What causes beach erosion?

Answer 1

1. Dredging Rivers takes away sand that would normally be carried downstream. 2. Putting in place jetties disrupts normal water flow and creates irregular sediment deposition. 3. Urbanization along coastal land causes beach erosion during development. 4. El Nino causes an increase in storm frequency and storm intensity. 5. Typhoons with raging winds carry away sand. 6. Hurricanes with pelting rain carry away a lot of sand, more than normal rains 7. Earthquakes misguiding the paths of Rivers causing the sand to be diverted elsewhere. 8. Storm Waters cause over-flowing of rivers then depositing the sand on the river bank rather than down at the coastal lands. 9. Rising sea levels eat away at the sand by creating alternate tidal patterns. 10. Subsidence of the coast due to over pumping of ground water causes the seas to extend further in land. 11. Chemical erosion deteriates coastal land utilizing salt water and oxygen to destroy rock material that comes in contact with sea water. 12. Tourism causes compaction of tidal sands and a further retreat of the beach allowing waves to get inland further. 13. Failed attempts at controlling beach erosion in the past can actually cause the problem to get worse; such as causing the waves to rush back out to see faster than before taking more sediment with them. 14. Deepening and widening of river channels cause deposition of sand in the channel rather than on coastal lands.

Answer 2

Global Warming can cause strong storms that can cause dunes collapsing or beaches being stripped of their sand. Buildings built to close to the shore can cause it as well, if they trap the sand on the beach and disrupt the natural flow of the tide.

Answer 3

Wind and water.

Answer 4

destruction to the surrounding land

Answer 5

Trash