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TROPICAL CYCLONES - Coggle Diagram
TROPICAL CYCLONES
CHARACTERISTICS OF CYCLONES
IN THE NORTHERN HEMISPHERE THEY ROTATE IN A ANTICLOCKWISE DIRECTION
SKY BECOMES CLOUDY, WIND SPEED INCREASES AND RAINS WITH SUNNY INTERVALS
IN THE SOUTHERN HEMISPHERE THEY ROTATE IN A CLOCKWISE DIRECTION
AIR PRESSURE FALLS, WIND SPEED INCREASES ADN HEAVY RAINFALL OCCUR (EYEWALL)
UP TO 800KM IN DIAMETER AND 20 KM IN HEIGHT
CONSEQUENCES OF CYCLONES
STRONG WINDS
HEAVY RAINFALLS
STORM SURGE
AN ABNORMAL RAISE OF WATER GENERATED BY A STORM
RISING SEA LEVELS
CAN MAKE WAVES UP TO 5M
STRATEGIES TO MANAGE THEIR IMPACT
GET PREPARED
FRESH WATER,FOOD AND MEDICINES
BUILDING ON STLITS
PREVENT WATER GETTING INSIDE
PREDICTION
We can know their movements and calculate their strength by using satellites.
EMBANKMENTS
CONDITION FOR THEIR FORMATION
Warm water must be at least 60m deep.
Little wind shear and a change in wind speed or direction with height in the atmosphere.
Ocean surface at least 27°C
enough energy for the evaporation of water: rises and condenses: precipitation.
PLACES
HURRICANES
Atlantic Ocean and Eastern Pacific Ocean
TYPHOONS
Western Pacific Ocean
TROPICAL CYCLONES
Indian Ocean and Australia
DEFINITION
Large areas of very low pressure with wind speeds over 119 km/h and heavy rainfall magnitudes
are categorised using the saffir-simpson scale (1-5).
HOW TROPICAL STORMS ARE FORMED
WATER EVAPORTAES FROM THE OCEAN AND CONTACTS WITH A MASS OF COLD AIR, FORMING CLOUDS
A COLUMN OF LOW PRESSURE DEVELOPS AT THE CENTRE, WINDS FORM AROUND THE COLUMN
AS THE PRESSURE DECREASES THE SPEED OF THE WINDS INCREASES