Basics of a tropical storm Flashcards
1
Q
Factors that cause tropical storms (3)
A
Sea temp. above 27c - so there is a continuous source of heat
Depth of ocean min. 70m - moisture provides latent heat
Between 5 and 25 degrees N and S of the equator - so coriolous effect can have highest impact
2
Q
Formation of a tropical storm
A
In ITCZ Ocean surface warms air above it Area of low pressure created Rising air cools Condenses forming cumulous clouds Coriolous effect starts rotation Continued condensation powers water to be taken up Winds can reach 75mph Eye is formed Carried by prevailing wind On reaching land - energy source cut Kills storm
3
Q
Occur in
A
the tropics
4
Q
Measured using the
A
Saffir-Simpson scale
5
Q
Saffir-Simpson scale
A
Measures central pressure
5 point scale
6
Q
Other hazard associates with tropical storms
A
Storm surges - e.g Katrina Coastal flooding River flooding Landslides Heavy rainfall - known to reach 300mm High winds - known to reach 150km/h
7
Q
Methods of prediction
A
Geostationary satellites
Computer models
Airplane investigation
Hurricane warning systems
8
Q
Methods of preparation
A
Drills Evacuation protocol Educate - ways to retrofit homes Land use planning - limit development in high risk areas Sea walls Flood barriers Local community plans Insurance - for rich people
