TP9

Volcanism, tectonics, and seismicity represent key expressions of internal activity across the Solar System, fundamentally shaping the surfaces and interiors of terrestrial planets, moons, and icy satellites. Recent advances — including high-resolution orbital datasets, returned lunar samples, and seismic measurements from the Moon and Mars — have provided major insights into planetary interior structure, lithospheric processes, and the links between magmatism, tectonics, and seismic behavior. Together, these observations are transforming our understanding of how planetary bodies evolve and how endogenic processes manifest under different physical and environmental conditions.

Following the success of missions such as InSight, upcoming and recent missions — including Dragonfly, VERITAS, EnVision, Chang’e 6, and the Farside Seismic Suite — promise substantial progress in characterizing volcanic, tectonic, and seismic processes on Titan, Venus, and the Moon. These missions will refine constraints on planetary interiors, crustal structure, and the mechanisms driving seismicity. In parallel, small-body seismology is rapidly emerging as a new frontier, with future exploration concepts increasingly incorporating seismic investigations of asteroids and comets.

This session invites contributions addressing planetary volcanism, tectonics, and seismicity through observational, analytical, experimental, and theoretical approaches. We welcome studies of volcanic and tectonic landforms, magma–tectonic interactions, faulting and lithospheric deformation, seismicity and interior structure, as well as numerical and laboratory modeling. Submissions on geochemical and geophysical constraints, comparative planetology, mission concepts, instrumentation, and data analysis related to planetary interiors and seismic processes on planets and small bodies are particularly encouraged.