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There is a point in Cornwall, in the UK, where there is a hatch in a building and underneath is a mark from which mean sea level for the entire world is calculated. It is in Newlyn, I think.
Answer
MSL is the average between high and low tides, and is a datum point used to desribe the height of tides, although the actual measurement is quite complex. The Newlyn mentioned above is the datum point for the UK, not the world. Other countries have their own datum point.
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∙ 15y ago
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What is the level of the ocean's surface called?
Yes, mean sea level (MSL) is the average (mean) height of the sea.
Why is sea level used to measure the height of a place?
The height of a landform on Earth is DEFINED as its height above sea level since sea level is the closest thing on Earth to a constant or standard starting point. Sea level itself changes with the tides and wind and weather, so we use what is called "mean sea level" which is an average of measured levels at a given place over an extended time.
How do you calculate sea level?
Mean sea level is the average (mean) height of the sea. http://en.wikipedia.org/wiki/Sea_level
What is the air pressure at sea level called?
Sea level pressure, sometimes as mean sea level pressure.
What is the sea level for New Mexico?
Mean sea level is 5,692 feet.
Mean sea level of delhi?
1043 ft above sea level
What is the difference between sea level and elevation?
Sea level ~ average (mean) height of the sea, with a reference to a suitable reference point. Elevation ~ height of a geographic location above mean sea level.
How high is sea level?
Well, sea level is the standard by wich other things are measured, so zero is the answer. Sea level is sea level. Compared to what?
What is the reference point for altitude?
Mean sea level (MSL) which is the average level of the sea. Determinig "sea level" is a very complex measurement. All other altitude measurements in aviation, in one way or another, are referenced from the mean sea level.
What is the altitude reference point for aviation?
Mean sea level (MSL) which is the average level of the sea. Determinig "sea level" is a very complex measurement. All other altitude measurements in aviation, in one way or another, are referenced from the mean sea level.
Which term is defined as the atomospheric pressure at sea level at zero degress celsius?
Absolute zero
What is Juneau's elevation?
Its 56 feet above sea level.
