1 Uses 2 How it is determined 3 Other measurement systems 4 Abbreviations 5 See also 6 References
Geographic locations such as towns, mountains and other landmarks. The top of buildings and other structures. Flying objects such as airplanes or helicopters.
How it is determined The elevation or altitude in metres above sea level of a location, object, or point can be determined in a number of ways. The most common include:
Global Positioning System
Accurate measurement of historical mean sea levels is complex. Land
mass subsidence (as occurs naturally in some islands) can give the
appearance of rising sea levels. 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.
^ Ricardo Bressani, Ricardo; Carlos Chon (1996). "Effects of altitude above sea level on the cooking time and nutritional value of common beans" (PDF). Plant Foods for Human Nutrition (Formerly Qualitas Plantarum). 49 (1): 53–61. doi:10.1007/BF01092522. Retrieved 2007-05-06. ^ "Meters above Sea Level - What does MSL stand for? Acronyms and abbreviations by The Free Online Dictionary". Retrieved