The Success of Management Policies in Dealing with Coastal Erosion and Flooding
Roughly a quarter of the English coastline has been developed for
housing, industry or leisure purposes. At these sites coastal
management has been introduced to protect the coast from flooding and
coastal erosion. The particular area of coastline I studied in detail
is on the South-East coastline of England and includes various sites
along it. These include Camber sands, Dungeness and St Mary’s bay.
Authorities worked on a reactive basis, often ignoring natural
processes. They attempted to control the effects of erosion and
flooding, with little attention being paid to the implications of
individual schemes or other sections of the coastline. This often led
to the need for more protection works down-drift of original schemes,
increasing the costs of coastal defence. However attitudes to coastal
management have changed due to rising sea levels. Coastal managers now
work with the knowledge of sediment movement with defined cells.
In Romney marsh the area is flat and is a very marshy area which is
about 2-3m above sea level. The land is being used for pastoral and
arable farming. There is also a small number of houses there (small
villages) and a lot of drainage ditches surround the area and these
act as a protection as they hold the water and drain it back out. In
Romney marsh there is a lot of gravel extraction and a few other
materials have been extracted, however not much is being done to
protect the coastline at the moment. In Camber sands however it
transforms into a sand dune ecosystem where the beach acts as a
coastal defence and protects the surrounding area. This is because
when the wind blows it blows sand up the wide beach and this forms
sand dunes some of the highest dunes are 5m high. The land is used
mainly for the formation of sand dunes and it is a SSS’I (site of
special scientific interest). There are a few services around the area
which include pubs, bars, seasonal amusements and a golf course.
Investigation on Coastal Erosion In Porlock Bay Aims ---- Aim 1: To find out if beach material is moved across Porlock Bay by longshore drift. Aim 2: To find out which type of sea defense is best for Porlock bay. If L.S.D. (long shore drift) were taking place I would expect to find: a) Deposition at one end of the bay and against any abstractions such as groynes. b)
work because the weight of the water is on a long flap on the bottom
Dawlish warren is a major sand spit at the mouth of the River Exe, and
Investigating the Geographical Processes that are Affecting the Physical and Built Coastal Environment There are three geographical processes that are affecting the physical and built coastal environment, they are; erosion, deposition, and transportation. Erosion is the group of natural processes, including weathering, dissolution, abrasion, corrosion, and transportation, by which material is worn away from the earth’s surface, this is mainly caused by wind, running water, and waves breaking on the coast. Deposition is the depositing something or the laying down of matter by a natural process. Transportation is when sand is moved along the coast by long shore drift. At North Cronulla beach erosion is evident.
water is kept in by a rock ridge on the floor of the corrie called a
of sand and gravel deposits that lay on top of London clay and it is
This will prevent “water spots” to show up that can stain the fabric if not taken care.
Marshes - An area of soft, wet, low-lying land, characterized by grassy vegetation and o...
The water moves at a faster rate since there is nothing to absorb the water, which could cause flooding.
In Roman times St. Mary's Church was built with Twin Towers as part of the building. Originally the church was 3kms away from the sea but as the cliff was eroded it eventually became next to the see. There was a danger the cliff under the Twin Towers and therefore the Twin Towers themselves would be destroyed by erosion. To stop this happening many coastal defences and different types of management have been erected. The initial try at coastal management was in 1809.
Coastal erosion is a growing problem along the Gulf Coast. Louisiana is one of the coastal states most affected by coastal erosion. Ninety percent of wetland loss in the nation occurs in Louisiana, losing 25-35 square miles per year. At that rate, Louisiana will lose 640,000 more acres by 2050. Many factors contribute to this land loss, such as rising sea levels, subsidence, hurricane storm surge, cold fronts, and human interference. Cold fronts and hurricanes can both have detrimental consequences on the coast of Louisiana (Zhang 2004) (Restore or Retreat 2012). This research shows whether cold fronts or hurricanes have a larger effect on coastal erosion. The researcher will describe how historical and current satellite imagery help in determining the changes in the Louisiana coast. Based on previous research, the researcher believes that hurricanes have more of an effect on coastal erosion than cold fronts due to the high winds and storm surge.
This paper introduces the environmental concerns of the loss of coastal wetlands. The paper will discuss the significance of wetlands and the devastation that is occurring because of human activity. Wetlands are an essential element of our environment both ecological and societal; conservation will be essential for the preservation of these precious ecosystems.
Natural Processes are actions or events that have natural causes, which result in natural events. The three main coastal environment processes that operate at Muriwai are Coastal Erosion, Coastal Transportation and Coastal Deposition.
and the effect it will have on the coast before they are allowed to be