A researcher’s position in this ranking is determined by their D-index (Discipline H-index), a citation metric that isolates papers and citations strictly within the examined discipline—in this case, Earth Science. This focus on discipline-specific impact reflects a more accurate measure of a scientist’s contributions within their specialized field rather than generalized citation metrics.
Scope and Qualification Criteria of the Ranking
This edition involved an extensive examination of 279,971 scientist profiles sourced from diverse bibliometric repositories spanning all academic disciplines. Among these, precisely 3 scientists specializing in Earth Science in Morocco were identified and evaluated for inclusion in the ranking.
To qualify, a scientist was required to have a D-index of at least 30, representing a significant level of scholarly impact within Earth Science. Furthermore, the majority of a qualifying scientist’s tier publications needed to be focused explicitly in the area of Earth Science, demonstrating domain-specific expertise. Beyond bibliometric indicators, scientists’ awards and achievements within Earth Science were also considered to enrich the evaluation and recognize broader academic contributions.
The threshold D-index for identifying top researchers is calibrated in increments of 10 based on the estimated total number of scholars per discipline, ensuring that the ranking consistently captures the top 1% of leading scholars in the field. Additionally, to maintain the discipline specificity integrity of the ranking, a proximity criterion was applied whereby the difference between a scientist’s general H-index and their D-index must be 30% or less.
Verification and Validation Practices
Research.com acknowledges the inherent limitations of raw bibliometric data as absolute measures of scholarly output. Consequently, all scientist profiles included in this ranking underwent manual verification and were cross-correlated against publications documented in a broad range of trusted sources, enhancing the reliability and accuracy of the data.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s position in the ranking, it is recognized as a valuable secondary signal reflecting a scientist’s contribution and visibility in the Earth Science community.
Ultimately, ranking positions are established exclusively using each researcher’s D-index derived from information gathered through the well-established bibliometric databases OpenAlex and CrossRef. These platforms are among the most prominent and widely respected in the academic research community for collecting and curating such data.
For comprehensive details on the methodology employed in creating this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to motivate researchers, industry leaders, and policymakers worldwide to track the directions and trajectories of leading experts within their fields. By providing an authoritative, transparent, and meticulously curated platform, we aim to facilitate the scientific community’s access to information regarding who the foremost experts are within specific disciplines, countries, or research institutions.
We believe this ranking serves as a vital tool to foster collaboration, identify emerging trends, and recognize excellence in research—thereby strengthening the global scientific ecosystem and informing decision making across academia, industry, and government bodies.
