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. It is being managed by the
local council in two different ways. These include; a rip-rap wall,
dune stabilization. The rip-rap wall consists of large rocks which
have been piled up at an angle. Behind the rip-rap wall the land use
is mainly commercial, but there is also some residential land-use.
This method has been used because human land-use is right on top of
the ocean, and in order to defend these buildings a hard option is
required. There are many things working together to ensure Dune
stabilization. These include; re-vegetation, fences, poly-mesh
fencing, planked walkways, and controlled pedestrian access. This
method is a softer option than the rip-rap wall and is used because
human land-use, which at this place consists mainly of recreational
buildings, is far away from the ocean. Deposition is also being
managed at North Cronulla beach. Dune stabilization is being used to
prevent deposited material from being eroded away.
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)
This shows that it is eroded at one end more which is a sign of long
The whole island is in the shape of a giant square with white sandy beaches full of people sunbathing, swimming and fishing right on the shoreline. From the end of the hot pavement parking lot to shore of the beach is an ocean of soft white sand. The pearlescent white sand seems to know how to invade every nook and cranny almost as if it enjoys it. Walking around the beach on the fluffy whiteness surrounding the parking lot, the seagulls are fighting over scraps of food on the ground. “Sandy beach ecosystems provide invaluable services to humankind. Their functions have been exploited through history, with significant anthropogenic effects (Lucrezi, 2015)”. This white sandy beach is a beautiful refuge from the mundane grind of everyday life. The smell of the misty ocean air mixed with the sound of seagulls hovering above and kids playing is a tonic for the mind. The feel of the sand between their toes and the waves crashing over them as people swim in the water, or the jerk of a fishing pole when someone is catching a fish makes Fred Howard Park one of the best places to relax. Standing on the beach looking out on the water, people are kayaking and windsurfing. The lifeguards watching vigilantly in their bright red shirt and shorts, blowing their whistles when they see someone being unsafe. After a long day of swimming and laying around visitors head back over the soft white sand to the showers, in order to rinse off the menacing sand that clings to everything like a bad habit. Everyone rushes over the hot pavement burning their feet to reach their cars so they can put away their beach paraphernalia which is still covered in the white sand, nearly impossible to completely leave behind, so when they get home it serves as a reminder of where they were that
is being eroded by the sea so that cliffs, up to 20 metres high rise
Longshore drift influences the deposition and erosion of sediments. Waves erode the coast and transport the eroded material along the coastline. Over a period of time, the material will be deposited on a beach or form a larger feature such as a spit. Groynes are structures built at equal intervals along the coastline. Their purpose is to restrict longshore drift, preventing coastal erosion.
hard rock is eroded, it can cause an island of hard rock left of the
coastal area it is also subject to erosion by the sea so we will be
While watching this video, I kept saying to myself “something needs to be done.” Not only is the price of seafood going to increase, but people are being put out of jobs. The Crabber mentioned how much change he has noticed in a span of over 30 years. I wonder what could happen in another 30 years if regulations are not put in place to help the bays rebirth.
Over the past 100 years the Louisiana coastline has suffered greatly from biotic, abiotic, and anthropogenic factors. The abiotic factors include things such as hurricanes or overnutrition that influence the surrounding biota. The biotic factors that contribute to coastal erosion are things like the immigration invasive species and the emigration or extinction of local flora and fauna that help preserve the wetlands. Additionally, there are anthropogenic factors such as pollution that can have strong negative influences on the abiotic and biotic factors of the wetlands. Each one of these factors cause ecological disturbances to the wetlands at a frequency and intensity that is unmanageable for the local flora and fauna. There are currently certain measures that are being taken into consideration to slow or stop the erosion of the Louisiana coastline.
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.
The Chesapeake Bay region is highly effected by climate change. This region is close to the water which makes it an easy target for flooding because of sea-level rise but the land is also sinking because of aquafer depletion. The Chesapeake Bay Foundation has been organized to protect and save the Chesapeake Bay and the areas that surround it. The American Farm Bureau Federation is somewhat opposed to the bay. In 2016, The Supreme Court denied the American Farm Bureau Federation to try and stop the federal state partnerships that clean up the Chesapeake Bay (Chesapeake Bay Foundation). The American Farm Bureau Federation and partners were trying to challenge the legality of the Chesapeake Bay clean-up plan that is also known as the Chesapeake
Many factors and geographical processes, the foreshore of Sydney Harbour has constantly faced changes in land use which has effected the environment, social communities and the economy in both positive and negative ways. Urban decay, urban renewal, urban consolidation and gentrification are the geographical process that are involved in the changing gland use around the Sydney Harbour foreshore. These geographical processes are what changes the land use from being used as industrial, residential and commercial which then impacts the economy, social communities/ public, the environment and the stakeholders.
Coastal Erosion, Coastal Transportation and Coastal Deposition are natural processes that have occurred at Muriwai's coastal geographic environment. These processes outlined have formed such phenomena as Motutara Island (stack), Otakamiro Point (headland/cliff), Fisherman's Rock (shore-platform), cave and the blowhole.
and the effect it will have on the coast before they are allowed to be
People from all over the world go to beautiful beaches that are filled with water as clear as ice or as beautiful as diamonds. But, what will happen if we do not conserve the appealing sites that draw attraction to the public? Contaminated beaches has become a controversial issue to the public because of the causal problem, the harm to the people and marine animals, the government agencies supporting or opposing pollution, and the industries involved in creating such unlawful decisions. To create and find a solution, we must first find the core to the problem.