World's Best Scientists 2026 revealed!
Toru Matsuzawa

Toru Matsuzawa

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 46 4316 3970 100 91 236 6482

Toru Matsuzawa publications per year

The chart shows the history of publications by Toru Matsuzawa between 1985 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Toru Matsuzawa published across 41 years, from 1985 to 2025, averaging 6.1 papers a year. Output peaked at 17 publications in 2014. 10 of the 252 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1985 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2014. 1985: 2 publications 1986: 2 publications 1987: 1 publication 1988: 0 publications 1989: 3 publications 1990: 2 publications 1991: 1 publication 1992: 4 publications 1993: 0 publications 1994: 3 publications 1995: 2 publications 1996: 1 publication 1997: 3 publications 1998: 1 publication 1999: 1 publication 2000: 0 publications 2001: 8 publications 2002: 4 publications 2003: 6 publications 2004: 5 publications 2005: 7 publications 2006: 8 publications 2007: 13 publications 2008: 8 publications 2009: 12 publications 2010: 7 publications 2011: 10 publications 2012: 8 publications 2013: 12 publications 2014: 17 publications 2015: 6 publications 2016: 10 publications 2017: 16 publications 2018: 15 publications 2019: 11 publications 2020: 15 publications 2021: 11 publications 2022: 2 publications 2023: 5 publications 2024: 7 publications 2025: 3 publications
1985 2025

252 publications in total across all disciplines

View publications per year as a table
Toru Matsuzawa: publications per year, 1985 to 2025
Year Publications
1985 2
1986 2
1987 1
1988 0
1989 3
1990 2
1991 1
1992 4
1993 0
1994 3
1995 2
1996 1
1997 3
1998 1
1999 1
2000 0
2001 8
2002 4
2003 6
2004 5
2005 7
2006 8
2007 13
2008 8
2009 12
2010 7
2011 10
2012 8
2013 12
2014 17
2015 6
2016 10
2017 16
2018 15
2019 11
2020 15
2021 11
2022 2
2023 5
2024 7
2025 3
Total 252
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Toru Matsuzawa publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Toru Matsuzawa sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 228–237 publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 236 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262 236
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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Toru Matsuzawa D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Toru Matsuzawa sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 46 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 46 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212 46
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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Overview

Toru Matsuzawa is affiliated with Tohoku University in Japan, focusing research primarily within Earth and Planetary Sciences. Their work spans a range of subfields with a strong emphasis on geophysics, alongside interdisciplinary contributions to artificial intelligence, emergency medical services, general health professions, and public health, environmental and occupational health.

The research topics covered by Matsuzawa include earthquake and tectonic studies, high-pressure geophysics and materials, geological and geochemical analysis, earthquake detection and analysis, seismology and earthquake studies, seismic waves and analysis, and disaster response and management.

Recent scholarly articles authored or coauthored by Matsuzawa demonstrate a focus on seismological processes and earthquake behavior in Japan. These works include:

  • Upward Earthquake Swarm Migration in the Northeastern Noto Peninsula, Japan, Initiated From a Deep Ring-Shaped Cluster: Possibility of Fluid Leakage From a Hidden Magma System (2023), Journal of Geophysical Research Solid Earth
  • Focal mechanisms and the stress field in the aftershock area of the 2018 Hokkaido Eastern Iburi earthquake (MJMA = 6.7) (2021), Earth Planets and Space
  • Stress Release Process Along an Intraplate Fault Analogous to the Plate Boundary: A Case Study of the 2017 M 5.2 Akita-Daisen Earthquake, NE Japan (2020), Journal of Geophysical Research Solid Earth
  • Influence of crustal lithology and the thermal state on microseismicity in the Wakayama region, southern Honshu, Japan (2021), Earth Planets and Space
  • The 2021 Mw7.0 and Mw6.7 Miyagi-Oki Earthquakes Nucleated in a Deep Seismic/Aseismic Transition Zone: Possible Effects of Transient Instability Due To the 2011 Tohoku Earthquake (2022), Journal of Geophysical Research Solid Earth

The frequent coauthors collaborating with Matsuzawa include Keisuke Yoshida, Tomomi Okada, Shin'ichi Sakai, Naoki Uchida, and Satoshi Hirahara, reflecting ongoing partnerships in related research areas.

