7. Hydrological Processes Flashcards
Hydrology is
the scientific study of water
Water is important in geography for ?
human activities
very important agent in shaping the landscape in many environments
in some caribbean countries water may either be
designated water scarce while others experience a surplus
example of Caribbean countries that have complex surface drainage systems (3)
- Guyana,
- Jamaica
- Trinidad and Tobago
example of Caribbean countries that have underground drainage systems
Barbados
The hydrological cycle is
a model which describes the movement of water through the atmosphere, c1yosphcre, hydrosphere and the earth’s surface. It is a closed system in which water circulates continuously without gains or losses.
The amount of water is fixed
Diagram of the hydrological cycle
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in The hydrological cycle, the amount of water is
fixed
The hydrological cycle is a closed system because
water circulates continuously without gains or losses. The amount of water is fixed
the different states of water in the hydrological cycle
Water is found in different states throughout the cycle.
Water evaporates from the oceans and water bodies to form water vapour (invisible gas).
Water vapour condenses to produce water droplets (clouds, rain).
Water droplets may freeze to produce ice (snow, hail)
where is water mainly stored?
Water is stored mainly in the oceans and seas, as well as ice sheets and glaciers
what accounts for a small proportion of the total water storage?
Surface and underground water (ground water) storage
These are the reservoirs
Table 7.1 Volume and residence time of major reservoirs
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what is the largest and smallest reservoir
Oceans are by far the largest and the biosphere the smallest reservoir
The residence time is
the average length of time that a water molecule spends in a reservoir before visits to others.
For example, the water in lakes is renewed approximately once in every 50 to 100 years.
Some deep aquifers contain fossil water
