Eitarou Oka

2.7k total citations
64 papers, 1.7k citations indexed

About

Eitarou Oka is a scholar working on Oceanography, Global and Planetary Change and Atmospheric Science. According to data from OpenAlex, Eitarou Oka has authored 64 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 56 papers in Oceanography, 39 papers in Global and Planetary Change and 34 papers in Atmospheric Science. Recurrent topics in Eitarou Oka's work include Oceanographic and Atmospheric Processes (49 papers), Climate variability and models (29 papers) and Marine and coastal ecosystems (23 papers). Eitarou Oka is often cited by papers focused on Oceanographic and Atmospheric Processes (49 papers), Climate variability and models (29 papers) and Marine and coastal ecosystems (23 papers). Eitarou Oka collaborates with scholars based in Japan, United States and Argentina. Eitarou Oka's co-authors include Toshio Suga, Bo Qiu, Shinya Kouketsu, Masaki Kawabe, Michio Aoyama, Lynne D. Talley, Niklas Schneider, Yasunori Hamajima, Katsuya Toyama and Toshiya Nakano and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Journal of Climate and Geophysical Research Letters.

In The Last Decade

Eitarou Oka

61 papers receiving 1.7k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Eitarou Oka Japan 25 1.3k 1.2k 811 168 132 64 1.7k
Kazuhiro Misumi Japan 16 605 0.5× 508 0.4× 303 0.4× 157 0.9× 107 0.8× 33 1.1k
Shinya Kouketsu Japan 19 937 0.7× 727 0.6× 514 0.6× 115 0.7× 54 0.4× 55 1.2k
Tomoharu Senjyu Japan 20 914 0.7× 406 0.3× 567 0.7× 265 1.6× 19 0.1× 62 1.3k
K.M. Ellis Canada 15 386 0.3× 481 0.4× 446 0.5× 165 1.0× 70 0.5× 24 1.0k
Koh Harada Japan 17 715 0.6× 374 0.3× 320 0.4× 257 1.5× 68 0.5× 42 1.2k
Francis Auclair France 20 939 0.7× 455 0.4× 502 0.6× 150 0.9× 33 0.3× 41 1.2k
S. M. Pike United States 17 713 0.6× 315 0.3× 138 0.2× 248 1.5× 125 0.9× 21 1.0k
Laurent Coppola France 24 1.2k 1.0× 467 0.4× 370 0.5× 290 1.7× 23 0.2× 51 1.5k
Sergey M. Varlamov Japan 14 422 0.3× 316 0.3× 276 0.3× 63 0.4× 31 0.2× 31 654
Ching‐Ling Wei Taiwan 18 822 0.6× 293 0.2× 207 0.3× 219 1.3× 38 0.3× 40 1.1k

Countries citing papers authored by Eitarou Oka

Since Specialization
Citations

This map shows the geographic impact of Eitarou Oka'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 Eitarou Oka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Eitarou Oka more than expected).

Fields of papers citing papers by Eitarou Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Eitarou Oka. 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 Eitarou Oka. The network helps show where Eitarou Oka may publish in the future.

Co-authorship network of co-authors of Eitarou Oka

This figure shows the co-authorship network connecting the top 25 collaborators of Eitarou Oka. A scholar is included among the top collaborators of Eitarou Oka 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 Eitarou Oka. Eitarou Oka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sukigara, Chiho, Ryuichiro Inoue, Kanako Sato, et al.. (2025). Biophysical Interactions Stimulate the Spring Phytoplankton Bloom in the North Pacific Subtropical Recirculation Gyre. Journal of Geophysical Research Oceans. 130(7).
2.
Toyama, Katsuya, Kazutaka Enyo, Yosuke Iida, et al.. (2025). Impact of Subtropical Mode Water Formation Variability on Surface Layer CO 2 Chemistry in the Western North Pacific. Journal of Geophysical Research Oceans. 130(5).
3.
Oka, Eitarou, et al.. (2025). Impact of Eighteen Degree Water thickness variation on the thermal and biogeochemical structure in the euphotic layer. Journal of Oceanography. 81(3). 235–246. 1 indexed citations
4.
Nonaka, Masami, Eitarou Oka, Satoshi Iizuka, & Tetsutaro Takikawa. (2024). Midlatitude ocean–atmosphere interactions and extreme events. Journal of Oceanography. 81(1). 1–3. 2 indexed citations
5.
Kawai, Yoshimi, et al.. (2024). Marine heatwave in the Oyashio region in 2022/23 and its impact on subsurface dissolved oxygen. Journal of Oceanography. 81(1). 23–39. 2 indexed citations
6.
Oka, Eitarou, Shusaku Sugimoto, Fumiaki Kobashi, et al.. (2023). Subtropical Mode Water south of Japan impacts typhoon intensity. Science Advances. 9(37). eadi2793–eadi2793. 11 indexed citations
7.
Qiu, Bo, Shuiming Chen, & Eitarou Oka. (2023). Why Did the 2017 Kuroshio Large Meander Event Become the Longest in the Past 70 Years?. Geophysical Research Letters. 50(10). 32 indexed citations
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Qiu, Bo, Shuiming Chen, Niklas Schneider, Eitarou Oka, & Shusaku Sugimoto. (2020). On the Reset of the Wind-Forced Decadal Kuroshio Extension Variability in Late 2017. Journal of Climate. 33(24). 10813–10828. 53 indexed citations
13.
Oka, Eitarou, et al.. (2019). Remotely Forced Decadal Physical and Biogeochemical Variability of North Pacific Subtropical Mode Water Over the Last 40 Years. Geophysical Research Letters. 46(3). 1555–1561. 42 indexed citations
14.
Inomata, Yayoi, Michio Aoyama, Takaki Tsubono, et al.. (2018). Estimate of Fukushima-derived radiocaesium in the North Pacific Ocean in summer 2012. Journal of Radioanalytical and Nuclear Chemistry. 318(3). 1587–1596. 12 indexed citations
15.
Kawai, Yoshimi, et al.. (2018). In Situ Evidence of Low-Level Atmospheric Responses to the Oyashio Front in Early Spring. Journal of the Meteorological Society of Japan Ser II. 97(2). 423–438. 7 indexed citations
16.
Kumamoto, Yuichiro, Michio Aoyama, Yasunori Hamajima, Eitarou Oka, & Akihiko Murata. (2018). Time evolution of Fukushima-derived radiocesium in the western subtropical gyre of the North Pacific Ocean by 2017. Journal of Radioanalytical and Nuclear Chemistry. 318(3). 2181–2187. 12 indexed citations
17.
Aoyama, Michio, Yasunori Hamajima, Yayoi Inomata, et al.. (2018). Radiocaesium derived from the TEPCO Fukushima accident in the North Pacific Ocean: Surface transport processes until 2017. Journal of Environmental Radioactivity. 189. 93–102. 27 indexed citations
18.
Kumamoto, Yuichiro, Michio Aoyama, Yasunori Hamajima, et al.. (2016). Fukushima-derived radiocesium in the western North Pacific in 2014. Journal of Radioanalytical and Nuclear Chemistry. 311(2). 1209–1217. 25 indexed citations
19.
Oka, Eitarou, Shinya Kouketsu, Katsuya Toyama, et al.. (2010). Formation and Subduction of Central Mode Water Based on Profiling Float Data, 2003–08. Journal of Physical Oceanography. 41(1). 113–129. 54 indexed citations
20.
Oka, Eitarou, Katsuya Toyama, & Toshio Suga. (2009). Subduction of North Pacific central mode water associated with subsurface mesoscale eddy. Geophysical Research Letters. 36(8). 34 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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