Beach dune erosion Essay -- essays research papers

Vegetated horse sense ridges called dunes, built up by dry beach sand blown inland and trapped by plants and other obstructions, back closely beaches. As sand accumulates, the dunes become toweringer and wider.Plants play a lively role in this dish up, acting as a windbreak and trap the deposited sand particles. A characteristic of these plants is their ability to grow up by the sand and continually produce new stems and roots as more than sand is trapped and the dune grows.Stable sand dunes play an big part in protecting the coastline. They act as a break against wave damage during behaves, protecting the land behind from salt-water intrusion. This sand obstruction allows the development of more complex plant communities in areas protected from salt-water inundation, sea spray and strong winds. The dunes also act as a author of sand, to replenish and maintain the beach at times of erosion.Frontal sand dunes are vulnerable. The vegetation can be destroyed by inbred c auses such as storms, cyclones, droughts or fire, or by human hang-up such as pee-peeing, grazing, vehicles or excessive foot traffic. If the vegetation tag is damaged strong winds may cause blowouts or gaps in the dune ridge. Unless repaired, these increase in size, the whole dune system sometimes-migrating inland masking everything in its path. Meanwhile, with a diminished reservoir of sand, erosion of the beach may lead to coastal recession.To avoid this, protecting the vegetation is vital. The beach, between high-pitched and low tides, is hard-wearing but the sensitive dunes, which we cross to reach it, must be protected also. For this reason damaged and sensitive dunes might need to be fenced and access tracks for vehicles and people provided.Processes such as waves, near shoot down currents and tides continually modify shorelines. The ability of beaches to maintain themselves is achieved through these natural forces. The natural process of beach renourishment, sometimes called "dynamic equilibrium", is how the beach responds to stomach. When waves are high during storms or when hurricanes hit the shore, sand is carried from the beach and deposited on the naval floor. This makes the ocean bottom flatter and makes waves break further from shore and smaller. During subtle weather or erosion, smaller waves slowly shift the sand back to the shore and replenish the beach. When people build... ...ready spent almost $100 million to sweep sand from the ocean floor and dump it onto 33 miles of coastline. Ocean metropolis Beach was renourished in 1982 for five million dollars, but washed off in only two and a half months.When beach residents pick out something be done about the beach dune erosion, and all the coin the is spent on contemptible endeavors to stop mother nature, a storm or hurricane will come along and wipe out the development. wherefore billions of dollars are spent to rebuild coastline homes and resorts, which set up a repetiti on cycle of economic and environmental idiocracy. One day, in a let out society, we will save our beaches from development so that everyone is free to enrapture them in an unhampered, natural state. We will stop wasting billions of dollars in our futile attempts at man-made beach resurrection and pointless rebuilding of homes and resorts. It will become clear that the development of Americas coastline is too costly to maintain and is destroying our beaches. Until then we will skip to the tiny public designated beach access areas, fight for parking spaces and sunbathing positions, and enjoy one of our planets most beautiful assets while we can.