Masayuki Obayashi

4.8k total citations · 3 hit papers
72 papers, 3.8k citations indexed

About

Masayuki Obayashi is a scholar working on Geophysics, Artificial Intelligence and Geology. According to data from OpenAlex, Masayuki Obayashi has authored 72 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Geophysics, 6 papers in Artificial Intelligence and 5 papers in Geology. Recurrent topics in Masayuki Obayashi's work include earthquake and tectonic studies (51 papers), High-pressure geophysics and materials (50 papers) and Geological and Geochemical Analysis (32 papers). Masayuki Obayashi is often cited by papers focused on earthquake and tectonic studies (51 papers), High-pressure geophysics and materials (50 papers) and Geological and Geochemical Analysis (32 papers). Masayuki Obayashi collaborates with scholars based in Japan, United States and China. Masayuki Obayashi's co-authors include Yoshio Fukao, Sri Widiyantoro, Hiroshi Inoue, Fenglin Niu, Satoru Tanaka, Tomoeki Nakakuki, Hitoshi Kawakatsu, Junko Yoshimitsu, Hiroko Sugioka and Jieyuan Ning and has published in prestigious journals such as Science, Journal of Geophysical Research Atmospheres and Scientific Reports.

In The Last Decade

Masayuki Obayashi

66 papers receiving 3.6k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Subducting slabs stagnant in the mantle transition zone

1992 537 citations Yoshio Fukao, Masayuki Obayashi et al. profile →
Stagnant slabs in the upper and lower mantle transition region

2001 529 citations Yoshio Fukao, Masayuki Obayashi et al. profile →
Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity

2013 441 citations Yoshio Fukao, Masayuki Obayashi Journal of Geophysical Research Solid Earth profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Masayuki Obayashi Japan	26	3.7k	189	172	100	60	72	3.8k
E. Debayle France	33	3.2k 0.9×	132 0.7×	110 0.6×	38 0.4×	28 0.5×	64	3.3k
M. J. Fouch United States	31	3.1k 0.8×	226 1.2×	84 0.5×	26 0.3×	38 0.6×	68	3.2k
R. N. Pysklywec Canada	28	2.2k 0.6×	175 0.9×	181 1.1×	32 0.3×	30 0.5×	81	2.4k
Natsue Abe Japan	19	1.5k 0.4×	172 0.9×	77 0.4×	38 0.4×	86 1.4×	77	1.7k
K. M. Fischer United States	45	5.9k 1.6×	221 1.2×	127 0.7×	31 0.3×	23 0.4×	146	6.0k
Adolphe Nicolas France	27	2.8k 0.8×	274 1.4×	79 0.5×	52 0.5×	99 1.6×	56	3.0k
Wenjin Zhao China	19	2.7k 0.7×	234 1.2×	139 0.8×	47 0.5×	102 1.7×	30	2.9k
J. A. Conder United States	22	1.2k 0.3×	75 0.4×	81 0.5×	135 1.4×	40 0.7×	55	1.4k
Hiroko Sugioka Japan	25	2.0k 0.5×	219 1.2×	90 0.5×	61 0.6×	13 0.2×	128	2.1k
Manuele Faccenda Italy	26	2.6k 0.7×	106 0.6×	84 0.5×	19 0.2×	34 0.6×	69	2.6k

Countries citing papers authored by Masayuki Obayashi

Since Specialization

Citations

This map shows the geographic impact of Masayuki Obayashi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masayuki Obayashi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masayuki Obayashi more than expected).

Fields of papers citing papers by Masayuki Obayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masayuki Obayashi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masayuki Obayashi. The network helps show where Masayuki Obayashi may publish in the future.

Co-authorship network of co-authors of Masayuki Obayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Masayuki Obayashi. A scholar is included among the top collaborators of Masayuki Obayashi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Masayuki Obayashi. Masayuki Obayashi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Obana, Koichiro, Aki Ito, Toshiya Fujiwara, et al.. (2025). Earthquake activity in the Torishima Rift and Sofu Seamount, and its relationship to the October 2023 tsunamis in Japan. Earth Planets and Space. 77(1).

Yamamoto, Yojiro, Aki Ito, Yasushi Ishihara, et al.. (2025). Magmatic system of the Kikai submarine caldera, SW Japan, imaged by passive seismic tomography. Journal of Volcanology and Geothermal Research. 465. 108369–108369.

