World's Best Scientists 2026 revealed!
Kazushige Obara

Kazushige Obara

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 60 1871 1686 41 36 314 15299

Kazushige Obara publications per year

The chart shows the history of publications by Kazushige Obara between 1985 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kazushige Obara published across 41 years, from 1985 to 2025, averaging 8.2 papers a year. Output peaked at 28 publications in 2014. 4 of the 338 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1985 to 2025. Vertical axis: number of publications, 0 to 28. Peak 28 publications in 2014. 1985: 1 publication 1986: 1 publication 1987: 0 publications 1988: 1 publication 1989: 1 publication 1990: 0 publications 1991: 1 publication 1992: 1 publication 1993: 1 publication 1994: 1 publication 1995: 2 publications 1996: 0 publications 1997: 3 publications 1998: 2 publications 1999: 1 publication 2000: 0 publications 2001: 1 publication 2002: 4 publications 2003: 5 publications 2004: 8 publications 2005: 15 publications 2006: 12 publications 2007: 15 publications 2008: 10 publications 2009: 14 publications 2010: 17 publications 2011: 14 publications 2012: 14 publications 2013: 14 publications 2014: 28 publications 2015: 27 publications 2016: 19 publications 2017: 17 publications 2018: 19 publications 2019: 12 publications 2020: 23 publications 2021: 12 publications 2022: 10 publications 2023: 8 publications 2024: 3 publications 2025: 1 publication
1985 2025

338 publications in total across all disciplines

View publications per year as a table
Kazushige Obara: publications per year, 1985 to 2025
Year Publications
1985 1
1986 1
1987 0
1988 1
1989 1
1990 0
1991 1
1992 1
1993 1
1994 1
1995 2
1996 0
1997 3
1998 2
1999 1
2000 0
2001 1
2002 4
2003 5
2004 8
2005 15
2006 12
2007 15
2008 10
2009 14
2010 17
2011 14
2012 14
2013 14
2014 28
2015 27
2016 19
2017 17
2018 19
2019 12
2020 23
2021 12
2022 10
2023 8
2024 3
2025 1
Total 338
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Kazushige Obara 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 Kazushige Obara 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, 308–317 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: 314 publications — 88th percentile

88% 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
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107 314
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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Kazushige Obara 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 Kazushige Obara 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, 60 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: 60 D-Index — 80th percentile

80% 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
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 60
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

Kazushige Obara is affiliated with the University of Tokyo in Japan and has contributed extensively to the fields of Earth and Planetary Sciences and Computer Science. Their work intersects geophysics and artificial intelligence, with a particular focus on earthquake and tectonic studies.

Their research spans multiple specialized areas, including:

  • Earthquake and tectonic studies
  • Seismology and earthquake studies
  • Earthquake detection and analysis
  • High-pressure geophysics and materials
  • Geological and geochemical analysis
  • Seismic waves and analysis
  • Bayesian methods and mixture models

Kazushige Obara's notable recent publications include:

  • "Slow Earthquakes Illuminating Interplate Coupling Heterogeneities in Subduction Zones," 2020, Geophysical Research Letters
  • "Spatiotemporal Variations of Shallow Very Low Frequency Earthquake Activity Southeast Off the Kii Peninsula, Along the Nankai Trough, Japan," 2022, Journal of Geophysical Research Solid Earth
  • "Characteristic Activities of Slow Earthquakes in Japan," 2020, Proceedings of the Japan Academy Series B
  • "Spatiotemporal Characteristics of Relocated Deep Low-Frequency Earthquakes Beneath 52 Volcanic Regions in Japan Over an Analysis Period of 14 Years and 9 Months," 2021, Journal of Geophysical Research Solid Earth
  • "Shallow Slow Earthquake Episodes Near the Trench Axis off Costa Rica," 2021, Journal of Geophysical Research Solid Earth

The venues where Kazushige Obara most frequently publishes include:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Journal of Geophysical Research Solid Earth
  • Geophysical Research Letters
  • Science Advances
  • Proceedings of the Japan Academy Series B

Frequent collaborators in their research are:

  • Shunsuke Takemura
  • Satoru Baba
  • Akiko Takeo
  • Akemi Noda
  • Ryo Kurihara

Kazushige Obara's research is primarily grounded in geophysical phenomena with strong emphasis on earthquake detection, slow earthquakes characterization, and spatiotemporal seismic activity. Their interdisciplinary approach often integrates computational methods, including artificial intelligence techniques, to analyze seismic signals and complex earth processes.

Best Publications

  • Nonvolcanic Deep Tremor Associated with Subduction in Southwest Japan

    Unknown

  • Recent progress of seismic observation networks in Japan —Hi-net, F-net, K-NET and KiK-net—

    Yoshimitsu Okada;Keiji Kasahara;Sadaki Hori;Kazushige Obara

  • Propagation of slow slip leading up to the 2011 M(w) 9.0 Tohoku-Oki earthquake.

