Background:
Erosion is a process where natural forces like water, wind, ice, and gravity wear away rocks and soil. Erosion occurs at the Earth’s surface, and has no effect on the Earth’s mantle and core. Water erosion is the removal of soil particles by heavy rainfall or running water. While the causes of erosion by water are generally natural, water erosion is usually caused by rainfall and runoff on a slope (GEI Works). The process of water erosion usually occurs on stream and river banks, sea shores and seaside cliffs (Reference.com).
There are six different types of water erosion: splash erosion, sheet erosion, rill erosion, gully erosion, valley or stream erosion, and bank erosion. Splash erosion is when small soil particles are detached and sent airborne through the impact of raindrops on soil. Sheet erosion, which occurs frequently during cloudbursts, is when raindrops break apart the soil structure. Small, short-lived, concentrated flow paths are developed during the process of Rill erosion. These paths create a sediment source and delivery system for hillslope erosion. Areas where precipitation rates exceed soil infiltration rates are more prone to this type of erosion. During gully erosion, water flows in narrow channels during or directly following heavy rains or melting snow. The gullies can erode to considerable depths. Continual water flow alongside land creates valley or stream erosion. It extends downward, deepening a valley, and headward, extending the valley into the hillside. This occurs more frequently during flooding. Banks of rivers and streams are naturally worn down during bank erosion (GEI Works).
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Hypothesis:
If the height of the water increases then the amount of soil erosion will increase because the speed of the water will create more pressure on the soil causing the soil to move
An increase in pebble roundness in the direction of long shore drift. The process of attrition will erode the pebbles. c) A decrease of pebble size in the direction of long shore drift, again attrition is involved. d) Undercutting (active erosion of the cliffs at one end of the bay).
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.
3. 120 MY : Continued erosion of the land as it is slowly uplifted and
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.
When it floods sediments can affect the land by losing nutrients in the soil and it can also affect the clarity of
Removing vegetation removes the root systems, which help hold soil in place. Running water can now more easily wash soil and rock away, increasing erosion.
As mountain ranges began to reappear, streams and rivers became more vibrant with rushing waters transferring boulders and gravels to different places on the surface of Earth. Water is known to be one of the most significant factors of the Exhumation of the Rockies; however wind is thought to have played an important role in the removal of the mountains from the depths of debris as well. As John David Love has said, “Wind erosion has tremendous significance in this part of the Rocky Mountain region” (McPhee 60). Consistent southwest winds, blowing in the same direction throughout each time period of the Earth’s history, picked up thousands of feet of debris from the surface of the Earth and carried it away into the Atlantic Ocean. The work of erosion through water and wind has given the landscape its
Storm Water Drainage: This is simply the water from rain, melted snow, etc. draining into
eroded as fast as 6 metres per year, but the average is 1.8 metres per
Therefore, the compaction test will be done in the laboratory by applying the same concept which is the sand in the mould will be compact and vibrate by using the variable methods of soil compaction so that the soil will experience the same situation as in construction work. The result among of these tests will be compare.
Coastal Erosion is a process at Muriwai that gradually wears away the rock particles of the earth's surface, transporting them to another location. There are many types of processes that cause erosion at Muriwai such as wave erosion, wind erosion and wave refraction.
The rocks are formed in places where there had been water at one time. Dead animals, plants and pieces or rock minerals carried by wind, water, ice, and gravity sink to the bottom of bodies or water. When the body of water dries up the rock becomes a surface layer.
the the change in sea level is due to a change in the level of land
Agriculture also leads to soil erosion, both through rainfall and wind. This soil can damage the aquatic ecosystems it ends up in, an...
There are many different glacial landforms created by glacial erosion, one of these landforms is U-shaped valleys or glacial troughs. This glacial landform has many distinct characteristics. One of these characteristics is that it has very steep valley sides caused by the glacier as it moves down the valley eroding the sides of the valley by the processes of abrasion and plucking. Abrasion is when the boulders and moraine carried by the glacier rubs and erodes the valley side as it physically moves down the valley. Plucking happens when the water in the glacier freezes inside of the cracks in the individual rocks on the valley side then the water freezes and as the glacier moves the rock is plucked or torn from the valley side producing the steep side to the valley.