Obayashi, Masayuki, Hiroko Sugioka, Hajime Shiobara, et al.. (2024). Seismic Image of the Central to Southern Andean Subduction Zone Through Finite‐Frequency Tomography. Journal of Geophysical Research Solid Earth. 129(11). 2 indexed citations

Fujiwara, Toshiya, Kentaro Imai, Masayuki Obayashi, et al.. (2024). The Sofu Seamount Submarine Volcano Present in the Source Area of the October 2023 Earthquakes and Tsunamis in Japan. Geophysical Research Letters. 51(19). 7 indexed citations

Wang, Zhi, et al.. (2023). Global P‐Wave and Joint S‐Wave Tomography in the North Pacific: Implications for Slab Geometry and Evolution. Journal of Geophysical Research Solid Earth. 128(11). 3 indexed citations

Hachisu, Mitsugu, et al.. (2020). Psychosomatic Health in Elderly People for Preventing Frailty: The role of IGF-1 and BDNF in the Muscle and the Brain. 8(1). 1–8. 1 indexed citations

Obayashi, Masayuki, Junko Yoshimitsu, Hiroko Sugioka, et al.. (2016). Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data. Geophysical Research Letters. 43(22). 11 indexed citations

Tsuboi, Seiji, et al.. (2014). Application of Adjoint Method and Spectral-Element Method to Tomographic Inversion of Regional Seismological Structure Beneath Japanese Islands. 2014 AGU Fall Meeting. 2014. 1 indexed citations

Fukao, Yoshio, Masayuki Obayashi, & Junko Yoshimitsu. (2014). Mechanisms of ultra-deep earthquakes (h>660km) in a slab penetrating the 660-km discontinuity. Japan Geoscience Union. 1 indexed citations

10.

Tajima, Fumiko, Yoshio Fukao, Masayuki Obayashi, & T. Sakurai. (2014). Evaluation of slab images in the northwestern Pacific. Earth Planets and Space. 50(11-12). 953–964. 2 indexed citations

11.

Tsuboi, Seiji, et al.. (2013). Source mechanism of May 24, 2013 Sea of Okhotsk deep earthquake (Mw8.3) estimated by broadband waveform modeling. AGUFM. 2013. 1 indexed citations

12.

Fukao, Yoshio & Masayuki Obayashi. (2013). Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity. Journal of Geophysical Research Solid Earth. 118(11). 5920–5938. 441 indexed citations breakdown →

13.

Grand, S. P., Fenglin Niu, Hitoshi Kawakatsu, et al.. (2012). Seismic evidence for possible lithospheric drips beneath the Greater Xiang'an Range by NECESSArray. AGU Fall Meeting Abstracts. 2012. 1 indexed citations

14.

Obayashi, Masayuki, Hitoshi Kawakatsu, Satoru Tanaka, et al.. (2011). P-wave tomography of Northeastern China observed with NECESSArray. AGU Fall Meeting Abstracts. 2011. 3 indexed citations

15.

Yoshimitsu, Junko, Masayuki Obayashi, & Yoshio Fukao. (2009). Development of the global seismic travel time database at JAMSTEC/IFREE. 2009. 163–172.

16.

Fukao, Yoshio, et al.. (2009). Stagnant Slab: A Review. Annual Review of Earth and Planetary Sciences. 37(1). 19–46. 306 indexed citations

17.

Utada, Hisashi, Takao Koyama, Masayuki Obayashi, & Yoshio Fukao. (2009). A joint interpretation of electromagnetic and seismic tomography models suggests the mantle transition zone below Europe is dry. Earth and Planetary Science Letters. 281(3-4). 249–257. 58 indexed citations

18.

Tanaka, Satoru, Masayuki Obayashi, Daisuke Suetsugu, et al.. (2008). P-wave tomography of the mantle beneath the South Pacific Superswell revealed by joint ocean floor and islands broadband seismic experiments. Physics of The Earth and Planetary Interiors. 172(3-4). 268–277. 17 indexed citations

19.

Utada, Hisashi, et al.. (2005). Electrical Conductivity In The Transition Zone Beneath The North Pacific And Its Implication For The Presence Of Water. AGUFM. 2005. 3 indexed citations

20.

Obayashi, Masayuki, T. Sakurai, & Yoshio Fukao. (1995). The 3D Structure of the Mantle from Travel Time Inversion.. Journal of Geography (Chigaku Zasshi). 104(7). 934–940. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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