An earthquake disaster—the casualties, damage, and destruction caused by an earthquake (including collapses, fires, tsunamis, etc.).
あの地域は大きな震災で多くの住宅が被害を受けた。
That area suffered heavy damage to many houses in the major earthquake disaster.
震災の復興には長い時間と多くの支援が必要だ。
Reconstruction after an earthquake disaster requires a long time and a lot of support.