World's Best Scientists 2026 revealed!
Yuichi Otsuka

Yuichi Otsuka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 70 1008 888 15 14 504 15031

Yuichi Otsuka publications per year

The chart shows the history of publications by Yuichi Otsuka between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Yuichi Otsuka published across 31 years, from 1995 to 2025, averaging 19.1 papers a year. Output peaked at 46 publications in 2014. 23 of the 593 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 46. Peak 46 publications in 2014. 1995: 1 publication 1996: 0 publications 1997: 2 publications 1998: 4 publications 1999: 1 publication 2000: 7 publications 2001: 7 publications 2002: 11 publications 2003: 8 publications 2004: 11 publications 2005: 9 publications 2006: 15 publications 2007: 17 publications 2008: 15 publications 2009: 32 publications 2010: 29 publications 2011: 42 publications 2012: 32 publications 2013: 21 publications 2014: 46 publications 2015: 37 publications 2016: 38 publications 2017: 39 publications 2018: 44 publications 2019: 30 publications 2020: 20 publications 2021: 35 publications 2022: 7 publications 2023: 10 publications 2024: 10 publications 2025: 13 publications
1995 2025

593 publications in total across all disciplines

View publications per year as a table
Yuichi Otsuka: publications per year, 1995 to 2025
Year Publications
1995 1
1996 0
1997 2
1998 4
1999 1
2000 7
2001 7
2002 11
2003 8
2004 11
2005 9
2006 15
2007 17
2008 15
2009 32
2010 29
2011 42
2012 32
2013 21
2014 46
2015 37
2016 38
2017 39
2018 44
2019 30
2020 20
2021 35
2022 7
2023 10
2024 10
2025 13
Total 593
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Yuichi Otsuka 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 Yuichi Otsuka 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, 498–507 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: 504 publications — 98th percentile

98% 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
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 18 504
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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Yuichi Otsuka 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 Yuichi Otsuka 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, 70 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: 70 D-Index — 90th percentile

90% 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
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75 70
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

Yuichi Otsuka is affiliated with Nagoya University in Japan and has an extensive research portfolio primarily in the field of Engineering. Their work focuses on multiple subfields including Mechanical Engineering, Surgery, Mechanics of Materials, Biomedical Engineering, and Astronomy and Astrophysics.

Their publications address a range of specialized topics such as Orthopaedic implants and arthroplasty, Bone Tissue Engineering Materials, Metal and Thin Film Mechanics, Dental materials and restorations, Powder Metallurgy Techniques and Materials, Fatigue and fracture mechanics, and Additive Manufacturing and 3D Printing Technologies.

Otsuka has contributed to several papers spanning recent years. Examples include:

  • Fatigue crack deflection and branching behavior of low carbon steel under mechanically large grain condition, 2021, International Journal of Fatigue
  • Proposal of a Validation Method of Failure Mode Analyses based on the Stress-Strength Model with a Support Vector Machine, 2020, Reliability Engineering & System Safety
  • Effects of composition of hydroxyapatite/gray titania coating fabricated by suspension plasma spraying on mechanical and antibacterial properties, 2021, Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials
  • Effect of coating thickness on fatigue behavior of TiAlN coated Ti-alloys, 2020, International Journal of Fatigue
  • Delamination-fretting wear failure evaluation at HAp-Ti-6Al-4V interface of uncemented artificial hip implant, 2021, Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials

The scientist frequently collaborates with several co-authors, with whom they have published multiple works. These include Yukio Miyashita, Yoshiharu Mutoh, Thanh-Tung Duong, and Nguyễn Quang Minh.

Prominent venues for Yuichi Otsuka's research publications include:

  • The Proceedings of Mechanical Engineering Congress Japan
  • The Proceedings of Conference of Hokuriku-Shinetsu Branch
  • Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials
  • Keisan Rikigaku Koenkai koen ronbunshu/Keisan Rikigaku Kouenkai kouen rombunshuu
  • The Proceedings of the Materials and Mechanics Conference

Best Publications

  • A new technique for mapping of total electron content using GPS network in Japan

    Y. Otsuka;T. Ogawa;A. Saito;A. Saito;T. Tsugawa

  • Ionospheric disturbances detected by GPS total electron content observation after the 2011 off the Pacific coast of Tohoku Earthquake

