This paper is part of a Special Issue entitled Geophysical studies of the lithosphere and plate boundaries in honour of Roy D. Hyndman.

Dr. Roy D. Hyndman (1940–2023) (Fig. 1) was one of the world’s most respected geophysicists, a visionary scientific leader, and an inspring teacher. His more than 260 scientific publications span six decades, from a paper published as a Ph.D. student (Hyndman 1965) to two papers posthumously published in this special issue (Hyndman and Wang 2025; Yelisetti et al. 2025). From both scientific and technical perspectives, the breadth and diversity of...

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