A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a refined metric which selectively incorporates only those publications and citation counts relevant to the specific discipline under examination, in this case Earth Science. This enables a focused and discipline-sensitive evaluation of research impact and scholarly contribution.
Scope of Research and Inclusion Criteria
To construct the ranking, Research.com analyzed 279,971 scientist profiles identified from a diverse array of bibliometric databases spanning all scientific disciplines. Within this vast dataset, 10 scientists specializing in Earth Science specific to Saudi Arabia were examined. Qualification for inclusion in the ranking required a D-index of at least 30, coupled with the prerequisite that a majority of a scientist’s primary publications be rooted in Earth Science.
Beyond publication metrics, additional consideration was afforded to scientists’ awards and notable achievements within the Earth Science domain. The D-index cutoff for top researchers is calibrated in increments of 10 relative to the estimated total number of scholars per discipline, ensuring that the top 1% of leading experts are consistently reflected in the list. Furthermore, to preserve consistency and relevance, a researcher’s general H-index and their Discipline-specific D-index must align within a 30% proximity.
Verification and Quality Assurance Practices
Recognizing that raw bibliometric data alone cannot fully capture the multifaceted scholarly contribution of researchers, Research.com undertakes meticulous manual verification of all scientist profiles featured in the ranking. Each profile is cross-correlated against publications documented in a wide spectrum of trustworthy academic journals, conference proceedings, and other scholarly sources to confirm authenticity and relevance.
Although the number of papers published in high-impact journals and conferences does not directly influence a researcher’s ranking position, it serves as an important secondary indicator of their contribution to advancing knowledge in Earth Science. Ultimately, the ranking is established using each researcher's D-index, derived from the data gathered through OpenAlex, CrossRef, and additional key bibliometric sources.
We encourage readers and stakeholders to explore the full details of the methodology on our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire and empower researchers, corporations, and policymakers worldwide by providing clear, data-driven insights into where leading experts are directing their efforts. This ranking serves as an essential tool for the scientific community to identify and recognize top-tier experts in specific fields such as Earth Science, across countries and within research institutions.
By offering a transparent, rigorously vetted compilation of leading scholars, we aim to foster greater collaboration, informed decision-making, and an enhanced understanding of the global landscape of scientific expertise.
