high, breaking wave that advances up an estuary as the tide rises.
A tidal wave that propagates up a relatively shallow and sloping estuary or river in a solitary wave form. The leading edge presents an abrupt rise in level, frequently with continuous breaking and often immediately followed by several large undulations. An uncommon phenomenon, the tidal bore is usually associated with very large ranges in tide as well as wedge shaped and rapidly shoaling entrances. Also called eagre, eager (for Tsientan, China bore), mascaret (French), pororoca (Brazilian), and bore.
A visible wall of water that moves toward shore with the rising tide in quiet waters.
Generated in estuaries and rivers with high tidal range and a sharp narrowing and shoaling at the entrance. Manifested as a single wave, which may be breaking, that travels along the river or estuary and is followed by a rise in water level. See also bore.
A large wave or bore caused by constriction of spring tide as it enters a long narrow shallow inlet.
a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)
an ocean wave from a large body of water that bores its way up a relatively small river pushing water backward toward the land
a phenomenon in which the leading edge of the incoming tide forms a wave (or waves) that travel up tidal channels or rivers against the direction of the current
a steep-fronted wave caused by the meeting of two tides or by the constriction of a spring tide as it passes up an estuary
a wall or wave of water that moves upstream (especially in a river) at the onset of high tide
a wave that advances up a river mouth during extreme tide swings
A turbulent, abrupt, wall-like wave that is caused by a flood tide.
A tidal bore (or just bore, or eagre) is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travel up a river or narrow bay against the direction of the current. As such, it is a true tidal wave (not to be confused with a tsunami).