走そう時じ表ひょう

noun

travel-time table

Technical term used in seismology and related fields to show the time it takes for seismic waves to travel to various distances.

• 地じ震しんの震しん源げん距きょ離りを求もとめるために走そう時じ表ひょうを使つかう。

  We use a travel-time table to determine the distance to the earthquake's hypocenter.