Tokuji Utsu

5.7k total citations · 2 hit papers
44 papers, 4.2k citations indexed

About

Tokuji Utsu is a scholar working on Geophysics, Artificial Intelligence and Ocean Engineering. According to data from OpenAlex, Tokuji Utsu has authored 44 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Geophysics, 26 papers in Artificial Intelligence and 4 papers in Ocean Engineering. Recurrent topics in Tokuji Utsu's work include earthquake and tectonic studies (31 papers), Earthquake Detection and Analysis (22 papers) and Seismology and Earthquake Studies (22 papers). Tokuji Utsu is often cited by papers focused on earthquake and tectonic studies (31 papers), Earthquake Detection and Analysis (22 papers) and Seismology and Earthquake Studies (22 papers). Tokuji Utsu collaborates with scholars based in Japan and United States. Tokuji Utsu's co-authors include Yosihiko Ogata, Motoki Matsuura, Koichi Katsura, Takeshi Mikumo, Noriyuki Iwata and Kenji Matsumoto and has published in prestigious journals such as Reviews of Geophysics, Geophysical Journal International and Bulletin of the Seismological Society of America.

In The Last Decade

Tokuji Utsu

42 papers receiving 3.8k citations

Hit Papers

align trajectories

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.

The Centenary of the Omori Formula for a Decay Law of Aftershock Activity.

1995 1.0k citations Tokuji Utsu, Yosihiko Ogata et al. Journal of Physics of the Earth profile →
A statistical study on the occurrence of aftershocks.

1961 859 citations Tokuji Utsu profile →

Peers

Tokuji Utsu

GEOPH

CSE

C. F. Richter United States

B. Gutenberg United States

Paul A. Reasenberg United States

Francesco Mulargia Italy

Danijel Schorlemmer Germany

Sebastian Hainzl Germany

Max Wyss United States

Bruce A. Bolt United States

V. G. Kossobokov Russia

R. Shcherbakov Canada

C. F. Richter United States

Tokuji Utsu

3.9k ×1.0

GEOPH

992 ×0.8

216 ×0.6

697 ×2.7

CSE

312 ×1.8

Citations per year, relative to Tokuji Utsu Tokuji Utsu (= 1×) peers C. F. Richter

Countries citing papers authored by Tokuji Utsu

Since Specialization

Citations

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

Fields of papers citing papers by Tokuji Utsu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tokuji Utsu

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Iwata, Noriyuki, et al.. (1999). Improvements of Apatite-Forming Abilities on Pure and Sodium-Containing Diopside Substrates Using Porous Diopside Thin Films as Nucleating Agent. MRS Proceedings. 599. 4 indexed citations

Utsu, Tokuji. (1999). Representation and Analysis of the Earthquake Size Distribution: A Historical Review and Some New Approaches. Birkhäuser Basel eBooks. 509–535. 51 indexed citations

Ogata, Yosihiko, Tokuji Utsu, & Koichi Katsura. (1996). Statistical discrimination of foreshocks from other earthquake clusters. Geophysical Journal International. 127(1). 17–30. 48 indexed citations

Utsu, Tokuji. (1984). Estimation of Parameters for Recurrence Models of Earthquakes. 東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo. 59(1). 53–66. 126 indexed citations

Utsu, Tokuji. (1983). Probabilities associated with earthquake prediction and their relationships. 2(2). 105–114. 17 indexed citations

Utsu, Tokuji. (1978). An Investigation into the Discrimination of Foreshock Sequences from Earthquake Swarms. Zisin (Journal of the Seismological Society of Japan 2nd ser ). 31(2). 129–135. 10 indexed citations

Utsu, Tokuji. (1975). Regional variation of travel-time residuals of P waves from nearby deep earthquakes in Japan and vicinity.. Journal of Physics of the Earth. 23(4). 367–380. 18 indexed citations

Utsu, Tokuji. (1973). TEMPORAL VARIATIONS IN TRAVEL TIME RESIDUALS OF P WAVES FROM NEVADA SOURCES. Journal of Physics of the Earth. 21(4). 475–480. 11 indexed citations

Utsu, Tokuji. (1972). Aftershocks and Earthquake Statistics (4) : Analyses of the Distribution of Earthquakes in Magnitude, Time and Space with Special Consideration to Clustering Characteristics of Earthquake Occurrence(2). Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 4(1). 1–42. 72 indexed citations

10.

Utsu, Tokuji. (1971). Aftershocks and Earthquake Statistics(2) : Further Investigation of Aftershocks and Other Earthquake Sequences Based on a New Classification of Earthquake Sequences. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 3(4). 197–266. 105 indexed citations

11.

Utsu, Tokuji. (1970). Aftershocks and Earthquake Statistics(1) : Some Parameters Which Characterize an Aftershock Sequence and Their Interrelations. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 3(3). 129–195. 178 indexed citations

12.

Utsu, Tokuji. (1970). Time and Space Distribution of Deep Earthquakes in Japan. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 3(3). 117–128. 3 indexed citations

13.

Utsu, Tokuji, et al.. (1969). A Note on the Statistical Nature of Energy and Strain Release in Earthquake Sequences. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 3(2). 49–64. 7 indexed citations

14.

Utsu, Tokuji. (1967). Anomalies in Seismic Wave Velocity and Attenuation Associated with a Deep Earthquake Zone(1). Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 3(1). 1–25. 41 indexed citations

15.

Utsu, Tokuji. (1966). Regional Differences in Absorption of Seismic Waves in the Upper Mantle as Inferred from Abnomal Distributions of Seismic Intensities. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 2(4). 359–374. 31 indexed citations

16.

Utsu, Tokuji. (1966). A Statistical Significance Test of the Difference in b-value between Two Earthquake Groups. Journal of Physics of the Earth. 14(2). 37–40. 184 indexed citations

17.

Utsu, Tokuji. (1962). On the nature of three Alaskan aftershock sequences of 1957 and 1958. Bulletin of the Seismological Society of America. 52(2). 279–297. 61 indexed citations

18.

Utsu, Tokuji. (1961). A statistical study on the occurrence of aftershocks.. 30(4). 521–605. 859 indexed citations breakdown →

19.

Mikumo, Takeshi, et al.. (1961). 10. Crustal Structure in Central Japan as Derived from the Miboro Explosion-Seismic Observations : Part 2. On the Crustal Structure. 東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo. 39(2). 327–349. 13 indexed citations

20.

Utsu, Tokuji. (1951). On Corona Dischar_??_es from Pointed Bodies. caused by Volume Char_??_e. Journal of the Meteorological Society of Japan Ser II. 29(9). 319–323.

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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