The flat area surrounding the river is called a floodplain. Why do you think it has this name?
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The flat area surrounding the river is called a floodplain. Why do you think it has this name?
The flat area surrounding the river is called a floodplain. Why do you think it has this name?
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Answer:
Causes of Flooding
From a geological perspective, floods are a natural consequence of stream flow in a continually changing environment. Floods have been occurring throughout Earth history, and are expected so long as the water cycle continues to run. Streams receive most of their water input from precipitation, and the amount of precipitation falling in any given drainage basin varies from day to day, year to year, and century to century.
The Role of Precipitation
Weather patterns determine the amount and location of rain and snowfall. Unfortunately the amount and time over which precipitation occurs is not constant for any given area. Overall, the water cycle is a balanced system. Water flowing into one part of the cycle (like streams) is balanced by water flowing back to the ocean. But sometimes the amount flowing in to one area is greater than the capacity of the system to hold it within natural confines. The result is a flood. Combinations of factors along with exceptional precipitation can also lead to flooding. For example, heavy snow melts, water saturated ground, unusually high tides, and drainage modifications when combined with heavy rain can lead to flooding.
Coastal Flooding
Areas along coastlines become subject to flooding as a result of tsunamis, hurricanes (cyclonic storms), and unusually high tides. In addition, long term processes like subsidence and rising sea level as a result of global warming can lead to the encroachment of the sea on to the land.
Explanation:
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