震しん源げん域いき

noun

hypocentral region; seismic source region

Technical term in seismology referring to the area around the earthquake focus where rupture occurs.

• 震しん源げん域いきは地ち下か約やく10キロの深ふかさに位い置ちしている。

  The hypocentral region is located at a depth of about 10 kilometers underground.