A scientist's position in the ranking is determined by their D-index (Discipline H-index), a metric that specifically considers only the papers and citation impact within the examined discipline of Earth Science. This targeted approach allows for a precise and discipline-focused assessment of scholarly contributions.
Scope of Research and Qualification Criteria
The ranking is derived from an extensive examination of 279,971 scientist profiles aggregated across various bibliometric sources, encompassing all scientific disciplines. Within this dataset, 905 scientists specializing in Earth Science were carefully identified and evaluated.
To qualify for inclusion in the ranking, a scientist must have a D-index of at least 30. Additionally, the majority of their tier publications must be within the Earth Science domain. Beyond bibliometric indicators, the evaluation also considers scientists’ awards and recognized achievements in the field.
The D-index threshold for selecting top researchers is systematically adjusted in increments of 10 based on the overall estimated number of scholars per discipline. This method ensures the top 1% of leading scholars in each field are captured within the ranking. Furthermore, to maintain a close alignment between general impact and disciplinary focus, there is a required proximity of 30% or less between a scientist’s general H-index and their D-index.
Additional Verification Practices
We recognize that raw bibliometric data alone cannot serve as an absolute arbiter of academic impact. Consequently, all scientist profiles included in the ranking underwent rigorous manual verification. This process involved cross-referencing publication records against a broad array of trustworthy and authoritative sources.
While not directly influencing the ranking position, the quantity of papers published in prominent journals and major conference proceedings is regarded as an important secondary signal of a researcher’s contribution to Earth Science.
The position of each scientist is established using the D-index derived from data collected from OpenAlex and CrossRef, which are widely regarded as the most prominent bibliometric databases available to the research community. For a detailed overview of the methodology and the underlying principles guiding this ranking, we invite interested readers to consult our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to motivate researchers, corporations, and policymakers worldwide to gain insights into the trajectories of leading experts. This ranking serves as a valuable resource enabling the global scientific community to identify top specialists within specific fields, countries, and research institutions.
By providing a transparent, carefully curated, and data-driven representation of academic excellence, we aim to foster collaboration, inform funding priorities, and highlight emerging hubs of scientific innovation within Earth Science and beyond.
