What are some interesting facts about coastal erosion?
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Your question is very general so that makes it hard to answer well, but I will try because you have asked for help. \n\nCoastal erosion is a natural process that can be accelerated by improper land use. It has become a large problem in the Gulf of Mexico, especially in Louisiana and Texas for several reasons. In Texas and along most coasts there is a process known as longshore drift. This means that the ocean currents move a specific direction and so sand and other sediment is moved longshore (along the shore) in one prevailing direction. When rivers are dammed they no longer supply sand to the river deltas and this longshore drift cannot resupply the beaches with sand. The beaches eventually become starved of sand and begin to erode. On the eastern coast of the United State longshore drift is northward, so barrier islands and other beaches tend to migrate northward. On the west coast of the US the drift is southward and so beaches lose sand where anything blocks the southward movement. Some jetties have been built that began to starve the beaches southward of sand supply and this has become a problem for those beaches. \n\nIn Louisiana the problem is a little different because there are several factors known to be causing a very rapid rate of coastal erosion. Louisiana is losing 18,500 acres of wetlands each year to coastal erosion. One large part of the problem is that this area was once part of the Mississippi River delta floodplain, and as levees have been built to prevent flooding, the areas have been deprived of additional sediment supply from the river. Another part of the problem is that the sediments that the area is built on tend to settle over time. The Mississippi River has built a pile of sediments of sand and mud that is several miles thick. With time this sediment compacts and sinks, causing flooding where the surface is no longer being resupplied from the river. Even another factor has been discovered that this part of the North American continent is sinking possibly as a response to the melting of glaciers on the upper part of the continent about 10,000 years ago. Since the northern part of the continent is still rising because of the weight of the ice removed when the glaciers melted, it works like a teeter-totter and the southern part is going down This coastal erosion is in large part the cause of much of the damage to New Orleans during last years hurricanes, as it created storm surge conditions that were more extreme than expected. \n\nOther types of coastal erosion are prevalent in states like California where large storms can move waves across the beach and erode the base of cliffs that are along the beaches. This often causes very nice houses to slide down the cliff in a landslide.  To some extent it is a natural process that should have been anticipated by those homeowners, but it probably is also being affected by sea level rise and beach starvation.  Earthquakes are even a factor in these coastal bluff landslides. \nhttp://www-csgc.ucsd.edu/STORIES/coastalerosion.html\n\nI've added some links to resources about Louisiana coastal erosion below.
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Erosion\nSoil erosion is a gradual process that occurs when the actions of water, wind, and other factors eat away and wear down the land, causing the soil to deteriorate or disappear completely. The main agents of soil erosion are wind, water, and tillage. Maintaining a continuous vegetative cover on the soil is usually the best way to control erosion. Soil deterioration and low quality of water due to erosion and run off has often become a severe problem around the world. Many times the problems become so severe that the land can no longer be cultivated and is abandoned. The key to minimizing soil erosion and saving the farm lands is the farmer himself. Ultimately, he is the one who must reduce the level at which erosion sediments are dislodged from his cropland. \n\nStudies in water quality relating to agriculture have shown that, of the four to five billion tons of sediment being deposited in the country's streams each year, over half is coming from croplands. The deposited soil, which contains pesticides, farm chemicals, and nutrients vital to the crops but damaging to ground water, gets there mainly as a result of runoff due to rainstorms and sheet erosion. \n\nRunoff occurs when the rainfall rate exceeds the soil's infiltration capacity. On sloping areas, runoff is a concern since it can carry soil particles, nutrients, and other chemicals with it. \n\nGeological erosion occurs where soil is in its natural environment surrounded by its natural vegetation. This has been taking place naturally for millions of years and has helped create balance in uncultivated soil that enables plant growth. A classical example of the results of geological erosion is the Grand Canyon. \n\nAccelerated erosion can be caused by man's activities, such as agriculture and construction, which alter the natural state of the environment. \n\n\n--------------------------------------------------------------------------------\n\nWind Erosion\nWind erosion, or "soil drifting" is caused by the action of wind on exposed soil, especially smooth, unprotected surfaces. Wind picks up finer soil particles and deposits them downwind. Improper tillage practices, low soil moisture, poor soil cover or any combinations thereof can increase the risk of wind erosion.