Definition

Noun: A tidal bore is a natural phenomenon where the leading edge of an incoming tide forms a single, often large, wave that travels up a river or narrow bay against the direction of the river's current. It is caused by the funneling effect of the estuary and the collision of tidal forces.

Usage and Examples

• Noun:
  • We went to the river to watch the famous tidal bore come in.
  • The strength of a tidal bore can make certain rivers dangerous for small boats.
  • The Qiantang River in China is known for having one of the world's largest tidal bores.

Advanced Usage

• "to surf a tidal bore": Refers to the activity of surfing on the wave of a tidal bore, which can travel for long distances.
  • Adventurous surfers travel to locations like the Severn River to surf the tidal bore.

Variants and Related Words

• Bore (n): A common shortened form for "tidal bore" in specific contexts (e.g., the Severn Bore).
• Eagre (n): An archaic or regional term for a tidal bore.
• Tidal wave (n): While sometimes confused, a "tidal wave" is generally a non-scientific term for a tsunami, not a tidal bore. A tidal bore is specifically a tidal phenomenon.

Synonyms

• Eagre
• Bore (in this specific context)

Related Phrases and Collocations

• Bore tide: Another term used, particularly in Alaska, for a tidal bore.
  • The Turnagain Arm bore tide attracts many spectators.
• Tidal surge: This more commonly refers to a general rise in sea level due to a storm or tide, not the single, distinct wave of a bore.

Noun

1. a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)