Please enable JavaScript.
Coggle requires JavaScript to display documents.
Katrina and Nargis hurricanes - Coggle Diagram
Katrina and Nargis hurricanes
Nargis.category 4 at landfall. irrawaddy delta Myanmar.2nd may 2008
defences
mangrove forests protect the coast from flooding but many had been chopped down in the decade before nargis hit, reducing natural protection
impacts on environment
14,000km^2 of the irrawaddy delta was flooded
38,000 hectares of mangrove forests were destroyed
the flooding caused erosion and salination(increased salt content) of the land
warning and evacuation
warnings were issued on tv and radio but those didnt reach poor or rural living people so they didnt know what do do.
no emergency preparation plans, evacuation plans or an early warning system
indian weather agencies warned myanmar that the storm would hit in 48hrs
impacts on people
450,000 houses were destroyed and 350,000 damaged
65% of rice farms were destroyed causing loss of jobs
over 140,000 people were killed
many people suffered from diseases caused by poor sanitary conditions and contaminated water
forecasting
doesnt have a dedicated monitoring system
doesnt have a radar network-doesnt know how big storm surges will be.
Katrina.category 3 at landfall.south east USA 29th august 2005
defences
new orleans was very badly damaged, flood defences broke and flooded the city.
over 80% of the city was flooded
impacts on environment
sea turtle beaches were damaged
coastal conservation areas were destroyed, half of breton national wildlife refuge was washed away
flooding caused oil spills
warning and evacuation
mississippi and louisiana declared states of emergency, and 70-80% of new orleans left before the hurricane hit, reducing deaths.
the NHC issued a hurricane warning on the 26th august, continuing to track when it would hit
impacts on
people
300,000 houses were destroyed and more made homeless
3 million people were left without electricity
over 1800 people were killed
230,000 jobs were lost
forecasting
the national hurricane center in florida tracks and predicts the hurricanes using satellite images and planes that collect data on approaching storms
USA has a advanced monitoring system to predict when and where a hurricane will hit