Simple unilateral rupture of the great M w 8.8 2025 Kamchatka earthquake

8.8 to 9.0 event. Like 1952, the 2025 event nucleated at the northeastern end of the rupture, preceded by intense foreshock activity. Joint inversion of teleseismic and InSAR (Interferometric Synthetic Aperture Radar) data for the space-time slip distribution, with validation by means of forward modeling of deep-water tsunami recordings, revealed a southwestward elongated large-slip patch on the curved plate boundary. A slip of up to 14 meters was located offshore southern Kamchatka and Paramushir Island. The 1952 earthquake generated stronger tsunami signals in Hawaii, indicating a different slip distribution. Peak slip in 2025 exceeded the maximum slip deficit accumulated since 1952. Observations of volcanic…

• NN
  National Natural Science Foundation of China

  Awards: 42222403, 42376212
• IT
  Istanbul Teknik Üniversitesi
• MO
  Ministry of Science and Technology, Government of the People’s Republic of Bangladesh

  Award: MSFGPMR2024-502
• UD
  Université de Sfax

  Award: EAR1802364
• TU
  Technical University Varna
• NK
  National Key Research and Development Program of China

  Award: 2022YFF0800703
• BA
  Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi