深しん発ぱつ地じ震しん

noun

deep earthquake; deep-focus earthquake

Technical term in seismology for an earthquake whose focus is deeper than about 100 km. Often contrasted with 浅発地震 (shallow earthquake).

See also: 浅発地震

• 深発しんぱつ地じ震しんは震しん源げんが深ふかいため、広ひろい範はん囲いで揺ゆれが観かん測そくされることがある。

  Because deep-focus earthquakes have a deep hypocenter, shaking can sometimes be observed over a wide area.