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28 relations: Aerial photography, Airplane, Altimeter, Altitude, Atmospheric pressure, Building, Climate change, Elevation, Foot (unit), Geographic coordinate system, Global Positioning System, Height above average terrain, Height above ground level, Helicopter, Landmark, List of places on land with elevations below sea level, Measurement, Metre, Metres above sea level, Metric system, Mountain, Non-SI units mentioned in the SI, Nonbuilding structure, Satellite, Sea level, Surveying, Town, Vertical metre.
Aerial photography
Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other flying object.
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Airplane
An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller or rocket engine.
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Altimeter
An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level.
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Altitude
Altitude or height (sometimes known as depth) is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, atmospheric pressure, and many more).
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Atmospheric pressure
Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet).
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Building
A building, or edifice, is a structure with a roof and walls standing more or less permanently in one place, such as a house or factory.
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Climate change
Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years).
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Elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum).
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Foot (unit)
The foot (feet; abbreviation: ft; symbol: ′, the prime symbol) is a unit of length in the imperial and US customary systems of measurement.
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Geographic coordinate system
A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols.
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Global Positioning System
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force.
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Height above average terrain
Height above average terrain (HAAT) (or less popularly, EHAAT, Effective Height Above Average Terrain) is a measure of how high an antenna site is above the surrounding landscape.
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Height above ground level
In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL) is a height measured with respect to the underlying ground surface.
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Helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors.
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Landmark
A landmark is a recognizable natural or artificial feature used for navigation, a feature that stands out from its near environment and is often visible from long distances.
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List of places on land with elevations below sea level
This is a list of places below mean sea level that are on land.
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Measurement
Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events.
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Metre
The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).
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Metres above sea level
Metres above mean sea level (MAMSL) or simply metres above sea level (MASL or m a.s.l.) is a standard metric measurement in metres of the elevation or altitude of a location in reference to a historic mean sea level.
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Metric system
The metric system is an internationally adopted decimal system of measurement.
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Mountain
A mountain is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak.
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Non-SI units mentioned in the SI
This is a list of units that are not defined as part of the International System of Units (SI), but are otherwise mentioned in the SI, because either the General Conference on Weights and Measures (CGPM) accepts their use as being multiples or submultiples of SI-units, they have important contemporary application worldwide, or are otherwise commonly encountered worldwide.
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Nonbuilding structure
A nonbuilding structure, also referred to simply as a structure, refers to any body or system of connected parts used to support a load that was not designed for continuous human occupancy.
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Satellite
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.
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Sea level
Mean sea level (MSL) (often shortened to sea level) is an average level of the surface of one or more of Earth's oceans from which heights such as elevations may be measured.
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Surveying
Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional positions of points and the distances and angles between them.
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Town
A town is a human settlement.
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Vertical metre
A vertical metre is the metric unit used to measure the difference in height between two points on the terrain.
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Redirects here:
AMSL, Above Mean Sea Level, Above mean sea level, Above mean sea-level, Above median sea level, Above sea level, Above sea-level, Altitude above mean sea level, Altitude above sea level, Amsl, Feet above sea level, Height above mean sea level, Height above sea level, M. a. s. l., M.a.s.l., MAMSL, Meters above sea level, Metres above mean sea level.
References
[1] https://en.wikipedia.org/wiki/Metres_above_sea_level
