Surface deformations of the 6 February 2023 earthquake sequence, eastern Türkiye

• 成果类型: Article
• 署名作者: Meng, Jiannan; Kusky, Timothy; Mooney, Walter D.; Bozkurt, Erdin; Bodur, Mehmet Nuri; Wang, Lu
• 署名单位: China University of Geosciences; China University of Geosciences; Middle East Technical University; United States Department of the Interior; United States Geological Survey; Hakkari University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10227
• DOI: 10.1126/science.adj3770
• 发表日期: 2024-01-19
• 页码: 298-305
• 关键词: strike-slip faults; point measurements; rupture; zones; california; magnitude; tectonics; EVOLUTION; inversion

摘要

Two powerful earthquakes struck T & uuml;rkiye on 6 February 2023. The initial rupture was on the Dead Sea fault zone, yet maximum displacements and energy release [moment magnitude (M-w) 7.8] occurred 24 seconds later when rupture transferred to the East Anatolian fault zone (EAFZ). More than 7 hours later, a M-w 4.5 aftershock at the junction of the EAFZ with the east-west striking & Ccedil;ardak-S & uuml;rg & uuml; fault was followed 86 minutes later by the second large (M-w 7.5) earthquake, suggesting a causal relationship. We provide quantitative ground and aerial documentation of surface offsets and kinematics from the slipped faults, providing important data on surface deformation during large continental strike-slip earthquakes, rupture propagation mechanisms, and how slip may be transferred between complex fault systems. We also provide insight into how slip along linked fault systems accommodates global plate motions.