SEA LEVEL


Meaning of SEA LEVEL in English

Position of the air-sea boundary, to which all terrestrial elevations and submarine depths are referred.

The sea level at any location changes constantly with changes in tides, atmospheric pressure, and wind conditions. Longer-term changes are influenced by changes in the Earth's climates. Consequently, the level is better defined as mean sea level, the height of the sea surface averaged over all stages of the tide over a long period of time.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.