This map shows the geographic impact of S. Yamamoto'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 S. Yamamoto with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. Yamamoto more than expected).
This network shows the impact of papers produced by S. Yamamoto. 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 S. Yamamoto. The network helps show where S. Yamamoto may publish in the future.
Co-authorship network of co-authors of S. Yamamoto
This figure shows the co-authorship network connecting the top 25 collaborators of S. Yamamoto.
A scholar is included among the top collaborators of S. Yamamoto 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 S. Yamamoto. S. Yamamoto is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Haruyama, J., et al.. (2018). Formation Scenario of Continuous Slopes Associated with Lunar Mare Pit/Hole Structures. LPI. 1907.
5.
Yamamoto, S., Ryosuke Nakamura, Tsuneo Matsunaga, et al.. (2017). Global Distribution of Ultramafic Low Ca Pyroxene on the Moon. LPI. 1165.1 indexed citations
6.
Haruyama, J., M. Ohtake, Tsuneo Matsunaga, et al.. (2014). Data Products of SELENE (Kaguya) Terrain Camera for Future Lunar Missions. Lunar and Planetary Science Conference. 1304.15 indexed citations
7.
Ohtake, M., Shingo Kobayashi, H. Takeda, et al.. (2014). Solidification of the Lunar Magma Ocean Observed by Mg Number and Thorium Abundance Correlation of the Highland Crust. Lunar and Planetary Science Conference. 1578.1 indexed citations
Yamamoto, S., Ryosuke Nakamura, Tsuneo Matsunaga, et al.. (2013). Global Distribution of Mg-Spinel on the Moon Revealed by SELENE Spectral Profiler. Lunar and Planetary Science Conference. 1768.2 indexed citations
10.
Ohtake, M., Aya Yamamoto, Takamitsu Sugihara, et al.. (2011). Possible Crustal Boundary Exposed at Lunar Copernicus Crater. Lunar and Planetary Science Conference. 2139.2 indexed citations
11.
Ohtake, M., J. Haruyama, Tsuneo Matsunaga, et al.. (2010). Estimating Composition of Dark Mantle Deposit in Schrödinger Basin Using SELENE Spectral Data. Lunar and Planetary Science Conference. 1636.1 indexed citations
12.
Herrick, R. R., et al.. (2008). Constraints from Laboratory Experiments on Crater Excavation and Formation of an Uprange Forbidden Zone in an Oblique Impact. LPI. 2305.4 indexed citations
13.
Yamamoto, S., et al.. (2007). DIRECT OBSERVATION OF TRANSIENT CRATER GROWTH IN GRANULAR TARGET. LPI. 1452.1 indexed citations
14.
Herrick, R. R., et al.. (2007). Low-Velocity Oblique Impact Experiments in a Vacuum. LPI. 2141.6 indexed citations
15.
Sano, Kentaro, et al.. (2006). Massively Parallel Processor based on Systolic Architecture for High-Performance Computation of Difference Schemes. 한국전산유체공학회 학술대회논문집. 174–177.1 indexed citations
16.
Yamamoto, S., Tsuyoshi Komiya, Naoto Takafuji, & S. Maruyama. (2005). Diopside and Coesite Lamellae in Cr-spinel of Podiform Chromitite in Luobusa Ophiolite, Tibet: Evidence for Ultra-High Pressure Origin of the Chromite. AGU Fall Meeting Abstracts. 2005.1 indexed citations
17.
Yamamoto, S., N. Okabe, Toshihiko Kadono, Seiji Sugita, & Takafumi Matsui. (2005). Measurements of Ejecta Velocity Distribution by a High-Speed Video Camera. LPI. 1600.3 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.