Seismicity modulation by external stress perturbations in plate boundary *** plate interior
Seismicity modulation by external stress perturbations in plate boundary vs. stable plate interior作者机构:Department of Earth and Atmospheric SciencesNIT RourkelaRourkela 769008India Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Remote Sensing and Geomatics EngineeringNanjing University of Information Science and TechnologyNanjing 210044China
出 版 物:《Geoscience Frontiers》 (地学前缘(英文版))
年 卷 期:2022年第13卷第3期
页 面:53-67页
核心收录:
学科分类:070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学]
基 金:supported by the NITR research fellowship financially supported by the Ministry of Earth Sciences (Seismology Division), Govt. of India, through grant number (MoES/P.O(Seismo)/1(349)/2018) to Bhaskar Kundu
主 题:Seismicity modulation Resonance destabilization Plate boundary Stable plate interior
摘 要:Characterization of critically stressed seismogenic fault systems in diverse tectonic settings can be used to explore the stress/frictional condition of faults,along with its sensitivity for seismicity modulation by periodic stress ***,the process of seismicity modulation in response to external stress perturbation remains *** this paper,the characteristic difference in the seismicity modulation due to resonance destabilization phenomenon governed by rate-and-state friction is presented and val-idated with the globally reported cases of seismicity modulation in diverse tectonic *** rela-tively faster-moving plate boundary regions are equally susceptible for both shorter-period(e.g.,semi-diurnal,diurnal,and other small tidal constituents)and long-period(e.g.,semi-annual,annual,pole tide and pole wobble)seismicity modulation processes in response to stress perturbations from natural har-monic forcing,including tidal,semi-annual,annual,or multi-annual time *** contrast,slowly deforming stable plate interior regions and diffuse deformation zones appear to be more sensitive for long-period seismicity modulation of semi-annual,annual,or even multi-annual time scales but less sen-sitive for short-period seismicity *** finding is also supported by the theoretical model pre-dictions from the resonance destabilization process and worldwide documented natural observations of seismicity modulation in diverse types of tectonic settings.