遠えん地ち地じ震しん

noun

distant earthquake; teleseism

Technical term used in seismology for an earthquake occurring far from the observation point, typically beyond 1000 km.

• 遠えん地ち地じ震しんの波は形けい解かい析せきから、地ち球きゅう内ない部ぶの構こう造ぞうが推すい定ていされる。

  The internal structure of the Earth is inferred from waveform analysis of distant earthquakes.