\n\nDrip irrigation is a successful, economical way to water new windbreaks. \n\nWindbreaks of trees and shrubs in a subdivision in North Dakota make an interesting pattern on the land. \nA living snowfence in Colorado beautifies the landscape and will stop blowing snow, keeping snow on the fields where moisture is needed. \nWind barriers of grass and legume crops are rotated with row crops in Iowa. \nWheat residues are left on the soil surface to protect an Oklahoma crop field. \nBuffer strips of weeping lovegrass protect a cottonfield in Texas. \nPerennial grass barriers protect cucumbers growing in South Carolina. \nA combination of wind barriers and ground cover protects soil. \nWell-managed rangeland protects highly erosive soil in Wyoming. \nThe second most common erosion control practice in Canada is the use of windbreaks or shelterbelts, which are lines of trees or bushes planted at the borders of or within fields, normally at right angles to the prevailing winds (maintaining natural vegetation along fencelines has the same effect). This technique is most commonly used in the Prairies (29 to 37 percent of farms), where the flat terrain, minimal natural brush protection, large fields, and frequency of high winds make cultivated land especially vulnerable to wind erosion. Ontario farms also report substantial use of windbreaks (21 percent of farms).\n\n\n--------------------------------------------------------------------------------\n\nWater Erosion\nWater erosion occurs when rain, spring run-off, or floodwater carry soil particles away. This can occur through sheet erosion, where soil materials are removed relatively uniformly, or rill erosion where flowing water creates sm
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Estimates of the coastal land being lost in Louisiana range from 25-34 square miles per year. Another significant form of erosion in Louisiana is soil erosion related to agricultural practices, deforestation, overgrazing, and industrialization.\n\nThe second website has a good discussion of causes and remedies, as well as illustrations.
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sea level is easy to measure. If the water is suddenly a lot closer to the road next to the beach, you know the level has risen. If it is suddenly a half hour walk across the mudflats to get to the water it has dropped.\n\nWe also have these things now called satellites, maybe you've heard of them. They are good for measuring the position of things very accurately. If they say the ocean is now bigger and the land is now smaller, well I for one would believe it.
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Latitude, Ocean currents, Winds, Elevation, Relief and Nearness to water.
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Geography homework huh.\n\nBroadly.\n\n1) Improper removal of stubble or fallow cover leading to  erosion.\n\n2) Insufficient fallow time leading to decline in soil fertility.\n\n3) Over removal of tree cover leading to water table elevation and/or salinity.\n\n4) Over production of single crop types crops leading to nutrient depletion.\n\n5) Over-irrigation leading to turbidity and and slainity in irriagtion water sources.\n\n6) Failure to control tree growth within catchment leading to excess infiltration and loss of runoof. Irrigation water fails.\n\n7) Excess tillage of fragile soils leading to erosion.\n\n8) Tillage of soils in anticipation of  planting conditions that fail to transpire. Ground remains loose and without plant cover for extended periods and erodes.\n\n9) Overgrazing leading to desertification which encroaches on arable land.\n\nThat probably covers most of the practices that have caused land loss in the poast 6000 years.
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The hydrolic cycle is the main cause of erosion.  Rain soaks into the ground.  To much rain can saturate the ground with water, and if there are not enough plants the rain soaked land can be too heavy and you will get mud slides.  Rain also forms runoff in the forms of streams, creeks, rivers and deltas.  Erosion occurs in all these forms of runoff.  It can be good because minerals are pulled from the dirt and redistributed for better farm land.  However erosion can also cause disasters like what happened in New Orleans after Katrina.  Erosion had caused the entire city to sink below sea level, so when the dikes collapsed the water flooded the city.
