Amphidromic point

An amphidromic point is a point of zero amplitude of one harmonic constituent of the tide. The tidal range (the peak-to-peak amplitude, or height difference between high tide and low tide) for that harmonic constituent increases with distance from this point. These points are sometimes called tidal nodes. The term amphidromic point derives from the Greek words amphi (around) and dromos (running), referring to the rotary tides running around them.

Amphidromic point

An amphidromic point is a point of zero amplitude of one harmonic constituent of the tide. The tidal range (the peak-to-peak amplitude, or height difference between high tide and low tide) for that harmonic constituent increases with distance from this point. These points are sometimes called tidal nodes. The term amphidromic point derives from the Greek words amphi (around) and dromos (running), referring to the rotary tides running around them.