Flashcards
Coastal management strategies: soft and hard engineering
Flashcards do conjunto (7)
- 1What is involved in beach nourishment?replacing the material that is lost through longshore drift. building the beach back up to dissipate the wave energy
- 2What does dune regeneration entail?Very fragile and affected mostly by the removal of veg by humans and animals leading to blow outs that is the arg removal of sand due to strong winds
- 3What do management strategies of sand dunes include?1.replacing veg such as marram grass to stabilise the dunes
2.restricting access
providing boards wit info about the potential damage and also walk ways so that veg is not trampled - 4What s is managed retreat?ABANDONING THE CURRENT LINES OF DEFENCE.
When the coats line is allowed to retreat and become flooded and form a salt marsh or a mudflat. - 5What is land use management?Impacts may be able to be mitigated but assessing peoples education and behaviour. Help people place for the future and ho development an be managed without causing more damage
Giving land that may be flooded to grazing rather then crop growth because animals can be moved - strategy only working if the local pop agree to having their land use limited - 6what occurs in the 'do nothing' strategy?letting the coast take its natural course - for some coastline they're not worth being protected so its cheaper to let nature do its thing.
- 7HARD ENGINEERINGsea wall - recurved throws waves into the path of other waves to reduce eabe energy - must be continuous to avoid damage by HC
Rock armour - large boulders that absorb wave energy they're placed angular to the = larger surface area facing the coats - the rocks are not secured as moving absorbed more energy
gabions - smaller than rip rap
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- FlashCards sobre Sem título, criado por emily balmbra em 28-06-2017.
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