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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 43 5105 4718 26 25 192 5271

H. Takahashi publications per year

The chart shows the history of publications by H. Takahashi between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. H. Takahashi published across 53 years, from 1973 to 2025, averaging 5.2 papers a year. Output peaked at 15 publications in 2005. 17 of the 277 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2005. 1973: 1 publication 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 2 publications 1978: 3 publications 1979: 2 publications 1980: 2 publications 1981: 3 publications 1982: 0 publications 1983: 3 publications 1984: 4 publications 1985: 3 publications 1986: 2 publications 1987: 2 publications 1988: 3 publications 1989: 3 publications 1990: 5 publications 1991: 3 publications 1992: 9 publications 1993: 2 publications 1994: 5 publications 1995: 8 publications 1996: 4 publications 1997: 10 publications 1998: 3 publications 1999: 9 publications 2000: 3 publications 2001: 13 publications 2002: 8 publications 2003: 9 publications 2004: 12 publications 2005: 15 publications 2006: 6 publications 2007: 12 publications 2008: 4 publications 2009: 14 publications 2010: 5 publications 2011: 7 publications 2012: 4 publications 2013: 4 publications 2014: 7 publications 2015: 6 publications 2016: 4 publications 2017: 2 publications 2018: 4 publications 2019: 1 publication 2020: 5 publications 2021: 3 publications 2022: 9 publications 2023: 11 publications 2024: 9 publications 2025: 8 publications
1973 2025

277 publications in total across all disciplines

View publications per year as a table
H. Takahashi: publications per year, 1973 to 2025
Year Publications
1973 1
1974 1
1975 0
1976 0
1977 2
1978 3
1979 2
1980 2
1981 3
1982 0
1983 3
1984 4
1985 3
1986 2
1987 2
1988 3
1989 3
1990 5
1991 3
1992 9
1993 2
1994 5
1995 8
1996 4
1997 10
1998 3
1999 9
2000 3
2001 13
2002 8
2003 9
2004 12
2005 15
2006 6
2007 12
2008 4
2009 14
2010 5
2011 7
2012 4
2013 4
2014 7
2015 6
2016 4
2017 2
2018 4
2019 1
2020 5
2021 3
2022 9
2023 11
2024 9
2025 8
Total 277
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H. Takahashi 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 H. Takahashi 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, 188–197 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: 192 publications — 60th percentile

60% 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
188–197 401 192
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
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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H. Takahashi 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 H. Takahashi 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, 43 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: 43 D-Index — 47th percentile

47% 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 43
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
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

H. Takahashi is affiliated with the National Institute for Space Research in Brazil and has contributed extensively to the fields of Physics and Astronomy as well as Earth and Planetary Sciences. Their research primarily focuses on Astronomy and Astrophysics, with additional involvement in Geophysics, Aerospace Engineering, Atmospheric Science, and Oceanography.

The scientist's work concentrates on topics related to Ionosphere and Magnetosphere Dynamics, Solar and Space Plasma Dynamics, Earthquake Detection and Analysis, GNSS Positioning and Interference, Atmospheric Ozone and Climate, Geophysics and Gravity Measurements, and Astro and Planetary Science.

Frequent publication venues for H. Takahashi include:

  • Journal of Geophysical Research Space Physics
  • Earth Planets and Space
  • Space Weather
  • Annales Geophysicae
  • Earth and Planetary Physics

Their frequent collaborators consist of:

  • C. M. Wrasse
  • Diego Barros
  • C. A. O. B. Figueiredo
  • Igo Paulino
  • Patrick Essien

Among recent publications authored or coauthored by H. Takahashi are:

  • "Ionospheric Response to the Extreme 2024 Mother's Day Geomagnetic Storm Over the Latin American Sector," 2024, Space Weather
  • "Atmospheric Gravity Waves Observed in the Nightglow Following the 21 August 2017 Total Solar Eclipse," 2020, Geophysical Research Letters
  • "Equatorial Plasma Bubble Occurrence Under Propagation of MSTID and MLT Gravity Waves," 2020, Journal of Geophysical Research Space Physics
  • "Equatorial Plasma Bubbles and Medium-Scale Traveling Ionospheric Disturbance Interaction Observed by OI 630 nm airglow imaging at Bom Jesus de Lapa, Brazil," 2021, Earth and Planetary Physics
  • "Multi-instrument study of longitudinal wave structures for plasma bubble seeding in the equatorial ionosphere," 2021, Earth and Planetary Physics

Best Publications

  • Magnetospheric disturbance induced equatorial plasma bubble development and dynamics: A case study in Brazilian sector

    M. A. Abdu;I. S. Batista;H. Takahashi;J. MacDougall

  • Image measurements of short‐period gravity waves at equatorial latitudes

    Michael J. Taylor;W. R. Pendleton Jr.;S. Clark;H. Takahashi

  • Ionospheric plasma bubble climatology over Brazil based on 22 years (1977–1998) of airglow observations

