7-CGC1W1 Natural Disasters

Natural Hazards vs. Natural Disasters

NH - Occur naturally

ND - Take lives and destroy infrastructure

Geologic Disasters

Caused by earth processes like Techtonics forces

Tsunamis

Huge waves of water

Caused by underwater earthquakes

Atmospheric Disasters

Caused by weather and climate

Hydrologic Disasters

Caused by water processes: heavy rains or snows

Floods, erosion and drought

Primary effects

Building collapse due to a Tsunami

Secondary effects

Loss of electricity or fires caused by an earthquake or flood

Tertiary effects

Long term, crop failure

Economic impacts

Type, size, and intensity of events

Loss of livestock, crops, damage to farms

Political impacts

Before event

• Warn public, train staff and public, and identify hazards

During event

• Search and rescue

Afterwards

• Rebuild, recovery plan, keep food and water in check

Social Impacts

Damaged buildings

Families unable to contact each other

Activities are cancelled

Environmental impacts

Wildlife destroyed

Air pollution

Disease and pests

Mitigation

Attempt to keep hazards from becoming more

Structural Mitigation

Physical construction to minimize impacts of hazards

Non-structural Migration

Early warning systems, evacuation planning and emergency response preparedness

Long term affects

Floods, and everything destroyed (buildings)