahara__, Single-station cross-correlation analysis of ambient seismic noise:

Application to stations in the surroundings of the 2008 Iwate-Miyagi Nairiku earthquake, Geophys. J. Int., 198, 90-109, doi: 10.1093/gji/ggu115, 2014 .

- Takagi, R.,
__H. Nakahara__, T. Kono, and T. Okada, Separating body and Rayleigh waves with cross terms of the cross-correlation tensor of ambient noise, J. Geophys. Res., 119, 2005-2018, doi:10.1002/2013JB010824, 2014.

- Haney, M. and
__H. Nakahara__, Surface wave Green's tensors in the near-field, Bull. Seismol. Soc. Am., 104, 1578-1586, doi: 10.1785/0120130113, 2014.

- Hobiger, M., U. Wegler, K. Shiomi, and
__H. Nakahara__, Coseismic and postseismic elastic wave velocity variations caused by the 2008 Iwate-Miyagi Nairiku earthquake, Japan, J. Geophys. Res., 117, B09313, doi:10.1029/2012JB009402, 2012.

- Haney, M. M., T. D. Mikesell, K. van Wijk, and
__H. Nakahara__, Extension of the spatial autocorrelation (SPAC) method to mixed-component correlations of surface waves, Geophys. J. Int., 191, 189-206, doi:10.1111/j.1365-246X.2012.05597.x, 2012.

- Takagi, R., T. Okada,
__H. Nakahara__, N. Umino, and A. Hasegawa, Coseismic velocity change in and around the focal region of the 2008 Iwate-Miyagi Nairiku earthquake,J. Geophys. Res.,117, B06315, doi:10.1029/2012JB009252, 2012.

- Wegler U. ,
__H. Nakahara__, C. Sens-Schoenfelder, M. Korn, and K. Shiomi, Sudden drop of seismic velocity after the 2004 Mw6.6 mid-Niigata earthquake, Japan, observed with Passive Image Interferometry, J. Geophys. Res., 114, B06305, doi:10.1029/2008JB005869, 2009.

- Sawazaki K., H. Sato,
__H. Nakahara__, and T. Nishimura, Time-lapse changes of seismic velocity in the shallow ground caused by strong ground motion shock of the 2000 Western-Tottori Earthquake, Japan, as revealed from coda deconvolution analysis,

Bull. Seism. Soc. Am., 99, 352-366, doi:10.1785/0120080058, 2009

- Sawazaki, K., H. Sato,
__H. Nakahara__, T. Nishimura, Temporal changes in site response caused by earthquake strong motion as revealed from coda spectral ratio measurement, Geophys. Res. Lett., 33, L21303, 2006.

- Nishimura, T., S. Tanaka, T. Yamawaki, H. Yamamoto, T. Sano, M. Sato,
__H. Nakahara__, N. Uchida, S. Hori and H. Sato, Temporal changes in seismic velocity of the crust around Iwate volcano, Japan, as inferred from analyses of repeated active seismic experiment data from 1998 to 2003, Earth Planets Space,57,491-505, 2005.

- Petukhin, A.G.,
__H. Nakahara__, and A. A. Gusev, Inversion of the high-frequency source radiation of M6.8 Avachinsky Gulf, Kamchatka, earthquake using empirical and theoretical envelope Green functions, Earth Planets Space, 56, 921-925, 2004.

- Uchida, N., T. Nishimura, K. Yoshimoto,
__H. Nakahara__, H. Sato, M. Ohtake, S. Tanaka, and H. Hamaguchi, Temporal change of seismic-wave velocity associated with the 1998 Northern Iwate Prefecture, Japan, earthquake (in Japanese with English abstract) ，Zisin 2，55，193-206，2002．

- Hoshiba, M., A. Rietbrock, F. Scherbaum,
__H. Nakahara__, and C. Haberland, Scattering attenuation and intrinsic absorption using uniform and depth dependent model- Application to full seismogram envelope recorded in Northern Chile, J. Seismology, 5, 157-179, 2001.

- Ohtake, M., and
__H. Nakahara__, Seasonality of great earthquake occurrence at the northwest margin of the Philippine sea plate, PAGEOPH, 155, 689-700, 1999.

- Sato, H.,
__H. Nakahara__, T. Nishimura, and M. Ohtake, Seismogram envelope inversion for the energy radiation from an earthquake fault on the basis of the radiative transfer theory, Proceedings of the 4th SEGJ International Symposium, 43-48, 1998.

- Sato, H.,
__H. Nakahara__, and M. Ohtake, Synthesis of scattered energy density for non-spherical radiation from a point shear dislocation source based on the radiative transfer theory, Phys. Earth Planet. Inter., 104, 1-13, 1997.

- Nishimura, T.,
__H. Nakahara__, H. Sato, and M. Ohtake, Source process of the 1994 far east off Sanriku earthquake, Japan, as inferred from a broad-band seismogram, Tohoku Geophys. J., 34, 121-134, 1996.

- Publications without referee

__Nakahara, H.__, Monitoring of subsurface structure with seismic interferometry:The 2005 West off Fukuoka prefecture Earthquake (Mj7.0), Report of CCEP, 83, 654-656, 2010.

__Nakahara, H__., High-frequency envelope inversion analysis of the 2003 Miyagi-Ken-Oki earthquake (Mj 7.0)，Chikyu Monthly, 27, 39-43, 2005．

__Nakahara, H__., T. Nishimura, H. Sato, M. Ohtake, S. Kinoshita, S. Miura, S. Ueki, and H. Hamaguchi, Strong ground motion record in the vicinity of the 1998 Iwate-Ken-Hokubu, Japan, earthquake, Chikyu Monthly, 21, 322-326, 1999.

- Joint Observation

- Tanaka, S., et al., Seismic exploration at Iwate volcano with active sources -The outline of the exploration and the first arrival time data-，Bull. Earthq. Res. Inst. Univ. Tokyo, 77，1-25，2002．

- Research group for deep structure of Nagamachi-Rifu fault, Seismic reflection survey in Nagamachi-Rifu fault, Sendai, northeastern Japan, Tohoku Geophys. J., 36, 311-356, 2002.

- Hirata, N., et al., Urgent joint observation of aftershocks of the 1995 Hyogo-ken Nanbu earthquake, J. Phys. Earth, 44, 317-328, 1996.

- Tsutsui, T., et al, Seismic velocity structure beneath Kirishima volcanoes with diffrential analysis of explosion experiment，Kazan，41，227-241，1996．

- Kagiyama, T., et al., 1994 explosion experiment in Kirishima volcanoes, Bull. Earthq. Res. Inst. Univ. Tokyo, 70，33−60，1995．