走そう時じ曲きょく線せん

noun

travel-time curve

Technical term in seismology and geophysics: a graph showing the relationship between the arrival time of seismic waves and the distance from the epicenter.

• 地じ震しんの震しん源げん距きょ離りは走そう時じ曲きょく線せんから求もとめられる。

  The distance to the earthquake's hypocenter can be determined from the travel-time curve.