Pronunciation: [tˈa͡ɪdə͡l bˈɔː] (IPA) 
Tidal bore is a natural phenomenon that occurs in some rivers around the world. The spelling of this word follows the rules of English phonetics. The stress is on the first syllable, pronounced as "TAI-d'l bawr". The "i" in the first syllable, which represents the sound /aɪ/ or the "long I", is followed by a "d" and a reduced "l" sound. The "o" in "bore" is pronounced as a schwa, /ə/, rather than with the vowel /ɔː/.
A tidal bore refers to a fascinating natural phenomenon occurring in certain rivers, estuaries, and bays where there is a significant tidal range. It is characterized by the sudden arrival of a powerful wave or series of waves moving upstream against the current. Tidal bores generally take place when the incoming tide merges with the river's outflow, creating a continuous wave that travels upstream.
This extraordinary event is typically caused by the shape and narrowness of the river or estuary's mouth, which leads to a compression and increase in the tidal range. As the high tide advances, a wave begins to form and intensify as the volume of water forces its way upstream, generating a noticeable surge. Tidal bores vary in size, height, and speed depending on various factors such as the local topography and hydrological conditions.
The visual spectacle of a tidal bore is often accompanied by a distinct roaring or rumbling sound as the powerful wave crashes upstream, transforming the tranquil river or estuary into a dynamic and turbulent waterway. Tidal bores can be a significant attraction for both tourists and adventurous surfers who seek the thrill of riding the powerful waves.
Understanding the occurrence and behavior of tidal bores remains an intriguing field in the realm of fluid dynamics and the study of tidal phenomena. Through careful observation and scientific investigation, experts continue to deepen their knowledge of the factors influencing the formation and characteristics of these awe-inspiring natural events.
The word "tidal bore" is derived from the combination of the words "tidal" and "bore".
The term "tidal" originates from the Middle English word "tide", itself derived from the Old English word "tid" or "tidan". This Old English term referred to the regular rise and fall of the sea caused by the gravitational pull of the Moon and Sun.
The word "bore" comes from the Old Norse term "bára", meaning "wave" or "swell". It later evolved into the Middle English word "bore", referring to a large, powerful wave.
When combined, "tidal bore" refers to a unique phenomenon where a wave is created in a narrow bay, river, or estuary due to the incoming tide. The word captures the connection between the rising tide and the powerful wave it generates.
