Unexpected far-field deformation of the 2023 Kahramanmaraş earthquakes revealed by space geodesy

• 成果类型: Article
• 署名作者: Ergintav, S.; Vernant, P.; Tan, O.; Karabulut, H.; Ozarpaci, S.; Floyd, M.; Konca, A. O.; Cakir, Z.; Acarel, D.; Cakmak, R.; Vasyura-Bathke, H.; Dogan, U.; Kurt, A. I.; Ozdemir, A.; Ayruk, E. T.; Turgut, M.; Ozel, O.; Farimaz, I.
• 署名单位: Bogazici University; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Universite de Montpellier; Istanbul University - Cerrahpasa; Bogazici University; Yildiz Technical University; Massachusetts Institute of Technology (MIT); Istanbul Technical University; Gebze Technical University; Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Helmholtz Association; Helmholtz-Center Potsdam GFZ German Research Center for Geosciences
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8944
• DOI: 10.1126/science.ado4220
• 发表日期: 2024-10-18
• 页码: 328-335
• 关键词: middle-east; fault zone; turkey; slip; anatolia; crustal; MODEL; shear; izmit

摘要

The spatiotemporal pattern of surface displacements from large earthquakes provides crucial insights about the deformation of Earth's crust at various scales and the interactions among tectonic plates. However, the lack of extensive and large-scale geodetic networks near such seismic events hinders our thorough understanding of the large-scale crustal deformation resulting from earthquakes. Using T & uuml;rkiye's extensive and continuous global navigation satellite system (GNSS) network during the moment magnitude 7.8 and 7.6 Kahramanmara & scedil; earthquakes on 6 February 2023, we show that large earthquakes can induce far-field crustal deformations (>700 kilometers), exceeding current predictions from elastic dislocation models. They can lead to the mobilization of tectonic plates and the triggering of far-field earthquakes, which carries profound implications for seismic hazard assessments and necessitates a new perspective on crustal deformation and earthquake mechanics.