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terrain
Definição1
The surface of the Earth containing naturally occurring features such as mountains, hills, ridges, valleys, bodies of water, permanent ice and snow, excluding obstacles.
Fonte1
INTERNATIONAL CIVIL AVIATION ORGANIZATION. International civil aviation vocabulary. 3rd ed. Montreal, 2007. (Doc. 9713)
Nota adicional1
In practical terms depending on the method of data collection, terrain represents the continuous surface that exists between the bare Earth and the top of the canopy (or something in between also known as "first reflective surface").
Nota adicional2
Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
Subárea1
Aeronautical Cartography
Português
terreno