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What is height above mean sea level?
What is above mean sea level (AMSL)?
Why is sea level called 'average'?
What is the difference between sea level and mean sea level?
Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.
- Sea level - Wikipedia
The term above sea level generally refers to above mean sea...
- Above mean sea level - Simple English Wikipedia, the free ...
The term above mean sea level (AMSL) is the elevation or...
- Sea level - Simple English Wikipedia, the free encyclopedia
Sea level is generally used to refer to mean sea level...
- Sea level - Wikipedia
Geocentric orbits ranging in altitude from 160 km (100 mi) to 2,000 km (1,200 mi) above mean sea level. At 160 km, one revolution takes approximately 90 minutes, and the circular orbital speed is 8 km/s (26,000 ft/s).
During the glacial-interglacial cycles over the past few million years, the mean sea level has varied by somewhat more than a hundred metres. This is primarily due to the growth and decay of ice sheets (mostly in the northern hemisphere) with water evaporated from the sea.
Jul 8, 2019 · During the biggest Pleistocene glaciations about 20,000 years ago, mean sea level was about 400 feet (120 meters) lower than mean sea level today. If all of the Earth's ice sheets and glaciers were to melt, sea level could be up to 265 feet (80 meters) above current mean sea level.