    Aitaro Kato;Kazushige Obara;Toshihiro Igarashi;Hiroshi Tsuruoka

  • Connecting slow earthquakes to huge earthquakes

    Kazushige Obara;Aitaro Kato

  • Episodic slow slip events accompanied by non‐volcanic tremors in southwest Japan subduction zone

    Kazushige Obara;Hitoshi Hirose;Fumio Yamamizu;Keiji Kasahara

  • Slow earthquakes coincident with episodic tremors and slow slip events.

    Yoshihiro Ito;Kazushige Obara;Katsuhiko Shiomi;Shutaro Sekine

  • A densely distributed high-sensitivity seismograph network in Japan: HI-net by National Research Institute for Earth Science and Disaster Prevention

    Kazushige Obara;Keiji Kasahara;Sadaki Hori;Yoshimitsu Okada

  • Separation of scattering and intrinsic attenuation for the Kanto-Tokai region, Japan, using measurements of S-wave energy versus hypocentral distance

    Michael Fehler;Mitsuyuki Hoshiba;Haruo Sato;Kazushige Obara

  • Repeating short- and long-term slow slip events with deep tremor activity around the Bungo channel region, southwest Japan

    Unknown

  • Decade‐scale decrease inb value prior to the M9‐class 2011 Tohoku and 2004 Sumatra quakes

    K. Z. Nanjo;N. Hirata;K. Obara;K. Kasahara

  • Three-dimensional P- and S-wave velocity structures beneath the Japan Islands obtained by high-density seismic stations by seismic tomography

    Makoto Matsubara;Kazushige Obara;Keiji Kasahara

  • Very low frequency earthquakes within accretionary prisms are very low stress‐drop earthquakes

    Yoshihiro Ito;Kazushige Obara

  • Phenomenology of deep slow earthquake family in southwest Japan: Spatiotemporal characteristics and segmentation

    Kazushige Obara

  • Non-volcanic deep low-frequency tremors accompanying slow slips in the southwest Japan subduction zone

    Unknown

  • Very low frequency earthquakes excited by the 2004 off the Kii peninsula earthquakes : A dynamic deformation process in the large accretionary prism

    Kazushige Obara;Yoshihiro Ito

  • A normal-faulting seismic sequence triggered by the 2011 off the Pacific coast of Tohoku Earthquake: Wholesale stress regime changes in the upper plate

    Aitaro Kato;Shin’ichi Sakai;Kazushige Obara

  • Dynamic deformation of the accretionary prism excites very low frequency earthquakes

    Yoshihiro Ito;Kazushige Obara

  • Spatiotemporal distribution of seismic energy radiation from low-frequency tremor in western Shikoku, Japan

    Takuto Maeda;Kazushige Obara

  • Three-dimensional crustal S wave velocity structure in Japan using microseismic data recorded by Hi-net tiltmeters

    K. Nishida;H. Kawakatsu;K. Obara

  • Detection of short-term slow slip events along the Nankai Trough, southwest Japan, using GNSS data

    Takuya Nishimura;Takuya Nishimura;Takanori Matsuzawa;Kazushige Obara

  • Migrating tremor off southern Kyushu as evidence for slow slip of a shallow subduction interface

    Y. Yamashita;H. Yakiwara;Y. Asano;Hiroshi Shimizu

  • Depth‐dependent activity of non‐volcanic tremor in southwest Japan

    Kazushige Obara;Sachiko Tanaka;Takuto Maeda;Takanori Matsuzawa

  • Successive estimation of a tsunami wavefield without earthquake source data: A data assimilation approach toward real-time tsunami forecasting

    Takuto Maeda;Kazushige Obara;Masanao Shinohara;Toshihiko Kanazawa

  • Modeling short- and long-term slow slip events in the seismic cycles of large subduction earthquakes

    Takanori Matsuzawa;Hitoshi Hirose;Bunichiro Shibazaki;Kazushige Obara

  • Background Love and Rayleigh waves simultaneously generated at the Pacific Ocean floors

    Kiwamu Nishida;Hitoshi Kawakatsu;Yoshio Fukao;Kazushige Obara

  • Characteristics and interactions between non-volcanic tremor and related slow earthquakes in the Nankai subduction zone, southwest Japan

    Kazushige Obara

Frequent Co-Authors

Takuto Maeda
Takuto Maeda Hirosaki University
Aitaro Kato
Aitaro Kato University of Tokyo
Naoshi Hirata
Naoshi Hirata University of Tokyo
Haruo Sato
Haruo Sato Tohoku University
Toru Matsuzawa
Toru Matsuzawa Tohoku University
Kiwamu Nishida
Kiwamu Nishida University of Tokyo
Takaya Iwasaki
Takaya Iwasaki University of Tokyo
Tomomi Okada
Tomomi Okada Tohoku University
Bogdan Enescu
Bogdan Enescu Kyoto University
Norihito Umino
Norihito Umino Tohoku University

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