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Metres above sea level

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Metres above sea level

Metres above sea level is a standard metric measurement of the elevation of a location in reference to historic mean sea level; the determination of what actually constitutes mean sea level over time however, may be determined by other parameters, such as the effects of climate history and climate change, and may have differed in the past, as well as in the future, from that established by historic, modern, documented elevations.


Metres above sea level is the standard measurement of the elevation or altitude of:

How determined

The elevation/altitude in Metres above sea level of any location, object, or point, can be determined in a number of ways. The most common include:

Accurate measurement of historical mean sea level is complex. Land mass subsidence (as occurs naturally in some islands) can give the appearance of rising sea levels over time. Conversely, markings on land masses that are uplifted due to geological processes can suggest a lowering of mean sea level.

Other measurement systems

Feet above sea level is the most common analogue for metres above sea level in the American measurement system.


Metres above sea level is commonly abbreviated mamsl or MAMSL, based on the abbreviation AMSL from Above mean sea level. Metres above sea level is sometimes abbreviated as m.a.s.l.[1] or MASL.[2] .


  1. ^ Ricardo Bressani, Ricardo; Carlos Chon (1996). "Effects of altitude above sea level on the cooking time and nutritional value of common beans". Plant Foods for Human Nutrition (Formerly Qualitas Plantarum) 49 (1): 53–61.  
  2. ^ "Meters above Sea Level - What does MSL stand for? Acronyms and abbreviations by The Free Online Dictionary.". Retrieved 2007-05-06. 
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