    T. Tsugawa;A. Saito;Y. Otsuka;M. Nishioka

  • Statistical study of nighttime medium‐scale traveling ionospheric disturbances using midlatitude airglow images

    K. Shiokawa;C. Ihara;C. Ihara;Y. Otsuka;T. Ogawa

  • Geomagnetic conjugate observations of medium-scale traveling ionospheric disturbances at midlatitude using all-sky airglow imagers

    Y. Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson

  • Medium‐scale traveling ionospheric disturbances detected with dense and wide TEC maps over North America

    T. Tsugawa;Y. Otsuka;A. J. Coster;A. Saito

  • A physical mechanism of positive ionospheric storms at low latitudes and midlatitudes

    N. Balan;N. Balan;K. Shiokawa;Y. Otsuka;T. Kikuchi

  • GPS observations of medium-scale traveling ionospheric disturbances over Europe

    Y. Otsuka;K. Suzuki;S. Nakagawa;M. Nishioka;M. Nishioka

  • Global imaging of polar cap patches with dual airglow imagers

    K. Hosokawa;S. Taguchi;K. Shiokawa;Y. Otsuka

  • Statistical study of medium-scale traveling ionospheric disturbances observed with the GPS networks in Southern California

    Nobuki Kotake;Yuichi Otsuka;Tadahiko Ogawa;Takuya Tsugawa

  • A statistical study of large-scale traveling ionospheric disturbances using the GPS network in Japan

    T. Tsugawa;T. Tsugawa;A. Saito;Y. Otsuka

  • Three‐dimensional simulation of the coupled Perkins and Es‐layer instabilities in the nighttime midlatitude ionosphere

    Tatsuhiro Yokoyama;David L. Hysell;Yuichi Otsuka;Mamoru Yamamoto

  • Ground and satellite observations of nighttime medium‐scale traveling ionospheric disturbance at midlatitude

    K. Shiokawa;Y. Otsuka;C. Ihara;C. Ihara;T. Ogawa

  • Geomagnetic conjugate observations of equatorial airglow depletions

    Y. Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson

  • Detection of ruptures of Andaman fault segments in the 2004 great Sumatra earthquake with coseismic ionospheric disturbances

    Kosuke Heki;Yuichi Otsuka;Nithiwatthn Choosakul;Narong Hemmakorn

  • Climatological study of GPS total electron content variations caused by medium‐scale traveling ionospheric disturbances

    N. Kotake;Y. Otsuka;T. Tsugawa;T. Ogawa

  • Super plasma fountain and equatorial ionization anomaly during penetration electric field

    N. Balan;N. Balan;K. Shiokawa;Y. Otsuka;S. Watanabe

  • Vertical connection from the tropospheric activities to the ionospheric longitudinal structure simulated by a new Earth's whole atmosphere-ionosphere coupled model

    H. Jin;Yasunobu Miyoshi;H. Fujiwara;H. Shinagawa

  • A climatology of F region gravity wave propagation over the middle and upper atmosphere radar

    W. L. Oliver;Y. Otsuka;M. Sato;T. Takami

  • Propagation characteristics of nighttime mesospheric and thermospheric waves observed by optical mesosphere thermosphere imagers at middle and low latitudes

    K. Shiokawa;Y. Otsuka;T. Ogawa

  • Simultaneous observations of nighttime medium-scale traveling ionospheric disturbances and E region field-aligned irregularities at midlatitude

    Y. Otsuka;F. Onoma;K. Shiokawa;T. Ogawa

  • Ground and satellite observations of nighttime medium-scale traveling ionospheric disturbance at midlatitude

    Y. Otsuka;K. Shiokawa;C. Ihara;T. Ogawa

Frequent Co-Authors

Kazuo Shiokawa
Kazuo Shiokawa Nagoya University
Tadahiko Ogawa
Tadahiko Ogawa National Institute of Information and Communications Technology
Mamoru Yamamoto
Mamoru Yamamoto Kyoto University
Akinori Saito
Akinori Saito Kyoto University
Takuji Nakamura
Takuji Nakamura National Institute of Polar Research
Shoichiro Fukao
Shoichiro Fukao Kyoto University
Yoshizumi Miyoshi
Yoshizumi Miyoshi Nagoya University
Yukio Miyashita
Yukio Miyashita Nagaoka University of Technology
N. Balan
N. Balan National Central University
Ryuho Kataoka
Ryuho Kataoka National Institute of Polar Research

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