Sunday 27 December 2009

Artificial Causes of Coastal Erosion


Artificial causes of coastal erosion include:

a. Soil degradation
Soil degradation can occur due to ground water taking uncontrolled, or due to oil and other mineral materials.

b. Quarrying sand
One reason for coastal erosion is the excavation of sand and other minerals from coastal areas and beaches. Excavation will reduce the reserves of sand in the area that can be eroded coastline.

c. Coast parallel transport interruptions
This can happen because it perpendicular to the beach building. Perpendicular to the building can withstand transport rate of sediment transport from upstream, so the lack of sediment downstream, the result will occur in the upstream place accretion and erosion downstream.

d. Reduction of sediment supply to the beach
Supply blood circumstances beach sediment can occur due to human activities on land, such as the construction of dams and river regulation. Because of reduced sediment supply there will be transport beach material.

e. The centrality of wave energy on the beach
Making a building can lead to coastal wave energy concentration in the area, it can cause erosion.

f. The destruction of natural protection
In general, the beach has such a natural protective vegetation and a sand dune reserve. Destroying or the protective nature can result in coastal areas exposed to waves, so that these protected areas have no protection against the onslaught of the waves.

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