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Effects of beach erosion
Beach erosion and its effects
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Hurricanes have been an important trigger to accelerate erosion in the area. From 1970, at least 7 hurricanes have hit the coast, weakening it and making its beaches prone to erode. Nonetheless, tourism as it was explained has been the main factor of the fast pace of erosion seen in the area. Currently Cancun has about 30 000 hotel rooms and a steady growing number of high-rise condominiums (SEDETUR, 2014). Prior to the development, beaches were able to recover themselves up to a certain point due to the presence of sand dunes and other factors such as the vegetation and the natural breaching that existed in the area. The result of human activities such as the construction of hotels on top of dunes, affect natural regeneration processes; the
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.
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
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
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.
Authorities at LSU's Hurricane Center and Water Resources Research Institute, and US Army Corps of Engineers lead a discussion of how Louisiana's coastal region is doomed to storm surges. A case in point is the deterioration of the Mississippi Delta, a triangular-shaped deposition of sediment, which works to mitigate flooding and damage caused by storm surges. In fact, every four miles of the delta could knock down a storm surge by one foot. Unfortunately, some areas of the delta like Port Fouchon are losing 40 to 50 feet of land per year. By 2090, experts at LSU have postulated that the delta will be gone - vulnerably leaving New Orleans on the sea. Aside from the delta, barrier islands and marshes are the only other two natural entities which could mitigate a storm surge. The barrier islands' black mangrove trees and the marshes' tall grasses interfere with incoming gulf currents. However, just like the Mississippi Delta, these natural entities are also eroding (Fischetti, 2001).
Only 26 miles long and not even 1 mile wide, Topsail Island offers a unique environment blending the Atlantic Ocean and the Intercostal Waterway. Although mostly peaceful and scenic, the vast beach that stretches the entire length of the island and the plethora of colorful summer homes that crowd the limited space are prone to obliteration. Extremely susceptible to hurricanes, Topsail survives off federal aid to rebuild and redevelop. There are more tourist traps and junk store littered about the island than grocery stores due to FEMA and the Federal government pouring millions of dollars into the salvaging the barrier island, attempting to rebuild the beaches and consequently boosting the economy and tourism. Though known to be a sinkhole for federal subsidies, the island sponsors numerous environmental projects protecting local wildlife and promoting sustainability. Following frequent destruction from hurricanes over the past two decades, Topsail Island has responded in an ironic manner by both rebuilding and developing while also expanding its growing concern with environmental protection.
Increased sea levels can give way to a variety of problems: rapid coastal erosion, shoreline change, loss of natural protective barriers, saltwater intrusion into aquifers and surface water, changes in tidal prisms (volume of water in an inlet between high tide and low tide), and rising water tables ("Climate Change and Impacts of Sea Level Rise"). Ventura County is facing many issues with rapid coastal erosion and loss of natural protective barriers. Beach Erosion Authority for Clean Oceans and Nourishment (BEACON) conducted a study to evaluate the conditions of different beaches along the Ventura County coast (Barlow, "Coastal Erosion Problems Highlighted in New Study"). Port Hueneme’s western beaches (picture to the left) are losing three to five inches per month due to sea level rise pushing beaches farther back.
Surfers, swimmers and sunbathers use beaches for recreation. People fish off beaches for food. Since many people take their vacations at the beach, lots of beaches in tropical locations are important to their country’s economy. Entire cities, regions and countries depend on the money tourists spend while visiting the beach. Beaches are naturally very dynamic places, but people try to control them and build permanent structures, such as houses, restaurants, shops and hotels, on or near the shore. The natural erosion and deposition of beaches becomes a problem. Beaches con disappear over time, or even over night during severe storms. Beaches are areas of loose sediment (sand, gravel, cobbles) controlled by ocean processes. Most beaches have several characteristic features. First are offshore bars, which help protect beaches from erosion. Next is the foreshore, which rises from the water toward the crest of the next feature; a berm. On low-lying shores, dunes form behind beaches. Dunes look like rolling hills of sand and are blown into place by the wind. New, smaller dunes are often changing shape as the wind continues to affect them. Waves and currents move the accumulated sediment constantly creating, eroding and changing the coastlines.
Located in tropical ocean waters, coral reefs provide priceless resources to both human and marine life. The leading natural cause of destruction among the coral reefs is global warming. Other natural causes are earthquakes, hurricanes, cyclones, and typhoons. The destruction to the coral reefs from these natural disasters is minimal compared to the dangers caused by man. Man-made destruction has a much wider impact on the health of the coral reefs. This destruction includes over-fishing, damage from anchors, aquarium industry, overgrowth of seaweed, and being smothered by sediments.
In addition, Hurricane Sandy affected not just humans, but also various wildlife. Animals, such as non-migratory birds lost their habitat like nests, trees and food sources such as fruits and berries. As for migratory birds, they were blown away by powerful winds; Many of which expired or lost direction to their final destination. Other affected beings were sea life; some sea life such as crabs, minnows, fish hatching, were pushed out of the water by the vigorous winds into the land, which soon cause their demise. In addition, the ocean’s thousand years old undisturbed ecosystem has to rebuild.
This is because of the damming of the Colorado River in the United States, the drastic reduction of fresh water and the coastal development. One way of the coastal destruction would have to be when humans place fish nets to catch shrimp, it disturbs the ecology and the bedding and the sand on the bed floor, disturbing the animal from going to that spot.
It’s funny how things that you used to do as a kid can change the course of people’s lives. Myself, when my parents told me and my brothers and sisters that we were going to the cabin meant a week of solid fun. My family has a cabin up on Camano Island, which is about 20 minutes north of Everett, right off of the I-5 interstate. My family would go up there during the summer with my cousins and grandma, and go swimming when the tide was in, build sandcastles when the tide was out, only to have them washed away when the tide came back in, build forts with the new driftwood that came in each year, explore the wrecked ship down the beach in one direction from our cabin, and scour the dunes that were north of our cabin. The dunes were the best part going to the cabin. We would always try to get there by walking along the wood that had been washed up and once we got there, we would race up the hills and jump down into the sand pits below. Another things that we all used to love doing, were to see who had carved messages into the sides of the dunes. There were all sorts of messages, love message from husband to wife, boyfriend to girlfriend. ‘I was here’ messages, and then there were simply names. That is what we always used to do. Every year, my two cousins, dad, three siblings and I would climb up into the dunes and carve our names into the wall using sticks. This was done over and over again for about 8-10 years. Over the last couple of years we did this we noticed that we could see a house at the top of the dunes. This was something that we never noticed before and when we asked my dad, he said that he never noticed it either. We thought nothing about it at the time, carved our names in the wall and went back to the cabin. Later on we heard from other people who lived up there that there was a big concern by the people who live in that house that all of the messages that people had carved along with the natural erosion of the hills has caused the hill side to be dangerously close to being pushed back far enough to where the house might fall down.
Tourism presents specific threats, both direct and indirect, to coral reef ecosystems, often leading to the destruction of the economic and natural resource based upon which it depends. Direct tourism threats include: damage to corals by divers, snorkelers, boat anchors and damage by cruise and recreational boat groundings. The many tourists also contribute to the polluting of the reefs.
The uncontrolled tourism increase is threatening many natural areas around the world.with the uncontrollable levels of tourism this can put great deal of pressure on an area, andthis could end up leading to negative environmental impacts on the air and the water quality, thevegetation,the soil.the wild life and the possible job opportunities.
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.