In some places there is a huge difference between high and low tide. While there is almost no difference in the Mediterranean.
Answer
The gravitational pull of the moon (and to a lesser extent the sun) causes the tide. This force creates a tidal wave that causes a difference between low and high tides of barely 0.5 to 1 meter in large, deep oceans. Small tidal differences are therefore perfectly normal in many coastal towns in the world. The depth of the water or the surrounding relief of the coast have hardly any effect here, in contrast to straits or semi-closed seas where the tidal wave is pushed up to tidal ranges of up to 15-18 meters. In almost completely closed sea basins such as the Mediterranean Sea or the Baltic Sea, the tidal range is even smaller than on the world oceans, because they are so enclosed that the tidal wave barely gets in and out.
Answered by
dr. Nancy Fockedey
Marine, estuarine and coastal sciences in the broadest sense of the word.
Wandelaarkaai 7 8400 Ostend
http://www.vliz.be
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