Coastal Management

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Constructive waves are low energy waves that deposit materials on a coast.As the waves approach such as coast, the friction between the waves and the sea bed causes the waves to slow down at some distance from the coast.The waves break gently over a long distance.Swash is powerful than backwash, the more materials are carried up and deposited on the coast than are removed.

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Constructive Waves

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Destructive waves are high energy waves that’s erode a coast .They are common along steep sloping coasts where they are break with a great force over a short distance.The backwash of the waves is more powerful than the swash.More materials are removed than are deposited on the coast.

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Destructive Waves

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Corrasion is a geomorphological term for the process of mechanical erosion of the earth's surface caused when materials are transported across it by running water, waves, glaciers, wind or gravitational movement downslope.

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Corrasion

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Damage caused to metal, stone, or other materials by corrosion.

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Corrosion

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The laying down of matter by a natural process.

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Deposition

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The process of eroding or being eroded by wind, water, or other natural agents

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Erosion

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The term also is used as a synonym for fetch length, which is the horizontal distance over which wave-generating winds blow. In an enclosed body of water, fetch is also defined as the distance between the points of minimum and maximum water-surface elevation.

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Fetch

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A part of a system of sand dunes on the side nearest to the sea.

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Foredune

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Hydraulic action is erosion that occurs when the motion of water against a rock surface produces mechanical weathering. Most generally, it is the ability of moving water (flowing or waves) to dislodge and transport rock particles.

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Hydraulic Action

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The movement of material along a coast by waves which approach at an angle to the shore but recede directly away from it.

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Longshore Drift

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the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

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Refraction

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The swash zone, defined as that part of the beach extending from a nearshore shallow depth to the limit of maximum inundation, is a relatively narrow region of great importance for the exchange of sediment between land and sea.

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Surf & swash zone

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The evolution of plantcommunities at a site over time- from pioneer species to climaxvegetation. At each stage of the succession the plant community alters the soil and microclimate, allowing the establishment of another group of species.

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Vegetation succession

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In fluid dynamics, the wave height of a surfacewave is the difference between the elevations of a crest and a neighbouring trough. Wave heightis a term used by mariners, as well as in coastal, ocean and naval engineering.

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Wave height

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The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

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Wavelength