Very-long-range dynamic triggering of mud volcano unrest and silent magnitude-6 fault slip

• 成果类型: Article
• 署名作者: Bayramov, Zaur; Viltres, Renier; Doubre, Cecile; Maggi, Alessia; Jolivet, Romain; Rivera, Luis
• 署名单位: Centre National de la Recherche Scientifique (CNRS); Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Ministry of Education of Azerbaijan Republic; Azerbaijan State University of Oil & Industry (ASUOI); Centre National de la Recherche Scientifique (CNRS); Universite PSL; CNRS - National Institute for Earth Sciences & Astronomy (INSU); Ecole Normale Superieure (ENS); Institut Universitaire de France
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adv8438
• 发表日期: 2025-09-04
• 页码: 996-1002
• 关键词: SATELLITE RADAR; FAR-FIELD; earthquake; deformation; transient; gps; constraints; dislocation; AZERBAIJAN; california

摘要

Seismic waves from large earthquakes are known to trigger slip on distant faults, but the underlying mechanisms remain unclear. Using interferometric synthetic aperture radar and local geodetic and seismic data, we show that the 1000-kilometer-distant, February 2023 Kahramanmara & scedil; earthquakes in southeastern T & uuml;rkiye triggered deformation and/or eruption at 56 mud volcanoes and centimeter-scale aseismic slip on seven faults over tens of kilometers within the fluid-rich Kura Basin in the West Caspian region. This transient deformation event, with an equivalent moment magnitude of 6.1, was coupled with local inflation below major hydrocarbon fields. We postulate that seismic waves led to a change in pore pressure at depth, which in turn triggered aseismic slip along several crustal faults crossing the basin and its surroundings.