Koji Umeda

643 total citations
44 papers, 477 citations indexed

About

Koji Umeda is a scholar working on Geophysics, Atmospheric Science and Artificial Intelligence. According to data from OpenAlex, Koji Umeda has authored 44 papers receiving a total of 477 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Geophysics, 14 papers in Atmospheric Science and 6 papers in Artificial Intelligence. Recurrent topics in Koji Umeda's work include earthquake and tectonic studies (30 papers), Geological and Geochemical Analysis (28 papers) and Geology and Paleoclimatology Research (14 papers). Koji Umeda is often cited by papers focused on earthquake and tectonic studies (30 papers), Geological and Geochemical Analysis (28 papers) and Geology and Paleoclimatology Research (14 papers). Koji Umeda collaborates with scholars based in Japan, United States and Canada. Koji Umeda's co-authors include Koichi Asamori, Teruki Oikawa, Yasuo Ogawa, Shintaro Hayashi, Takahiro Tagami, Horst Zwingmann, Masakazu Niwa, Takashi NAGAO, Masao Ban and Jun‐Ichi Kimura and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geophysical Research Letters and Chemical Geology.

In The Last Decade

Koji Umeda

42 papers receiving 460 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji Umeda Japan 14 424 101 70 39 30 44 477
Charlotte Ribes France 14 378 0.9× 134 1.3× 51 0.7× 20 0.5× 61 2.0× 20 527
L. E. Clor United States 10 234 0.6× 79 0.8× 63 0.9× 38 1.0× 23 0.8× 20 335
R. Lapointe France 12 450 1.1× 94 0.9× 49 0.7× 21 0.5× 82 2.7× 12 574
Jan Mrlina Czechia 13 329 0.8× 71 0.7× 40 0.6× 28 0.7× 24 0.8× 38 405
F. Mangasini Tanzania 5 308 0.7× 62 0.6× 70 1.0× 38 1.0× 60 2.0× 8 374
Sarah E. Gelman United States 9 510 1.2× 59 0.6× 158 2.3× 26 0.7× 49 1.6× 19 594
Charlie Kergaravat France 9 243 0.6× 101 1.0× 39 0.6× 15 0.4× 46 1.5× 14 359
A. F. Flinders United States 11 292 0.7× 50 0.5× 40 0.6× 23 0.6× 20 0.7× 28 369
Christophe Y. Galerne Germany 9 320 0.8× 78 0.8× 108 1.5× 61 1.6× 116 3.9× 15 419
Teresa Trua Italy 11 539 1.3× 123 1.2× 124 1.8× 8 0.2× 15 0.5× 20 594

Countries citing papers authored by Koji Umeda

Since Specialization
Citations

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

Fields of papers citing papers by Koji Umeda

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Umeda

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Umeda. A scholar is included among the top collaborators of Koji Umeda 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 Koji Umeda. Koji Umeda 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.
2.
3.
Sueoka, Shigeru, Koji Umeda, Masakazu Niwa, et al.. (2016). Cooling and Denudation History of the Tsuruga Body of Kojaku Granite, Southwest Japan, Constrained from Multi-system Thermochronology. Journal of Geography (Chigaku Zasshi). 125(2). 201–219. 9 indexed citations
4.
Zwingmann, Horst, et al.. (2013). Constraining the timing of brittle deformation and faulting in the Toki granite, central Japan. Chemical Geology. 351. 168–174. 28 indexed citations
5.
Umeda, Koji, et al.. (2013). Tectonic shortening and coeval volcanism during the Quaternary, Northeast Japan arc. Journal of Earth System Science. 122(1). 137–147. 6 indexed citations
6.
Umeda, Koji, et al.. (2012). Cooling history of the Cretaceous Toki granite in the eastern Sanyo Belt, Central Japan. Japanese Magazine of Mineralogical and Petrological Sciences. 41(2). 39–46. 19 indexed citations
7.
Asamori, Koichi, Koji Umeda, Yasuo Ogawa, & Teruki Oikawa. (2010). Electrical Resistivity Structure and Helium Isotopes around Naruko Volcano, Northeastern Japan and Its Implication for the Distribution of Crustal Magma. International Journal of Geophysics. 2010. 1–7. 7 indexed citations
8.
Umeda, Koji, et al.. (2009). Heat source for an amagmatic hydrothermal system, Noto Peninsula, Central Japan. Journal of Geophysical Research Atmospheres. 114(B1). 14 indexed citations
9.
Umeda, Koji, et al.. (2009). Helium isotopes as a tool for detecting concealed active faults. Geochemistry Geophysics Geosystems. 10(8). 26 indexed citations
10.
Umeda, Koji, et al.. (2008). High 3He emanations from the source regions of recent large earthquakes, central Japan. Geochemistry Geophysics Geosystems. 9(12). 15 indexed citations
11.
Tomiyama, Shingo, et al.. (2007). Alteration type and thermoluminescence ages of altered rocks in the Mutsu-Hiuchidake volcanic field, Shimokita peninsula, NE Japan. Japanese Magazine of Mineralogical and Petrological Sciences. 36(4). 111–121. 2 indexed citations
12.
Umeda, Koji, et al.. (2007). Helium isotopes as geochemical indicators of a serpentinized fore‐arc mantle wedge. Journal of Geophysical Research Atmospheres. 112(B10). 20 indexed citations
13.
Umeda, Koji, et al.. (2007). Multiple lines of evidence for crustal magma storage beneath the Mesozoic crystalline Iide Mountains, northeast Japan. Journal of Geophysical Research Atmospheres. 112(B5). 7 indexed citations
14.
Umeda, Koji, et al.. (2006). Heat Flux Distribution in Japan Taking Account of Advection Processes. 28(2). 211–221. 2 indexed citations
15.
Umeda, Koji, et al.. (2006). Variations in the 3He/4He ratios of hot springs on Shikoku Island, southwest Japan. Geochemistry Geophysics Geosystems. 7(4). 11 indexed citations
16.
17.
Umeda, Koji, et al.. (2001). Cooling history of the Takahama Granitic Rocks, Shikoku, Ryoke Belt, Southwest Japan, with special reference to the thermal effect of the Neogene intrusive rocks.. Japanese Magazine of Mineralogical and Petrological Sciences. 30(1). 17–27. 7 indexed citations
18.
Umeda, Koji, et al.. (1999). Geology of Hachimantai volcanic field and temporal. Spatial variation of the magma compositions.. JOURNAL OF MINERALOGY PETROLOGY AND ECONOMIC GEOLOGY. 94(6). 187–202. 13 indexed citations
19.
Umeda, Koji, et al.. (1999). Sequence of the volcanism and tectonics during the last 2.0 million years along the volcanic front in Tohoku District, NE Japan. 44(5). 233–249. 17 indexed citations
20.
Umeda, Koji. (1992). Geology and Petrography of Mutsu-Hiuchidake volcano, Shimokita peninsula.. JOURNAL OF MINERALOGY PETROLOGY AND ECONOMIC GEOLOGY. 87(10). 420–429. 3 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 Charlotte Ribes Breakdown of academic impact, for papers by L. E. Clor Breakdown of academic impact, for papers by R. Lapointe Breakdown of academic impact, for papers by Jan Mrlina Breakdown of academic impact, for papers by F. Mangasini Breakdown of academic impact, for papers by Sarah E. Gelman Breakdown of academic impact, for papers by Charlie Kergaravat Breakdown of academic impact, for papers by A. F. Flinders Breakdown of academic impact, for papers by Christophe Y. Galerne Breakdown of academic impact, for papers by Teresa Trua
Rankless by CCL
2026