上じょう下げ動どう

noun

vertical motion; up-and-down movement

Primarily used in seismology and engineering for the vertical component of ground shaking during earthquakes. Also applicable to any vertical oscillation or reciprocating motion.

• 地じ震しんの上じょう下げ動どうは建たて物ものに大おおきな被ひ害がいを与あたえることがある。

  The vertical motion of an earthquake can cause significant damage to buildings.

• この装そう置ちは上じょう下げ動どうを測そく定ていするセンサーを備そなえている。

  This device is equipped with a sensor that measures vertical movement.