At Point Peron, there are many coastal processes, which affect the environment by constructing and destructing different coastal elements. These coastal processes include long shore drift, deposition, weathering and erosion. Each of these processes affects the environment differently.
- Destructive waves are powerful and forceful. They destruct/break down the coast. Destructive waves can create both spectacular and catastrophic consequences such as naturally formed arches, stacks, stumps, wave cut notches and even the creating of bays.
- Constructive waves on the other hand build up the coast by adding sand to beaches. This occurs when the swash, the movement of water up a beach when a wave breaks, is more powerful than the backwash, the movement of water back down the beach to the sea. The photo left shows the result of the swash being stronger than the backwash. Constructive waves are typically not as rough as destructive waves.
- Longshore drift (LSD) is the moving of sand down a beach. It drastically changes the appearance of the coast. This is because tones of sand fro...
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)
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.
Case Study of Hastings Coastal Management Hastings is a town on the south coast of England approximately 60 miles south of London (see map below). In recent years, the coastline at Hastings has had to face many large scale problems, including the 10 km stretch from Hastings eastwards to the small town of Fairlight. With the coastline at constant exposure to the English Channel, there are many coastal processes which take place along the stretch of beach and cliff. [IMAGE][IMAGE] [IMAGE][IMAGE] Longshore Drift [IMAGE] Fetch [IMAGE]The map on the left illustrates the location of Hastings and also the area of the coastline which is being discussed in this case study.
wave to form, the surging tide must meet an obstacle. When the ocean meets the
There are many different types of coasts that exist throughout the United States. The south shore of Long Island has a unique types of coast known as a barrier beach. Barrier beaches are long narrow land forms that are composed of sand and other lose sediments. These sediments are brought together by the actions of waves, currents and storm surges. Barrier beaches are subject to constant changes by the same forces. Sand is constantly eroded in one area an deposited in another. Barrier coasts are important for a number of reasons; they protect the mainland of Long Island from the open ocean and flooding during storms, for recreational use and the unique ecosystems which exist on barrier beaches.
... consider some ideas of what can be done to further enhance the management of the coastal issue. Using the research action plan, I aim to acquire a sophisticated understanding of longshore drift, coastal management and implementations of coastal issues, through the research action plan. Most importantly, I will include various diagrams explaining how the process of longshore drift occurs and what implementations it has on coastal environments, accompanied by an explanation of how the issue is being managed, a detailed outline of the geographical processes involved and a discussion of the impacts of the issue and why it is important.
They are very dangerous. Tsunamis and rogue waves are have more difference than similar. Tsunamis last longer than rogue waves do, rogue waves last until it hits something, tsunamis on the other hand last for an hour or more. They formed in different parts of the ocean, like Indian Ocean is where tsunamis form and Atlantic Ocean where rogue waves form.
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.
When two currents flow towards each other on show it pushes the flow of the current outward which causes a rip current. Rip current can be dangerous but it is an easy way for surfers to get out in the sea and catch the wave.
The Sun’s radiation heats the upper atmosphere, sending the energy toward the earth’s surface and finally mixes with the planet’s counter-rotational currents, creating jetstream flows. The winds flow over the ocean’s surface creating friction that spawns chops, pushing up the seas forming perfect bands of open ocean swell. Pushed on by gravitational forces, the swells speed away from the winds that they came from, moving across the deeps until they feel the drag of the shallows near the coast. As the swells rise up out of themselves, they peak, curling into the liquid dreams that we surfers ride (Kampton 4).
Semaphore Beach is affected by many factors such as natural processes and human impacts including marine litter and the discharge of stormwater. Therefore, several plans have been employed to ensure that the coast is supported through the method of counteracting erosion. However in the future, many management strategies have been put into consideration as well as the environmental, economic and social impacts as well as the predicted consequences. These impacts include traffic related incidents, noises and air pollution and the disruption of wildlife and the erosion of dunes. A method that should be considered for future management of the beach is the use of a concave sea wall, although efficient, this structure would be quite costly. Without the use of coastal management, Semaphore Beach would be unsupported, therefore negatively being affected by a variety of
By the second half of the nineteenth century, many people rushed to California including Anglo. It can be said that California was entering an era of “Anglo hegemony”. In this paper, I intend to discuss the reason why they traveled to California, their encounters, their remarkable success as well as the role of sex and gender in helping these newcomers assume control of California.
A hurricane is easily the most powerful storm that mother-nature can throw at us. Every year people who live on the coasts fight hurricanes with no dismay. A hurricane is simply too strong. Their winds reach speeds of 75 mph. The winds around the eye wall can reach 130 to 150 mph. They are 200 to 300 miles in diameter. The number of casualties is endless, as well as the widespread destruction that takes millions of dollars to repair. Even if the hurricane doesn’t cause a lot of damage, the storm surge will. Storm surge is the great tidal waves that crash into our coasts and make huge floods that are caused by hurricanes.
Katrina, Charley, Nina, Sandy and Yasi these are some names that will leave the hearts and minds of those devastated by Mother Nature’s sheer power of destruction. According to Lakshmi Kantha, “Hurricanes, more appropriately tropical cyclones, have the potential to be highly destructive to coastal structures, habitats and communities” [1].
The problem with contaminated beaches will soon take effect on everyone. The main causes that pollution creates in the beaches are from heavy rainfall, natural disasters, and plant malfunctions. Government agencies cannot control the weather, but they can control what goes into the water. In the United States, the number one reason why beaches are closed down are due to contamination in the water that may be harmful and are left untreated. The arising problem with the beach is that the industries are producing toxic chemicals and tossing the unwanted waste into the ocean. Also, the public are recklessly throwing their trash out into the streets. A prime example to demonstrate this is, if someone was trying to throw a bottle into a street trashcan but missed, he/she is unlikely to pick up after himself/herself if no one was around to see it. This scenario causes pollution to the sidewalks. When mother nature disasters occur, these waste products will end up in the storm drains and into the sewage system. The overflow of debri from the cities can flow into the rivers and if not preserved, it can flow into the ocean. The rivers will then carry these human caused waste into t...