Tidal bores explained
Jan 24, 2020
4 minutes
Sometimes, when a powerful spring tide pours into a funnel-shaped estuary, something exceptional happens; a tidal bore appears, seemingly out of nowhere.
According to the International Hydrographic Dictionary, a bore is “a high breaking wave of water, rapidly advancing up an estuary”, and is the result of pressure in the estuary rising to a point where the flood literally ‘bursts’ and surges forward. For those lucky enough to witness this wonder of nature, you will notice two distinct stages. The first is a dramatic wave that appears a couple of hours before high tide, shattering the tranquillity. This is quickly followed by a rapid rise in the tide;
You’re reading a preview, subscribe to read more.
Start your free 30 days