This map shows the geographic impact of Ryuhei Yamada'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 Ryuhei Yamada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuhei Yamada more than expected).
This network shows the impact of papers produced by Ryuhei Yamada. 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 Ryuhei Yamada. The network helps show where Ryuhei Yamada may publish in the future.
Co-authorship network of co-authors of Ryuhei Yamada
This figure shows the co-authorship network connecting the top 25 collaborators of Ryuhei Yamada.
A scholar is included among the top collaborators of Ryuhei Yamada 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 Ryuhei Yamada. Ryuhei Yamada is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Lorenz, R. D., M. P. Panning, Simon C. Stähler, et al.. (2019). Titan Seismology with Dragonfly: Probing the Internal Structure of the Most Accessible Ocean World. LPI. 2173.7 indexed citations
8.
Yamada, Ryuhei, et al.. (2019). Apollo Seismic Data Analysis in Python: ObsPy Module and Response Function. Lunar and Planetary Science Conference. 2492.1 indexed citations
Noda, Hirotomo, Takahide Mizuno, Noriyuki Namiki, et al.. (2015). Scientific Measurements of Hayabusa-2 Laser Altimeter (LIDAR). 1829. 6017.1 indexed citations
11.
Kikuchi, Fuyuhiko, Koji Matsumoto, Hideo Hanada, et al.. (2014). Recent Status of SELENE-2/VLBI Instrument. TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN. 12(ists29). Pk_13–Pk_19.1 indexed citations
12.
Yamada, Ryuhei, Fuyuhiko Kikuchi, T. Iwata, et al.. (2013). Radius of lunar core estimated by GRAIL results. AGU Fall Meeting Abstracts. 2013.1 indexed citations
13.
Yamada, Ryuhei, et al.. (2012). A New Retrieval System of Apollo Lunar Seismic Data with Data Correction. Lunar and Planetary Science Conference. 1712.1 indexed citations
14.
Matsumoto, Koji, Fuyuhiko Kikuchi, Ryuhei Yamada, et al.. (2012). Contribution of SELENE-2 geodetic measurements to constrain the lunar internal structure. AGUFM. 2012.1 indexed citations
15.
Yamada, Ryuhei, Hiroaki Shiraishi, Satoshi Tanaka, et al.. (2010). Improvement of the seismometer developed for the LUNAR-A penetrator. 38. 11.1 indexed citations
16.
Yamada, Ryuhei, R. García, Philippe Lognonné, et al.. (2010). optimization of seismic network design: application to a geophysical international lunar network. AGUFM. 2010.1 indexed citations
17.
Yamada, Ryuhei, Ichiro Yamada, N. Takeuchi, et al.. (2007). Seismic Observation by the Seismometer on Board the Penetrator for Lunar Exploration. Lunar and Planetary Science Conference. 1503.2 indexed citations
18.
Yamada, Ryuhei, Isao Yamada, Naoki Kobayashi, et al.. (2005). Characteristics of a Seismometer for the LUNAR-A Penetrator. 36th Annual Lunar and Planetary Science Conference. 1715.1 indexed citations
19.
FURUKAWA, Masato, et al.. (1986). . The Japanese Journal of Gastroenterological Surgery. 19(7). 1654–1657.
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.