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<Refereed Papers>
HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara,
Nozomu Takeuchi, 2023.
Characterizing the seafloor sediment layer using teleseismic body waves
recorded by ocean bottom seismometers.
Journal of Geophysical Research: Solid Earth,
128, e2023JB027616.
[journal site]
Hyunsun Kang, YoungHee Kim, Shu-Huei Hung, Pei-Ying Patty Lin, Takehi Isse,
Hitoshi Kawakatsu, Sang-Mook Lee, Hisashi Utada, Nozomu Takeuchi,
Hajime Shiobara, Hiroko Sugioka, Seung-Sep Kim, 2023.
Seismic velocity structure of upper mantle beneath the oldest Pacific seafloor:
Insights from finite-frequency tomography. Geochemistry,
Geophysics, Geosystems,
24, e2022GC010833.
[journal site]
Nozomu Takeuchi, Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara,
Hiroko Sugioka, Aki Ito, Hisashi Utada, Tomoaki Yamada, 2023.
Olivine Fabrics in the Oceanic Lithosphere Constrained by Pn Azimuthal Anisotropy,
Journal of Geophysical Research: Solid Earth, 128,
e2023JB026428.
[journal site]
Yuki Kawano, Takehi ISSE, Akiko Takeo, Hitoshi Kawakatsu, Manabu Morishige,
Hajime Shiobara, Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim,
Hisashi Utada, Sang-Mook Lee, 2023.
Seismic Structure of the Lithosphere-Asthenosphere System Beneath the Oldest Seafloor
Revealed by Rayleigh-Wave Dispersion Analysis,
Journal of Geophysical Research: Solid Earth, 128,
e2023JB026529.
[journal site]
Sanshiro Enomoto, Kenta Ueki, Tsuyoshi Iizuka, Nozomu Takeuchi,
Akiko Tanaka, Hiroko Watanabe, Satoru Haraguchi, 2023.
Trace Element Abundance Modeling with Gamma Distribution for Quantitative
Balance Calculations,
Core-Mantle Co-Evolution: An Interdisciplinary Approach,
Geophysical Monograph 276,
17--29.
[journal site]
Tae-shin Kim, Ji-hoon Park, Ji-won Ko, Se-young Oh, Michael Witek,
Sung-Joon Chang, Sang-Mook Lee, YoungHee Kim, Hisashi Utada,
Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse,
Nozomu Takeuchi, Hiroko Sugioka, 2023.
Characteristics of Background Noise in the Oldest-1 Array Deployed on the Oldest Part of the Pacific Plate,
Bulletin of the Seismological Society of America,
113(4), 1772--1793.
[journal site]
Yuki Kawano, Takehi Isse, Hitoshi Kawakatsu, Hajime Shiobara,
Nozomu Takeuchi, Hiroko Sugioka, YoungHee Kim,
Hisashi Utada, Sang-Mook Lee, 2023.
Noise reduction from vertical component seismograms recorded by broadband ocean bottom seismometers deployed at the western Pacific,
Bulletin of the Seismological Society of America,
113(4), 1759--1771.
[journal site]
Haruka Nagai, Nozomu Takeuchi, Hitoshi Kawakatsu,
Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito,
Hisashi Utada, 2023.
Inference of velocity structures of oceanic crust and
upper mantle from surface waveform fitting,
Geophy. J. Int., 233, 1974-1986.
[journal site]
Ji-won Ko, Tae-shin Kim, Ji-hoon Park, Se-young Oh, Sung-Joon Chang,
Ki Young Kim, Sang-Mook Lee, YoungHee Kim, Hisashi Utada,
Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Nozomu Takeuchi, 2021.
Analysis on microseism characteristics by typhoon `HAGIBIS' using
land and ocean-bottom seismometers,
J. Geol. Soc. Korea, 57, 339--352.
[journal site]
Ohtaki, T., Tanaka, S., Kaneshima, S., Siripunvaraporn, W., Boonchaisuk, S., Noisagool, S.,
Kawai, K., Kim, T., Suzuki, Y., Ishihara, Y., Miyakawa, K., Takeuchi, N., 2021.
Seismic velocity structure of the upper inner core in the north polar region,
Phys. Earth Planet. Int., 311, 106636.
[journal site]
Toh, A., Chen, W.-J., Takeuchi, N., Dreger, D., Chi, W.-C., & Ide, S., 2020.
Influence of a subducted oceanic ridge on the distribution of shallow VLFEs in the Nankai Trough as revealed by moment tensor inversion and cluster analysis,
Geophys. Res. Lett., 47, e2020GL087244,
doi.org/10.1029/2020GL087244.
[journal site]
Takeuchi, N., Kawakatsu, H., Shiobara, H., Isse, T., Sugioka, H., Ito, A.,
& Utada, H., 2020.
Inversion of Longer-Period OBS Waveforms for P Structures in the Oceanic Lithosphere and Asthenosphere,
J. Geophys. Res. Solid Earth, 125, e2019JP018810,
doi.org/10.1029/2019JB018810.
[journal site]
Takeuchi, N., Ueki, K., Iizuka, T., Nagao, J.,
Tanaka, A., Enomoto, S., Shirahata, Y., Watanabe, H.,
Yamano., M, & Tanaka, H.K.M., 2019.
Numerical data of probabilistic 3D lithological map of Japanese crust,
Data in Brief, 26, 104497.
[journal site]
Iritani, R., Kawakatsu, H., & Takeuchi, N., 2019.
Sharpness of the hemispherical boundary in the inner core
beneath the northern Pacific,
Earth Planet. Sci. Lett., 527, 115796.
