A scientist’s position within the ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively accounts for papers and corresponding citation data related to the examined discipline—Earth Science in this instance. This discipline-specific approach allows for a precise evaluation of scholarly impact within the targeted area of research.
Scope of Research and Ranking Criteria
The underlying scope of this ranking involved examining 279,971 scientist profiles culled from a range of bibliometric data sources across all academic disciplines. Within the ambit of Earth Science, 2 scientists were specifically identified and assessed.
To qualify for inclusion in the ranking, a scientist’s D-index was required to be at least 30. Additionally, the majority of their tier publications needed to lie within the sphere of Earth Science. Awards and significant achievements related to Earth Science were also incorporated as supplementary factors to gauge research excellence.
The D-index threshold for considering top researchers is dynamically set as increments of 10, reflecting the estimated total number of scholars within each discipline. This methodology ensures that the ranking consistently identifies the top 1% of leading scholars. Furthermore, to maintain relevance and accuracy, selected scientists had to exhibit a proximity of no more than 30% between their overall H-index and D-index, verifying their specialization and impact within Earth Science.
Additional Verification Practices
At Research.com, we recognize that raw bibliometric data should never be viewed as an absolute measure of scholarly output. Accordingly, each scientist’s profile underwent meticulous manual verification. Profiles were cross-correlated against their publications listed in a broad spectrum of trustworthy and authoritative sources to verify accuracy and authenticity.
While the total number of papers published in prominent journals and conferences does not directly influence a researcher’s rank, it is considered a valuable secondary signal of scientific contribution and influence within their discipline. Ultimately, the ranking positions are established based on each researcher’s D-index as derived from OpenAlex and CrossRef—the most prominent bibliometric databases available to the research community.
For a deeper understanding of the research methodology and evaluation processes employed, we encourage readers to visit our methodology page.
Research.com’s Agenda and Commitment
The core mission behind the creation of this ranking is to motivate researchers, companies, and policy makers worldwide to observe and understand where leading experts in science are focusing their efforts. By providing a transparent and rigorous way for the global scientific community to identify the foremost experts within specific disciplines, countries, and research institutions, Research.com aims to catalyze collaborations, investments, and informed decision-making within the scientific ecosystem.
Our meticulous approach and commitment to data integrity underpin the credibility of this ranking, ensuring it serves as a trusted resource for academic institutions, funding bodies, and researchers seeking to benchmark and recognize excellence in Earth Science research.
