Naoki Onuma

3.0k total citations · 3 hit papers
64 papers, 2.6k citations indexed

About

Naoki Onuma is a scholar working on Astronomy and Astrophysics, Geophysics and Ecology. According to data from OpenAlex, Naoki Onuma has authored 64 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Astronomy and Astrophysics, 18 papers in Geophysics and 15 papers in Ecology. Recurrent topics in Naoki Onuma's work include Astro and Planetary Science (27 papers), Geological and Geochemical Analysis (16 papers) and Isotope Analysis in Ecology (15 papers). Naoki Onuma is often cited by papers focused on Astro and Planetary Science (27 papers), Geological and Geochemical Analysis (16 papers) and Isotope Analysis in Ecology (15 papers). Naoki Onuma collaborates with scholars based in Japan, United States and Chile. Naoki Onuma's co-authors include T. K. Mayeda, Robert N. Clayton, Hiroshi Nagasawa, H. Higuchi, Hiroshi Wakita, Lawrence Grossman, Hiroshi Hamaguchi, Shohei Banno, Yoshito Matsui and R. N. Clayton and has published in prestigious journals such as Nature, Science and Analytical Chemistry.

In The Last Decade

Naoki Onuma

63 papers receiving 2.3k citations

Hit Papers

Trace element partition between two pyroxenes and the hos... 1968 2026 1987 2006 1968 1977 1976 100 200 300 400
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.

  1. Trace element partition between two pyroxenes and the host lava
    1968 479 citations Naoki Onuma, H. Higuchi et al. profile →
  2. Distribution of the pre-solar component in Allende and other carbonaceous chondrites
    1977 403 citations Robert N. Clayton, Naoki Onuma et al. profile →
  3. A classification of meteorites based on oxygen isotopes
    1976 334 citations Robert N. Clayton, Naoki Onuma et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Naoki Onuma Japan 22 1.4k 1.2k 430 350 299 64 2.6k
Gordon G. Goleš United States 27 1.2k 0.9× 963 0.8× 309 0.7× 319 0.9× 474 1.6× 72 2.3k
J. C. Laul United States 35 1.3k 0.9× 2.1k 1.7× 563 1.3× 605 1.7× 405 1.4× 154 3.7k
H. Higuchi Japan 24 1.1k 0.8× 607 0.5× 201 0.5× 315 0.9× 313 1.0× 95 2.3k
P. A. Baedecker United States 24 635 0.5× 734 0.6× 243 0.6× 228 0.7× 208 0.7× 59 1.7k
G. Manhès France 21 1.2k 0.9× 867 0.7× 319 0.7× 347 1.0× 339 1.1× 48 2.5k
J. H. Reynolds United States 32 1.2k 0.9× 1.7k 1.3× 531 1.2× 343 1.0× 276 0.9× 83 4.0k
R. Ganapathy United States 33 1.1k 0.8× 2.2k 1.8× 655 1.5× 336 1.0× 118 0.4× 80 3.1k
V. Rama Murthy United States 27 1.8k 1.3× 704 0.6× 193 0.4× 258 0.7× 440 1.5× 80 2.5k
W. R. Shields United States 20 554 0.4× 369 0.3× 413 1.0× 316 0.9× 275 0.9× 29 1.9k
E. Jarosewich United States 31 2.9k 2.1× 3.0k 2.5× 824 1.9× 311 0.9× 430 1.4× 114 4.9k

Countries citing papers authored by Naoki Onuma

Since Specialization
Citations

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

Fields of papers citing papers by Naoki Onuma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Naoki Onuma

