2.3(b) Coastal flooding Flashcards
Which countries typically face the biggest economic cost from coastal flooding?
Developed countries
What is wet floodproofing?
Allowing some flooding of the building
What can cause flooding in estuaries during a storm?
High river discharge combined with a spring tide, causing a backflow of water
How can buildings be designed to cope with low levels of flooding?
By elevating them so that flood waters can pass underneath or using raised foundations
What kind of modern technology is used for flood forecasting?
GIS, satellite and computer monitoring, weather stations (local and national)
What is the purpose of early warning systems in flood management?
To allow communities to prepare (evacuate or take shelter) before flooding occurs
What is dry floodproofing?
Sealing a property so that floodwater cannot enter
What are tsunamis?
Large sea waves due to underwater earthquakes
What is the purpose of buffer zones in flood prevention?
To allow areas of land to flood before reaching settlements, dissipating the energy of the surge
What are two methods used to help forecast coastal flooding?
Past records and modern technology
What is a storm surge?
A rapid rise in sea level caused by really low-pressure storms
Name three actions that can be taken to prevent coastal flooding.
Building flood defences, establishing emergency centers, implementing early warning systems
What causes a storm tide?
A combination of high tide and low-pressure storm
Which countries typically face the biggest impacts from coastal flooding?
Emerging countries
