%0 Journal Article %T Assessing Pre-Seismic Deformation in Southern Kamchatka: A Joint SBAS-InSAR and GNSS Analysis Prior to the July 29, 2025 Earthquake %A Bondur, V.G. %A Chimitdorzhiev, T.N. %A Dmitriev, A.V. %A Kirbizhekova, I.I. %A Titkov, N.N. %K Geodynamics, interseismic deformation, lithospheric block structure, radar interferometry, deformation mapping, July 29, 2025 earthquake, subduction zone, kamchatka megathrust earthquake %J Russian Journal of Earth Sciences %D 2026 %N 26 %P 0 %I Geophysical Center of the Russian Academy of Sciences