This figure shows the co-authorship network connecting the top 25 collaborators of Naoki Onuma. A scholar is included among the top collaborators of Naoki Onuma 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 Naoki Onuma. Naoki Onuma 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.
Notsu, Kenji, L. López-Escobar, & Naoki Onuma. (1987). Along-arc variation of Sr-isotope composition in volcanic rocks from the Southern Andes (33.DEG.S-55.DEG.S).. GEOCHEMICAL JOURNAL. 21(6). 307–313. 12 indexed citations
2.
Onuma, Naoki, et al.. (1984). Sr/Ca-Ba/Ca systematics of volcanic rocks from the central Andes, southern Peru, and its implication for Andean magmatism.. GEOCHEMICAL JOURNAL. 18(5). 251–262. 6 indexed citations
3.
Clayton, R. N., T. K. Mayeda, I. D. Hutcheon, et al.. (1983). Oxygen isotopic compositions of chondrules in Allende and ordinary chondrites. NASA Technical Reports Server (NASA). 37–43. 91 indexed citations
4.
Onuma, Naoki, et al.. (1981). Sr/Ca-Ba/Ca systematics in Antarctic Ca-rich achondrites and their origins. Memoirs of National Institute of Polar Research. Special issue. 20. 202–210. 9 indexed citations
5.
Onuma, Naoki. (1981). Sr/Ca-Ba/Ca Systematics on Eucrite Parent Body, the Moon and the Earth. 334. 5 indexed citations
6.
Notsu, Kenji, et al.. (1980). Rapid Simultaneous 17 Elements Analysis of Some Yamato Meteorites by ICP-OES. Memoirs of National Institute of Polar Research. Special issue. 17. 152–158. 11 indexed citations
7.
Nishida, Norimasa, et al.. (1979). A Classification of Several YAMATO-74 Chondrites. Memoirs of National Institute of Polar Research. Special issue. 12. 144–160. 1 indexed citations
8.
Nagasawa, H. & Naoki Onuma. (1979). High Temperature Heating of the Allende Meteorite II. Fractionation of the Rare Earth Elements. Lunar and Planetary Science Conference. 884–886. 2 indexed citations
9.
Onuma, Naoki, et al.. (1979). Crystal struture control on trace element partition in molluscan shell formation.. GEOCHEMICAL JOURNAL. 13(4). 187–189. 34 indexed citations
10.
Onuma, Naoki, Robert N. Clayton, T. K. Mayeda, & Keizô Yanai. (1978). Oxygen Isotopes in Several Yamato Meteorites. Memoirs of National Institute of Polar Research. Special issue. 8(8). 220–224. 3 indexed citations
11.
Onuma, Naoki, et al.. (1976). Chemical inhomogeneity in a single euhedral olivine from the Murchison C2 chondrite. GEOCHEMICAL JOURNAL. 10(4). 205–209. 4 indexed citations
12.
Onuma, Naoki, Tsuyoshi Tanaka, & Akimasa Masuda. (1974). Rare-earth abundances in two mineral separates with distinct oxygen isotopic composition from an Allende inclusion. Meteoritics and Planetary Science. 9. 387. 5 indexed citations
13.
Clayton, R. N., T. K. Mayeda, & Naoki Onuma. (1971). Oxygen isotope fractionation in Apollo 12 rocks and soils. NASA STI Repository (National Aeronautics and Space Administration). 2. 1417. 33 indexed citations
14.
Onuma, Naoki, R. N. Clayton, & T. K. Mayeda. (1970). Apollo 11 rocks: Oxygen isotope fractionation between minerals, and an estimate of the temperature. Geochimica et Cosmochimica Acta Supplement. 1. 1429. 1 indexed citations
15.
Hamaguchi, Hiroshi, et al.. (1969). The abundances of arsenic, tin and antimony in chondritic meteorites. Geochimica et Cosmochimica Acta. 33(4). 507–518. 30 indexed citations
16.
Higuchi, H., Kenji TOMURA, Naoki Onuma, & Hiroshi Hamaguchi. (1969). Rare earth abundances in several geochemical standard rocks. GEOCHEMICAL JOURNAL. 3(2-3). 171–180. 12 indexed citations
17.
Hamaguchi, Hiroshi, et al.. (1967). Determination of indium in rocks by neutron activation analysis. BUNSEKI KAGAKU. 16(11). 1233–1238. 7 indexed citations
18.
Hamaguchi, Hiroshi, et al.. (1964). Anion-exchange behaviour of scandium in chloride-thiocyanate media. Talanta. 11(3). 495–500. 20 indexed citations
19.
Hamaguchi, Hiroshi, et al.. (1964). Determination of trace quantities of tin by neutron activation analysis. Analytica Chimica Acta. 30. 335–345. 15 indexed citations
20.
Hamaguchi, Hiroshi, et al.. (1961). Determination of Copper in Silicates with Neutron Activation and Spectrochemical Methods. Nippon kagaku zassi. 82(9). 1190–1193. 1 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Gordon G. Goleš Breakdown of academic impact, for papers by J. C. Laul Breakdown of academic impact, for papers by H. Higuchi Breakdown of academic impact, for papers by P. A. Baedecker Breakdown of academic impact, for papers by G. Manhès Breakdown of academic impact, for papers by J. H. Reynolds Breakdown of academic impact, for papers by R. Ganapathy Breakdown of academic impact, for papers by V. Rama Murthy Breakdown of academic impact, for papers by W. R. Shields Breakdown of academic impact, for papers by E. Jarosewich
Rankless by CCL
2026