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Erosion is caused mainly by inadequate handling of the ground (but it is a natural process). It depends on the composition of the soil (more sands, more erosion; more clay, less erosion).\n\nTo prevent it, ' the main one is to keep the ground covered '.\n\nThe covering protects against the impact of rain, as an umbrella, preventing the torrent formation. It is important to reduce the speed of the draining of the water and its impact in the ground.\n\nIf the covering of the ground well will be made, with more than 30% of the covered surface, the risks of the erosion diminishes more than in 60%. The direct plantation is a good technique to be used too.
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Does your question is "soil erosion in nepal"?\n\nlet's try this website\nhttp://www.slemishcollege.org.uk/Soil%20Erosion%20in%20Nepal_files/frame.htm
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The biggest erosion problem in Louisiana is the coastal erosion that is destroying wetlands and barrier islands at a rate between 25-34 square miles per year.
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Wind is the primary force that creates sand dunes. Sand itself is generally created by the erosion of rock material by water and ice.\n\nThere are two types of movement that wind causes in sand. One is called saltation. Wind picks up grains of sand and gives them forward momentum, but they will often fall back and bounce repeatedly, or cause other grains to move. This is about 75% of all movement of sand to form dunes. \n\nThe other movement method is called surface creep. Surface creep is the process where heavier sand grains are moved forward along a surface as saltating grains strike them.  It is estimated that about 25% of sand movement is moved this way. \n\nAs this moving sand encounters obstacles or changes in elevation such as a basin, the irregular flow of the wind will cause sand to accumulate in the "wind shadows." However, obstacles are not necessary to make dunes. The bouncing sand grains will gradually slow, losing energy from impacting heavier grains, and the sand itself tends to slow the wind speed close to the ground. Together, this differential speed of motion among grains, and saltation drag on the wind, will begin to produce small piles of sand, or ripples. Larger grains will tend to accumulate because the wind cannot move them, and cause more ripple effects.\n\nTrue dunes are formed when relatively strong winds blow over fine grained sands. The coarser grains tend to stabilize the windward surface of the dune, and finer grains are moved by saltation upward and over the peak of the dune, where they fall out of the wind and slip downward. \n\nIn areas of active dunes the dunes will migrate in the direction of the wind over periods of years. Many of the largest sand dunes in the world are considered paleodunes that are no longer moving. \n\nTo read more about sand dunes and how they form, as well as some information on the different types of sand dunes go here:\nhttp://www.nps.gov/whsa/Sand%20Dune%20Geology.htm
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Friction and erosion.
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Here's a link that talks about basic characteristics of tsunamis.  It was easy enough to search.  Thanks for the 2 points.\n\nhttp://en.wikipedia.org/wiki/Tsunami#Characteristics
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Depending on the location of landfall, there can be numerous effects on the environment. In general, you can expect severe damage to trees and plants which will affect wildlife habitat for some time. Plant life is easily defoliated and trees uprooted during high wind/rain events.\n\nAnother possible impact could be pollution to the surface and groundwater. Storm surge and heavy rains can easily cause water treatment plants to overflow and contaminate fresh water sources. Near by agricultural lands could also cause water contamination if the become flooded. Pollution would impact fish and other animals that depend on the fresh water supply.\n\nCoastal areas, including coral reefs and sand quality, are usually devastated by hurricanes too. Damage to corals can cause an imbalance to coastal ocean aquatic life.\n\nThere are many affects of hurricanes on the environment and people, but above just describes a few. Doing a key word search for "coastal hurricane impacts" or "hurricane impact on ecosystem" might give you more information
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if you drain the ocean you will see mountains, hills, if you fill it back agains you only see their tip, islands.. made erosions, volcanic eruptions, and so on..
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weathering is where the material is actually broken down where as erosion is what moves it to another place
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The Coastal Lowland is a narrow strip of relatively low ground between the sea and the cliffs leading to the Plateau. \nhttp://www.well.com/~bubbles/lowland.html\n\nThe Coastal Lowlands border the entire coast. They are flat plains, less than 100 feet (30 meters) above sea level.\nhttp://www.britannica.com/ebi/article-200847