In addition to the most common forms of natural disasters, there are other types of disasters which may benefit from satellite observations.

Maze

A maze is a path or collection of paths, typically from an entrance to a goal. The word is used to refer both to branching tour puzzles through which the solver must find a route, and to simpler non-branching patterns that lead unambiguously through a convoluted layout to a goal. The pathways and walls in a maze are typically fixed, but puzzles in which the walls and paths can change during the game are also categorised as mazes or tour puzzles.


Fig. Maze in northern China on February 21, 2019 by FY-3D.


Fig. Maze in northern China on February 21, 2019 by FY-4A.

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Fog

Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. Fog can be considered a type of low-lying cloud, usually resembling stratus, and is heavily influenced by nearby bodies of water, topography, and wind conditions.


Fig. Fog in eastern China on March 19, 2019 by FY-4A.


Fig. Fog in eastern China on March 19, 2019 by FY-4A.


Fig. Fog in eastern China on March 19, 2019 by FY-4A.

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Heat wave

A heat wave is a period of excessively hot weather, which may be accompanied by high humidity, especially in oceanic climate countries. While definitions vary, a heat wave is usually measured relative to the usual weather in the area and relative to normal temperatures for the season.


Fig. Heat wave in Australia on January 24, 2019 by FY-4A.


Fig. Land surface temperature on January 19, 2019 (5 days before the heat wave in Australia) by FY-4A.

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