[journal site]
Thorne, M., Takeuchi, N., & Shiomi, K., 2019.
Melting at the edge of a slab in the deepest mantle,
Geophy. Res. Lett., 46, 8000-8008.
[journal site]
Sunil, R., Takeuchi, N., Srinagesh, D.,
Kumar, M. R., & Kawakatsu, H., 2019.
Topography of the western Pacific LLSVP constrained by S
wave multipathing,
Geophy. J. Int., 218, 190-199.
[journal site]
Takeuchi, N., Ueki, K., Iizuka, T., Nagao, J.,
Tanaka, A., Enomoto, S., Shirahata, Y., Watanabe, H.,
Yamano., M, & Tanaka, H.K.M., 2019.
Stochastic Modeling of 3-D Compositional Distribution
in the Crust with Bayesian Inference and Application
to Geoneutrino Observation in Japan,
Phys. Earth Planet. Int., 288, 37-57.
[journal site]
Long, X., Kawakatsu, H., & Takeuchi, N., 2018.
A sharp structural boundary in lowermost mantle
beneath Alaska detected by core phase differential travel
times for the anomalous South Sandwich Islands to Alaska Path,
Geophys. Res. Lett., 45,
176-184, doi:10.1002/2017GL075685.
[journal site]
Takeuchi, N., Kawakatsu, H., Shiobara, H., Isse, T.,
Sugioka, H., Ito, A. & Utada, H., 2017.
Determination of Intrinsic Attenuation in the Oceanic
Lithosphere-Asthenosphere System,
Science, 358,
1593-1596, doi:10.1126/science.aao3508.
[reprint] [abstract] [full text]
Akuhara, T., Mochizuki, K., Kawakatsu, H. & Takeuchi, N., 2017.
A fluid-rich layer along the Nankai-trough megathrust fault off the Kii Peninsula inferred from receiver function inversion,
J. Geophys. Res. Solid Earth, 122,
6524-6537, doi:10.1002/2017JB013965.
[journal site]
Akuhara, T., Mochizuki, K., Kawakatsu, H. & Takeuchi, N., 2016.
Non-linear waveform analysis for water-layer response and its application to high-frequency receiver function analysis using OBS array,
Geophys. J. Int., 206,
1914-1920.
[journal site]
Wang, D., Takeuchi, N., Kawakatsu, H. & Mori, J., 2016.
Estimating high frequency energy radiation of large earthquakes by image deconvolution back-projection,
Earth. Planet. Sci. Lett., 449,
155-163.
[journal site]
Takeuchi, N., 2016.
Differential Monte Carlo Method for Computing Seismogram Envelopes and Their Partial Derivatives,
J. Geophys. Res., 121, 3428-3444,
doi:10.1002/2015JB012661.
[journal site]
Takeuchi, N., Kawakatsu, H., Tanaka, S., Obayashi, M., Chen,Y.J., Ning, J., Grand, S.P., Niu, F., Ni, J., Iritani, R., Idehara, K. & Tonegawa, T., 2014.
Upper Mantle Tomography in the Northwestern Pacific Region Using Triplicated P Waves,
J. Geophys. Res., 119, 7667-7685,
doi:10.1002/2014JB011161.
[pdf]
Iritani, R., Takeuchi, N. & Kawakatsu, H., 2014.
Intricate heterogeneous structures of the top 300 km of the Earth's inner core inferred from global array data: II. Frequency dependence of inner core attenuation and its implication,
Earth Planet. Sci. Lett., 405, 231-243.
[pdf]
Iritani, R., Takeuchi, N. & Kawakatsu, H., 2014.
Intricate heterogeneous structures of the top 300 km of the Earth's inner core inferred from global array data: I. Regional 1D attenuation and velocity profiles,
Phys. Earth Planet. Int., 230, 15-27.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
Takeuchi, N., 2012.
Detection of ridge-like structures in the Pacific
Large Low-Shear-Velocity Province,
Earth Planet. Sci. Lett., 319-320, 55-64.
[pdf]
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.
[pdf]
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.
[pdf]
Takeuchi, N., 2010.
Simulation of heterogeneity sections obtained by neutrino radiography,
Earth Planets Space, 62, 215-221.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
Takeuchi, N., 2007.
Whole mantle SH velocity model
constrained by waveform inversion based on three-dimensional Born
kernels, Geophys. J. Int., 169, 1153-1163.
[pdf]
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.
[pdf]
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.
[pdf]
Cao, A., Romanowicz, B. & Takeuchi, N., 2005.
An Observation of PKJKP: Inferences on Inner Core
Shear Properties,
Science, 308, 1453-1455.
[pdf]
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.
[pdf]
Takeuchi, N., 2005.
Finite Boundary Perturbation Theory for the Elastic Equation
of Motion, Geophys. J. Int., 160, 1044-1058.
[pdf]
Takeuchi, N. & Kobayashi, M., 2004.
Improvement of Seismological Earth Models by Using Data Weighting
in Waveform Inversion, Geophys. J. Int., 158, 681-694.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
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.
[pdf]
Geller, R.J. & Takeuchi, N., 1995.
A new method for computing highly accurate DSM synthetic seismograms,
Geophys.
J. Int., 123, 449-470.
[pdf]
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.
[pdf]
Cummins, P.R., Geller, R.J. & Takeuchi, N., 1994b.
DSM complete synthetic seismograms: P-SV, spherically symmetric,
case, Geophys. Res. Lett., 21, 1663-1666.
[pdf]
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