Matsuzawa's work is published predominantly in scientific journals renowned for geophysical and earth sciences research. Their most frequent publication venues are:

  • Earth Planets and Space
  • Journal of Geophysical Research Solid Earth
  • Scientific Reports
  • Zenodo (CERN European Organization for Nuclear Research)
  • Journal of Disaster Research

Best Publications

  • Three‐dimensional structure of Vp, Vs, and Vp/Vs beneath northeastern Japan: Implications for arc magmatism and fluids

    Junichi Nakajima;Toru Matsuzawa;Akira Hasegawa;Dapeng Zhao

  • Repeating earthquakes and interplate aseismic slip in the northeastern Japan subduction zone

    Toshihiro Igarashi;Toshihiro Igarashi;Toru Matsuzawa;Akira Hasegawa

  • Spatial distribution of focal mechanisms for interplate and intraplate earthquakes associated with the subducting Pacific plate beneath the northeastern Japan arc: A triple‐planed deep seismic zone

    Toshihiro Igarashi;Toru Matsuzawa;Norihito Umino;Akira Hasegawa

  • Upper mantle velocity structure estimated from PS- converted wave beneath the north-eastern Japan Arc

    Toru Matsuzawa;Norihito Umino;Akira Hasegawa;Akio Takagi

  • Anomalous deepening of a seismic belt in the upper-plane of the double seismic zone in the Pacific slab beneath the Hokkaido corner: Possible evidence for thermal shielding caused by subducted forearc crust materials

    Saeko Kita;Tomomi Okada;Akira Hasegawa;Junichi Nakajima

  • Characteristic small-earthquake sequence off Sanriku, northeastern Honshu, Japan

    Toru Matsuzawa;Toshihiro Igarashi;Toshihiro Igarashi;Akira Hasegawa

  • Interplate quasi-static slip off Sanriku, NE Japan, estimated from repeating earthquakes

    Naoki Uchida;Toru Matsuzawa;Akira Hasegawa;Toshihiro Igarashi

  • Pre- and postseismic slow slip surrounding the 2011 Tohoku-oki earthquake rupture

    Naoki Uchida;Toru Matsuzawa

  • Existence of a seismic belt in the upper plane of the double seismic zone extending in the along-arc direction at depths of 70–100 km beneath NE Japan

    Saeko Kita;Tomomi Okada;Junichi Nakajima;Toru Matsuzawa

  • What controls interplate coupling?: Evidence for abrupt change in coupling across a border between two overlying plates in the NE Japan subduction zone

    Naoki Uchida;Junichi Nakajima;Akira Hasegawa;Toru Matsuzawa

  • Plate subduction, and generation of earthquakes and magmas in Japan as inferred from seismic observations: An overview

    Akira Hasegawa;Junichi Nakajima;Naoki Uchida;Tomomi Okada

  • MORPHOLOGY OF THE SUBDUCTING SLAB BOUNDARY IN THE NORTHEASTERN JAPAN ARC

    Dapeng Zhao;Toru Matsuzawa;Akira Hasegawa

  • Coupling coefficient, hierarchical structure, and earthquake cycle for the source area of the 2011 off the Pacific coast of Tohoku earthquake inferred from small repeating earthquake data

    Naoki Uchida;Toru Matsuzawa

  • sP depth phase at small epicentral distances and estimated subducting plate boundary

    Norihito Umino;Akira Hasegawa;Toru Matsuzawa

  • Seismic imaging of arc magma and fluids under the central part of northeastern Japan

    Junichi Nakajima;Toru Matsuzawa;Akira Hasegawa;Dapeng Zhao

  • Seismic attenuation beneath northeastern Japan: Constraints on mantle dynamics and arc magmatism

    Junichi Nakajima;Shuhei Hada;Erika Hayami;Erika Hayami;Naoki Uchida

  • Repeating earthquakes and quasi-static slip on the plate boundary east off northern Honshu, Japan

    Toru Matsuzawa;Naoki Uchida;Toshihiro Igarashi;Tomomi Okada

  • Source parameters of a M4.8 and its accompanying repeating earthquakes off Kamaishi, NE Japan: Implications for the hierarchical structure of asperities and earthquake cycle

    Naoki Uchida;Toru Matsuzawa;William L. Ellsworth;Kazutoshi Imanishi

  • Subducting plate boundary beneath the northeastern Japan arc estimated from SP converted waves

    Toru Matsuzawa;Toshio Kono;Akira Hasegawa;Akio Takagi

  • Tomographic imaging of hydrated crust and mantle in the subducting Pacific slab beneath Hokkaido, Japan: Evidence for dehydration embrittlement as a cause of intraslab earthquakes

    Junichi Nakajima;Yusuke Tsuji;Akira Hasegawa;Saeko Kita

  • Pre- and post-seismic slow slip on the plate boundary off Sanriku, NE Japan associated with three interplate earthquakes as estimated from small repeating earthquake data

    Naoki Uchida;Akira Hasegawa;Toru Matsuzawa;Toshihiro Igarashi

Frequent Co-Authors

Naoki Uchida
Naoki Uchida Tohoku University
Akira Hasegawa
Akira Hasegawa Tohoku University
Tomomi Okada
Tomomi Okada Tohoku University
Junichi Nakajima
Junichi Nakajima Tokyo Institute of Technology
Norihito Umino
Norihito Umino Tohoku University
Ryota Hino
Ryota Hino Tohoku University
Yoshiyuki Kaneda
Yoshiyuki Kaneda Nagoya University
Dapeng Zhao
Dapeng Zhao Tohoku University
Kazushige Obara
Kazushige Obara University of Tokyo
Naoshi Hirata
Naoshi Hirata University of Tokyo

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