noun, noun or participle which takes 'suru', intransitive verb
vertical shaking; up-and-down tremor
Specifically refers to the vertical component of earthquake motion, often contrasted with 横揺れ (horizontal shaking).
See also: 横揺れ
大きな地震のとき、最初に縦揺れを感じた。
During the big earthquake, I first felt vertical shaking.
縦揺れは建物に大きなダメージを与えることがある。
Vertical shaking can sometimes cause severe damage to buildings.
noun, noun or participle which takes 'suru', intransitive verb
pitch; pitching motion
Used for the up-and-down motion of a ship, aircraft, or vehicle. The loanword ピッチング is also common in technical contexts.
See also: ピッチング
船が縦揺れして、船酔いする人が多かった。
The ship pitched, and many people got seasick.
飛行機が乱気流で縦揺れした。
The aircraft pitched due to turbulence.