13 Terms
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Physical geography
Industry: Geography
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Physical geography
Dynamic metamorphism
Geography; Physical geography
Form of metamorphism that causes only the structural alteration of rock through pressure. The minerals in the altered rocks do not change chemically. The extreme pressures associated with mountain ...
Dust dome
Geography; Physical geography
Dome of air that surrounds a city created from the urban heat island effect that traps pollutants like particulate matter.
Dry-bulb thermometer
Geography; Physical geography
Thermometer on a psychrometer used to determine current air temperature. This measurement and the reading from a wet-bulb thermometer are then used for the determination of relative humidity or dew ...
Dry line
Geography; Physical geography
A boundary the separates dry and moist air in the warm sector of a mid-latitude cyclone wave. Found ahead of the cold front.
Divergence
Geography; Physical geography
Horizontal outflow of wind from an area. In a surface divergence, outflow originates from the upper atmosphere.
Diurnal tide
Geography; Physical geography
Tides that have one high and one low water per tidal period.
Disturbance
Geography; Physical geography
(1) Partial or complete alteration of a community or an ecosystem by a biotic or abiotic factor. (2) Cyclonic low pressure system.
