A researcher’s position within the ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively considers papers and citation records within the specific discipline of Earth Science. This focus on discipline-centric impact allows for a more precise and meaningful evaluation of scholarly influence within the field.
Scope of Research and Qualification Criteria
The ranking examined 279,971 scientist profiles identified across a broad spectrum of bibliometric data repositories covering all scientific disciplines. From this comprehensive pool, 7 scientists specializing explicitly in Earth Science were evaluated in detail.
To qualify for inclusion in the ranking, a scientist’s D-index had to meet or exceed a threshold of 30, ensuring that only researchers with substantial disciplinary impact are considered. Moreover, a majority of their tier publications needed to be in the Earth Science domain to confirm focus and expertise in this area. Achievements and awards relevant to Earth Science also played a role as additional qualification factors, further vetting the candidates’ reputations and contributions.
The D-index qualifying thresholds are calibrated based on the estimated total number of scholars in each discipline, applying increments of 10 points accordingly. This approach guarantees the inclusion of the top 1% of leading scholars in each field while maintaining rigorous quality standards. Additionally, candidates were required to have a proximity of 30% or less between their general H-index and their discipline-specific D-index, preventing disparities that might otherwise misrepresent their core research impact.
Verification and Validation Practices
Recognizing that raw bibliometric data alone cannot comprehensively evaluate a researcher’s output, the team behind this ranking undertook meticulous manual verification processes. Each scientist profile was cross-checked against a wide array of trustworthy publication sources to ensure accuracy and authenticity.
While the number of papers published in renowned journals and prominent conference proceedings does not directly influence ranking positions, it serves as an important secondary indicator of each scientist’s contributions to the Earth Science research community.
The ranking positions themselves are established strictly based on the D-index calculated from data sourced through OpenAlex and CrossRef, widely respected and utilized bibliometric databases within the research community globally. For a detailed explanation of the methodology, readers are invited to consult our methodology page.
The Research.com Mission Behind the Ranking
Research.com’s mission in compiling and publishing this ranking is to motivate researchers, industry leaders, and policymakers worldwide to observe the trajectories of leading experts. By providing a reliable and transparent overview of the foremost scientists in specific disciplines, countries, or research institutions, we foster greater recognition and connectivity within the global scientific community.
Ultimately, this ranking aspires to be a trusted reference that aids research institutions, stakeholders, and the broader academic ecosystem in identifying and understanding who the leading voices are in Earth Science in Thailand, thereby encouraging collaboration and informed decision-making.
