K. Hakamada

1.1k total citations
43 papers, 740 citations indexed

About

K. Hakamada is a scholar working on Astronomy and Astrophysics, Molecular Biology and Oceanography. According to data from OpenAlex, K. Hakamada has authored 43 papers receiving a total of 740 indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Astronomy and Astrophysics, 15 papers in Molecular Biology and 7 papers in Oceanography. Recurrent topics in K. Hakamada's work include Solar and Space Plasma Dynamics (42 papers), Ionosphere and magnetosphere dynamics (28 papers) and Astro and Planetary Science (16 papers). K. Hakamada is often cited by papers focused on Solar and Space Plasma Dynamics (42 papers), Ionosphere and magnetosphere dynamics (28 papers) and Astro and Planetary Science (16 papers). K. Hakamada collaborates with scholars based in Japan, United States and India. K. Hakamada's co-authors include S.‐I. Akasofu, Takashi Murayama, M. Tokumaru, K. Fujiki, Masayoshi Kojima, S.‐I. Akasofu, M. Kojima, T. Ohmi, Takao Aoki and A. Yokobe and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, The Astrophysical Journal and Geophysical Research Letters.

In The Last Decade

K. Hakamada

43 papers receiving 618 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K. Hakamada Japan 16 732 284 61 45 35 43 740
E. Huttunen Finland 7 811 1.1× 386 1.4× 27 0.4× 56 1.2× 28 0.8× 11 829
T. Žic Croatia 16 950 1.3× 216 0.8× 40 0.7× 24 0.5× 38 1.1× 19 960
C. A. de Koning United States 16 679 0.9× 176 0.6× 55 0.9× 21 0.5× 27 0.8× 33 692
Nandita Srivastava India 18 1.1k 1.4× 318 1.1× 82 1.3× 46 1.0× 32 0.9× 87 1.1k
N. Gopalswamy United States 15 1.2k 1.7× 277 1.0× 82 1.3× 68 1.5× 66 1.9× 33 1.3k
G. D. R. Attrill United Kingdom 19 1.1k 1.5× 228 0.8× 60 1.0× 30 0.7× 20 0.6× 29 1.1k
S. L. McGregor United States 10 409 0.6× 142 0.5× 46 0.8× 20 0.4× 28 0.8× 17 427
Deborah Baker United Kingdom 18 1.1k 1.6× 320 1.1× 59 1.0× 17 0.4× 23 0.7× 49 1.2k
S. Bravo Mexico 14 441 0.6× 140 0.5× 36 0.6× 12 0.3× 31 0.9× 42 465
V. Ruždjak Croatia 16 665 0.9× 205 0.7× 88 1.4× 14 0.3× 101 2.9× 54 681

Countries citing papers authored by K. Hakamada

Since Specialization
Citations

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

Fields of papers citing papers by K. Hakamada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Hakamada

This figure shows the co-authorship network connecting the top 25 collaborators of K. Hakamada. A scholar is included among the top collaborators of K. Hakamada 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 K. Hakamada. K. Hakamada 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.
Tokumaru, M., et al.. (2018). Rarefaction of the Very Slow (<350 km/s) Solar Wind in Cycle 24 Compared With Cycle 23. Journal of Geophysical Research Space Physics. 123(4). 2520–2534. 5 indexed citations
2.
Tokumaru, M., et al.. (2017). Relation Between Coronal Hole Areas and Solar Wind Speeds Derived from Interplanetary Scintillation Measurements. Solar Physics. 292(3). 29 indexed citations
3.
Jackson, B. V., Hsiu-Shan Yu, M. Tokumaru, et al.. (2016). A Statistical Study of the Radial and North-South Component Values of Heliospheric Magnetic Field. Japan Geoscience Union. 1 indexed citations
4.
Fujiki, K., M. Tokumaru, Tomoya Iju, K. Hakamada, & Masayoshi Kojima. (2015). Relationship Between Solar-Wind Speed and Coronal Magnetic-Field Properties. Solar Physics. 290(9). 2491–2505. 22 indexed citations
5.
Kojima, M., et al.. (2007). What Coronal Parameters Determine Solar Wind Speed. 369. 549. 3 indexed citations
6.
Fujiki, K., M. Kojima, M. Tokumaru, et al.. (2005). Relation between solar wind velocity and properties of its source region. Advances in Space Research. 35(12). 2185–2188. 9 indexed citations
7.
Kojima, M., M. Tokumaru, K. Fujiki, et al.. (2003). The Relation Between the Solar Wind Velocity and the Magnetic Conditions of Coronal Holes. AGUFM. 2003. 1 indexed citations
8.
Ohmi, T., M. Kojima, K. Fujiki, et al.. (2003). Polar low‐speed solar wind reappeared at the solar activity maximum of cycle 23. Geophysical Research Letters. 30(7). 7 indexed citations
9.
Ohmi, T., M. Kojima, A. Yokobe, et al.. (2001). Polar low‐speed solar wind at the solar activity maximum. Journal of Geophysical Research Atmospheres. 106(A11). 24923–24935. 8 indexed citations
10.
Tokumaru, M., et al.. (1999). Radial variation of solar wind velocity near the sun. AIP conference proceedings. 313–316. 1 indexed citations
11.
Hakamada, K. & Masayoshi Kojima. (1994). Solar wind speed and its acceleration inferred using the interplanetary scintillation method in carrington rotation 1753. Solar Physics. 153(1-2). 419–435. 10 indexed citations
12.
Hakamada, K., Masayoshi Kojima, & Takakiyo Kakinuma. (1991). Solar wind speed and He I (1083 nm) absorption line intensity. Journal of Geophysical Research Atmospheres. 96(A4). 5397–5403. 10 indexed citations
13.
Hakamada, K. & K. Maezawa. (1985). Spatial variation of the solar wind speed in 1976 and 1977. Memoirs of National Institute of Polar Research. Special issue. 36(36). 232–237. 6 indexed citations
14.
Fry, C. D., S.‐I. Akasofu, J. T. Hoeksema, & K. Hakamada. (1985). The three-dimensional geometry of the heliospheric current sheet. Planetary and Space Science. 33(8). 915–923. 9 indexed citations
15.
Hakamada, K., et al.. (1983). Cosmic Ray North-South Asymmetry Related with the Latitudinal Angular Distance of the Earth from the Heliospheric Current Sheet. ICRC. 3. 358. 1 indexed citations
16.
Akasofu, S.‐I. & K. Hakamada. (1982). Magnetic field configuration of the heliosphere and spiral galaxies. The Astrophysical Journal. 253. 552–552. 4 indexed citations
17.
Murayama, Takashi, et al.. (1980). Empirical formula to relate the auroral electrojet intensity with interplanetary parameters. Planetary and Space Science. 28(8). 803–813. 59 indexed citations
18.
Hakamada, K., Takao Aoki, & Takashi Murayama. (1980). Influence of the east-west component of the interplanetary magnetic field on the intensity of the auroral electrojet. Planetary and Space Science. 28(1). 29–39. 15 indexed citations
19.
Murayama, Takashi, K. Maezawa, & K. Hakamada. (1979). Time Profiles of Forbush Decreases and Their Relation to the Structure of the Interplanetary Magnetic Field. ICRC. 3. 416. 5 indexed citations
20.
Murayama, Takashi & K. Hakamada. (1975). Effects of solar wind parameters on the development of magnetospheric substorms. Planetary and Space Science. 23(1). 75–91. 73 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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