foreshock

foreshock — 名詞

1. A small earthquake that happens before a larger, more powerful one, often servin

1.名詞C1
釋義

前震

大地震前發生的較小地震

A small earthquake that happens before a larger, more powerful one, often serving as an early sign of the bigger quake to come.

例句

A foreshock shook the town early in the morning, hours before the major earthquake struck.

一場前震在清晨搖晃了這座小鎮，數小時後主震才來襲。

temporal sequence: foreshock → major earthquake

The foreshock woke Harper at dawn, but the main earthquake an hour later caused far more damage.

前震在清晨五點把 Harper 搖醒，但一小時後發生的更強地震造成了更大的損害。

contrast: minor foreshock vs stronger main quake

同義詞
  • tremor

    more general term for any slight shaking of the ground, not necessarily before a larger quake

  • precursor earthquake

    more technical, emphasises the predictive aspect; less common in news reports

  • pre-shock

    informal abbreviation sometimes used in headlines or casual speech

反義詞
  • aftershock

    a smaller earthquake that happens after, not before, the main quake

用法筆記

Primarily used in seismology and news reports about earthquakes, rather than in everyday conversation, where 'small earthquake' or 'tremor' is more common.

常見錯誤

❌We felt a foreshock after the earthquake.
✅We felt a foreshock before the main earthquake.
💡A foreshock happens before the main quake, not after.