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D'' discontinuity
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<Refereed Papers>

Namiki, A., Sueyoshi, K. & Takeuchi, N., 2013.

Can a sheet-like low-velocity region form an elongated Large Igneous Province?, Geochem. Geophys. Geosys., 14, 3053-3066, doi:10.1002/ggge.20182.
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Yamada, R., Garcia, R.F., Lognonne, P., Kobayashi, N., Takeuchi, N., Nebut, T., Shiraishi, H., Calvet, M. & Ganepain-Beyneix, J., 2013.
On the possibility of lunar core phase detection using new seismometers for soft-landers in future lunar missions, Planet. Space Sci., 81, 18-31.
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Idehara, K., Tanaka, S. & Takeuchi, N., 2013.
High-velocity anomaly adjacent to the western edge of the Pacific low-velocity province, Geophys. J. Int., 192, 1-6.
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Takeuchi, N., 2012.
Detection of ridge-like structures in the Pacific Large Low-Shear-Velocity Province, Earth Planet. Sci. Lett., 319-320, 55-64.
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Iritani, R., Takeuchi, N. & Kawakatsu, H., 2010.
Seismic attenuation structure of the top half of the inner core beneath the northeastern Pacific, Geophys. Res. Lett., 37, L19303, doi:10.1029/2010GL044053.
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Takeuchi, N. & Obara, K., 2010.
Fine-scale topography of the D" discontinuity and its correlation to volumetric velocity fluctuations, Phys. Earth Planet. Int., 183, 126-135.
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Takeuchi, N., 2010.
Simulation of heterogeneity sections obtained by neutrino radiography, Earth Planets Space, 62, 215-221.
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Takeuchi, N., 2009.
A low-velocity conduit throughout the mantle in the robust component of a tomography model, Geophys. Res. Lett., 36, L07306, doi:10.1029/2009GL037590.
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Yamada, R., Yamada, I., Shiraishi, H., Tanaka, S., Takagi, Y., Kobayashi, N., Takeuchi, N., Ishihara, Y., Murakami, H., Yomogida, K., Koyama, J., Fujimura, A. & Mizutani, H., 2009.
Capability of the penetrator seismometer system for lunar seismic observation, Planet. Space Sci., 57, 751-763.
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Kazama, T., Kawakatsu, H. & Takeuchi, N., 2008.
Depth-dependent attenuation structure of the inner core inferred from short-period Hi-net data, Phys. Earth Planet. Int., 167, 155-160.
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Takeuchi, N., Morita, Y., Xuyen, N.D. & Zung, N.Q., 2008.
Extent of the low-velocity region in the lowermost mantle beneath the western Pacific detected by the Vietnamese broadband seismograph array, Geophys. Res. Lett., 35, L05307, doi:10.1029/2008GL033197.
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Takeuchi, N., 2007.
Whole mantle SH velocity model constrained by waveform inversion based on three-dimensional Born kernels, Geophys. J. Int., 169, 1153-1163.
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Kawai, K., Takeuchi, N., Geller, R.J. & Fuji, N., 2007.
Possible evidence for a double crossing phase transition in D'' beneath Central America from inversion of seismic waveforms, Geophys. Res. Lett., 34, L09314, doi:10.1029/2007GL02964.
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Kawai, K., Takeuchi, N. & Geller, R.J., 2006.
Complete synthetic seismograms up to 2 Hz for transversely isotropic spherically symmetric media, Geophys. J. Int., 164, 411-424.
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Cao, A., Romanowicz, B. & Takeuchi, N., 2005.
An Observation of PKJKP: Inferences on Inner Core Shear Properties, Science, 308, 1453-1455.
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To, A., Romanowicz, B., Capdeville, Y. & Takeuchi, N., 2005.
3D Effects of Sharp Boundaries at the Borders of the African and Pacific Superlumes: Observation and Modeling, Earth and Planet. Sci. Lett., 233, 137-153.
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Takeuchi, N., 2005.
Finite Boundary Perturbation Theory for the Elastic Equation of Motion, Geophys. J. Int., 160, 1044-1058.
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Takeuchi, N. & Kobayashi, M., 2004.
Improvement of Seismological Earth Models by Using Data Weighting in Waveform Inversion, Geophys. J. Int., 158, 681-694.
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Takeuchi, N. & Geller, R.J., 2003.
Accurate Numerical Methods for Solving the Elastic Equation of Motion for Arbitrary Source Locations, Geophys. J. Int., 154, 852-866.
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Takeuchi, N., Watada, S., Tsuboi, S., Fukao, Y., Kobayashi, M., Matsuzaki, Y. & Nakashima., N., 2002.
Application of Distributed Object Technology to Seismic Waveform Distribution, Seism. Res. Lett., 73, 166-172.
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Takeuchi, N. & Geller, R.J., 2000.
Optimally Accurate Second Order Time-Domain Finite Difference Scheme for Computing Synthetic Seismograms in 2-D and 3-D Media, Phys. Earth Planet. Int., 119, 99-131.
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Mizutani, H., Geller, R.J. & Takeuchi, N., 2000.
Comparison of accuracy and efficiency of time-domain schemes for calculating synthetic seismograms, Phys. Earth Planet. Int., 119, 75-97.
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Takeuchi, N., Geller, R.J. & Cummins, P.R., 2000.
Complete synthetic seismograms for 3-D heterogeneous Earth models computed using modified DSM operators and their applicability to inversion for Earth structure, Phys. Earth Planet. Int., 119, 25-36.
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Igel, H.,  Takeuchi, N., Geller, R.J., Megnin, C., Bunge, H.P, Clevede, E., Dalkolmo, J.  & Romanowicz, B., 2000.
The COSY Project: verification of global seismic modeling algorithms, Phys. Earth Planet. Int., 119, 3-23.
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Geller, R.J. & Takeuchi, N., 1998.
Optimally accurate second order time domain finite difference scheme for the elastic equation of motion, Geophys. J. Int., 135, 48-62.
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Cummins, P.R., Takeuchi, N. & Geller, R.J., 1997.
Computation of complete synthetic seismograms for laterally heterogeneous models using the Direct Solution Method, Geophys. J. Int., 130, 1-16.
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Takeuchi, N., Geller, R.J. & Cummins, P.R., 1996.
Highly accurate P-SV complete synthetic seismograms using modified DSM operators, Geophys. Res. Lett., 23, 1175-1178.
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Geller, R.J. & Takeuchi, N., 1995.
A new method for computing highly accurate DSM synthetic seismograms, Geophys. J. Int., 123, 449-470.
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Cummins, P.R., Geller, R.J., Hatori, T. & Takeuchi, N., 1994a.
DSM complete synthetic seismograms: SH, spherically symmetric, case, Geophys. Res. Lett., 21, 533-536.
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Cummins, P.R., Geller, R.J. & Takeuchi, N., 1994b.
DSM complete synthetic seismograms: P-SV, spherically symmetric, case, Geophys. Res. Lett., 21, 1663-1666.
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