Sea Level

Sea Level

Mean sea level (MSL) is a measure of the average height of the ocean's surface (such as the halfway point between the mean high tide and the mean low tide); used as a standard in reckoning land elevation. MSL also plays an important role in aviation, where standard sea level pressure is used as the measurement datum of altitude at flight levels.

Read more about Sea Level:  Measurement, Difficulties in Utilization, Sea Level and Dry Land, Recent Changes, Aviation

Famous quotes containing the words sea and/or level:

    The sea has neither meaning nor pity.
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    It is the American vice, the democratic disease which expresses its tyranny by reducing everything unique to the level of the herd.
    Henry Miller (1891–1980)