    J. H.A. Sobral;M. A. Abdu;H. Takahashi;Michael J. Taylor

  • An investigation of gravity wave activity in the low-latitude upper mesosphere: Propagation direction and wind filtering

    A. F. Medeiros;Michael J. Taylor;H. Takahashi;P. P. Batista

  • OI 630 nm imaging observations of equatorial plasma depletions at 16° S dip latitude

    Y. Sahai;Y. Sahai;J. Aarons;M. Mendillo;J. Baumgardner

  • Convection: the likely source of the medium-scale gravity waves observed in the OH airglow layer near Brasilia, Brazil, during the SpreadFEx campaign

    S. L. Vadas;M. J. Taylor;P.-D. Pautet;P. A. Stamus

  • Predominant semi-annual oscillation of the upper mesospheric airglow intensities and temperatures in the equatorial region

    H. Takahashi;B.R. Clemesha;P.P. Batista

  • Planetary wave signatures in the equatorial atmosphere ionosphere system, and mesosphere- E- and F-region coupling

    M.A. Abdu;T.K. Ramkumar;I.S. Batista;C.G.M. Brum

  • Spaced lidar and nightglow observations of an atmospheric sodium enhancement

    B.R. Clemesha;V.W.J.H. Kirchhoff;D.M. Simonich;H. Takahashi

  • Characteristics of mesospheric gravity waves near the magnetic equator, Brazil, during the SpreadFEx campaign

    Michael J. Taylor;Pierre-Dominique Pautet;A. F. Medeiros;R. Buriti

  • Simultaneous measurements of OH(9,4), (8,3), (7,2), (6,2) and (5,1) bands in the airglow

    H. Takahashi;P. P. Batista

  • Spread F occurrence over a southern anomaly crest location in Brazil during June solstice of solar minimum activity

    C. M. N. Candido;I. S. Batista;F. Becker-Guedes;M. A. Abdu

  • Climatology of the nighttime equatorial thermospheric winds and temperatures over Brazil near solar minimum

    J. W. Meriwether;J. J. Makela;Y. Huang;D. J. Fisher

  • Ionospheric TEC Weather Map Over South America

    H. Takahashi;C. M. Wrasse;C. M. Denardini;M. B. Pádua

  • Planetary wave coupling (5-6-day waves) in the low-latitude atmosphere-ionosphere system

    D.V. Pancheva;P.J. Mukhtarov;N.J. Mitchell;D.C. Fritts

  • Ionospheric plasma bubble zonal drifts over the tropical region: a study using OI emission all-sky images

    A.A. Pimenta;J.A. Bittencourt;P.R. Fagundes;Y. Sahai

  • Signatures of ultra fast Kelvin waves in the equatorial middle atmosphere and ionosphere

    H. Takahashi;C. M. Wrasse;J. Fechine;D. Pancheva

  • Ionospheric plasma bubble zonal drift: a methodology using OI 630 nm all-sky imaging systems

    A. A. Pimenta;A. A. Pimenta;P. R. Fagundes;J. A. Bittencourt;Y. Sahai

  • Plasma Blobs Observed by Ground-based Optical and Radio Techniques in the Brazilian Tropical Sector

    A. A. Pimenta;Y. Sahai;J. A. Bittencourt;M. A. Abdu

  • The climatology of ionospheric plasma bubbles and irregularities over Brazil

    F. D. Chu;F. D. Chu;J. Y. Liu;H. Takahashi;J. H. A. Sobral

  • Signatures of 3-6 day planetary waves in the equatorial mesosphere and ionosphere

    H. Takahashi;C. M. Wrasse;D. Pancheva;M. A. Abdu

  • Tidal and solar cycle effects on the OI 5577 Å, NaD and OH(8,3) airglow emissions observed at 23°S

    H. Takahashi;Y. Sahai;P.P. Batista

Frequent Co-Authors

Paulo Prado Batista
Paulo Prado Batista National Institute for Space Research
Barclay Clemesha
Barclay Clemesha National Institute for Space Research
J. H. A. Sobral
J. H. A. Sobral National Institute for Space Research
M.A. Abdu
M.A. Abdu National Institute for Space Research
Michael J. Taylor
Michael J. Taylor Utah State University
Paulo Roberto Fagundes
Paulo Roberto Fagundes Universidade do Vale do Paraíba
E. R. de Paula
E. R. de Paula National Institute for Space Research
Kazuo Shiokawa
Kazuo Shiokawa Nagoya University
Inez S. Batista
Inez S. Batista National Institute for Space Research
Sharon L. Vadas
Sharon L. Vadas Northwest Research Associates

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