seismic 
adjective uk/ˈsaɪz.mɪk/ us/ˈsaɪz.mɪk/
    [ before noun ] geology specialized地震的;地震引起的 relating to or caused by an earthquake
    seismic activity/waves 地震活动/地震波 
      造成严重破坏的having very great and usually damaging effects
    The news that the chairman would resign set off seismic waves in the business community. 主席要辞职的消息在商界引发了剧烈震动。 
     Related word: seismically