How Can CL Be Managed To Meet The Needs Of All Players Flashcards
(14 cards)
Disaster equation for population density at the coast
Hazard= recession against vulnerability of the population over the capacity to cope
High consequence are mainly due
To the dense pop at the coast
Why r physical factors hard to predict
CC- can’t determine the exact effects cuz there r so many variables related to CC
Disadvantages of hard engineering e.g. groynes
High econmic cost and engineering difficulties
Severe impact on physical processes and it disrupts the sediment cell
Positives of soft engineering e.g. cliff regrading
Works well w natural systems and cuz of this in many cases it can adapt to CC but it may involve loss of land e.g. grading cliffs will lead to lose land of the top of it to enable the cliff to br regraded
What is cliff regrading soft engineering
Reduce steepness to lower risk of landslides and slumping. Improves safety for people and infrastructure near the cliff, preventing further econmic and social consequences of losing a home
Disadvantages of soft engineering
Very vulnerable to very strong storms and need lots of maintence to work
Integrated coastal management
Shown to work in sediment cells cuz we know that when there is an action in 1 place of the sediment cell, it will have consequences elsewhere, and to do this now, councils and local planners look at shoreline management plan which shows a much greater understanding of coasts as a system and also considers the littoral zone as well as the sediment cells
With management there r 4 main policies
Advance the line= building new defences to provide additional protection. Rarely used as it is expensive and environmental impacts
Hold the line= maintain defences to prevent further erosion
Managed retreat= build defences further inland and allow certain area to flood
No active intervention= do nothing
These will change overtime as circumstances change, so within the shoreline management plans, there may be a period wher we will hold the line, however it could change into managed retreat
These policies and the type of engineering we’d depend on cost benefit analysis
1)engineering feasibility= is it possible to do this in this location
2) value of land= sometimes the value may not be very much there may be historical context to it or may be a gas and petroleum terminal which the wider econmic value is of more value than the land itself so they may put in additional engineering
Environmental Impact Assesment (EIA)
Things that can’t be put into monetary terms
Conflict between groups
Whatever management we take is likely to lead to conflict
E.g. if we invest heavily in 1 area then that might cause problems elsewhere e.g. spend lots of money on the engineering to prevent erosion/flooing, less money for other infrastructure projects that can benefit the public
Why is timescale important in CC
We may be able to protect areas in the short-term but it becomes more difficult in the medium and long term
Overall conc
Managing the coast can become hard as it is hard to meet the needs for all players.
There is always going to be some level of conflict but conflict is on a sliding scale, from things that can’t be easily resolved to things that could lead to international conflict
