Categories: All - damage - hazards - social - flooding

by huiqi lee 2 years ago

115

Hazards of tropical cyclone

Tropical cyclones, particularly exemplified by Hurricane Katrina in 2005, pose severe hazards such as torrential rains, causing significant inland flooding and massive property damage.

Hazards of tropical cyclone

Impacts of tropical cyclones

Social impacts

New Orieans(US of Americas)

looting and rape become common

Unhygienic

1 million people homeless

Houses destroyed
people become homelessness
spread of diseases transmitted by insects
spread of water-borne diseases
physical infrastructure
water pipes or pumps

Examples

destroyed

Economic impacts

e.g

damaged/destroyed 30 oil platform

closure of 9 refineries

unemployment

Effects

total economic impact

may exceed $150 billion

Causes

loss of income
damaged crops

Why?

food shortage

cost to repair the damaged property and infrastructure

Physical impacts

E.g.
Manila

tropical cyclone

80%of health centres were destroyed

difficulties in distributing food and medicine to those who required

Philippines

where?

2009

When?

Typhoon Ketsuna

serious damage to the road networks

How?

damage any struture
houses, buildings, infrastructure such as bridges and roads

Hazards of tropical cyclone

Torrential rains

heavy rain of 250mm

caused massive flooding destroying 9 bridges

How

almost 1 million people to be without power

Effects on people

heavy rainfall in a short period of time
cause inland flooding

Storm surges

What?

USA

Where?

when?

waves of 3 to 10 metres

what?

how?

80% of the city New Orieans was flooded

causes of the flood

more than 1200 deaths

effects on people

fast moving floodwater
carry debris that can injure people
people will drown
damage properties and farmlands
massive flooding

effects

sudden rise of the sea level

what is it

low air pressure and strong winds
push the water towards the coast

creating huge waves

intense low pressure in the eye

sea level to rise

causes

Wind damage

Hurricane Katrina

What

2005

When

wind speed 200kn/h when hit New Orieans(USA)

What? and Where?

$108 billion in property damage

effect

loose debris to fly and hit people
will cause people to injured or killed
strong winds(119km/h)
will destroy properties and injuring people