The 1st edition of Research.com ranking of the best scientists in the
arena of Earth Science was created using data
consolidated from various data sources including OpenAlex and
CrossRef. The bibliometric data for estimating the citation-based metrics were
gathered on 06-12-2021. Position in the ranking is based on a
researcher’s D-index (Discipline H-index), which
takes into account only publications and citation
metrics for an examined discipline.
The focus of our Earth Science research
Our best researchers ranking is a credible list of leading scientists from the discipline of Earth Science, created using a detailed examination of 166,880 scientists discovered from a variety of bibliometric data sources. For the area of Earth Science, over 6742 scientists were analysed.
What is D-index inclusion threshold for Earth Science
The D-index threshold for accepting a researcher to be examined is established at 30 if the majority of of their publications are in the field of Earth Science. The inclusion criteria for scientists to be considered into the ranking of top scientists are based on the D-index, proportion of the publications made within the specific discipline plus the awards and achievements of the scientists. The D-index threshold for listing leading researchers is set as an increment of 10 depending on the total number of scholars estimated for each scientific field whilst making sure that the top 1% of leading scientists are incorporated into the ranking. We estimate a proximity of 30% or less between a scholar’s general H-index and their D-index.
Extra verification rules
Since our primary goal is to guarantee that only actual scholars are mentioned in the ranking we are aware that metrics are never meant to be an absolute tool to quantify the output of researchers. Because of that we manually verify each profile and cross-correlate it against publications in a varied range of credible sources. Even though it’s not a element impacting a scholar’s position in the ranking, the number of papers published in prominent journals and conference proceedings should form a credible secondary signal of their contribution to research in a selected area of science. Position in the ranking is based on every scientist’s D-index using metrics collected from OpenAlex and CrossRef, which are the most credible and well-known bibliometric databases of this type open to the scientific community. A comprehensive explanation of our research process can be found on our methodology page.
Our goal is to inspire scholars, companies and decision-makers around the world to examine where top experts are heading and to give a way for the entire scientific community to get to know who the leading experts in specific fields of research, in various countries, or even within research institutions are.
Key findings for Earth Science
With 163 scholars Japan ranks in spot 9 globally.
As far as institutions are concerned, the institution with the highest number of leading researchers in Japan is University of Tokyo with 40 researchers affiliated with it being features in our Earth Science ranking. It is followed by Tokyo Institute of Technology with 18 researchers. Ranking thirds is Japan Agency for Marine-Earth Science and Technology with 14 scientists.
Prominent researchers listed in Japan are affiliated with Tohoku University, Shimane University, University of Electro-Communications, Kanazawa University, Okayama University, Kobe University, Tokyo University of Science, Ehime University, Kanazawa Medical University, University of Tsukuba.
Professor Dapeng Zhao from Tohoku University is featured as the best scholar in Japan in our ranking with a D-index of 86. Ranking on the second place in Japan is Shigenori Maruyama from Tokyo Institute of Technology with a D-index of 85. The third position in Japan is taken by Toshio Yamagata from Japan Agency for Marine-Earth Science and Technology with a D-index of 81.
The average D-index for the top 3% scientists is 80 against an average of 41 for all 163 scholars included in the ranking.
The average number of published papers in the discipline of Earth Science for the top 1% of scholars in the ranking is 334 in comparison to an average of 145 for all 163 researchers.
The average number of citations for the top 10% researchers is 16355 against an average of 7264 for all 163 scientists.