noun
distant earthquake; teleseism
Technical term used in seismology for an earthquake occurring far from the observation point, typically beyond 1000 km.
遠地地震の波形解析から、地球内部の構造が推定される。
The internal structure of the Earth is inferred from waveform analysis of distant earthquakes.
Compound of 遠地 (えんち, 'distant place') and 地震 (じしん, 'earthquake').