Living with Natural Hazards: Risk and Responses

GCSE Geography · The Challenge of Natural Hazards

Understanding Natural Hazards

A natural hazard is a natural event (geological or meteorological) that threatens people or property. A hazard becomes a disaster when it causes widespread damage, loss of life, or disruption that overwhelms the affected community's ability to cope.

Natural events only become hazards when they affect people. An earthquake in an uninhabited desert is a natural event, not a hazard.

Hazard Risk

Hazard risk is the probability that a natural hazard will occur and its potential to cause harm. Risk depends on:

The nature of the hazard — magnitude, frequency, predictability
Vulnerability — how exposed and susceptible the population is (poverty, building quality, awareness, health)
Capacity to cope — governance, emergency services, infrastructure, wealth, education, technology, community resilience

Risk equation: Risk = (Hazard × Vulnerability) ÷ Capacity to cope

Factors Increasing Hazard Risk

Urbanisation:

Rapid urban growth, especially in LICs and NEEs, concentrates large populations in hazard-prone areas
Informal settlements built on unstable slopes (landslide risk) or floodplains
Poor building standards in slums cannot withstand earthquakes or storms
Example: Over 1 million people live in informal settlements on the slopes of volcanoes in cities like Quito (Ecuador) and Naples (Italy)

Climate change:

Increasing frequency and intensity of extreme weather events
Rising sea levels increase coastal flood risk for hundreds of millions
Changing rainfall patterns increase drought in some areas and flooding in others
Thawing permafrost in Arctic regions destabilises ground and infrastructure

Poverty:

Poor communities cannot afford earthquake-resistant buildings, early warning systems, or insurance
Less access to education about hazard preparedness
Recovery is slower due to lack of savings and limited government support
The same magnitude earthquake kills far more people in LICs than HICs (as the Haiti vs Japan comparison demonstrates)

Population growth:

More people living in hazard-prone areas — coastlines, river floodplains, volcanic slopes, earthquake zones
Pressure to develop marginal land as populations expand

Responses to Hazards

The Park Model of Hazard Response

The Park Model shows how the quality of life in an area changes before, during, and after a hazard event:

1. Pre-disaster — normal quality of life; level depends on development

2. The event — quality of life drops sharply; severity depends on magnitude and preparedness

3. Search and rescue — immediate response; emergency services, volunteers, aid agencies

4. Relief — providing food, water, shelter, medical care to survivors

5. Rehabilitation — restoring services (water, power, transport); temporary housing; debris clearing

6. Reconstruction — rebuilding permanently; may take months to years; opportunity to "build back better"

In HICs, the curve often recovers above the pre-disaster level (improved buildings, infrastructure). In LICs, recovery may be slower and may not reach the original level.

The Hazard Management Cycle

A continuous cycle of four phases:

1. Mitigation — long-term measures to reduce risk BEFORE a hazard occurs

Land-use planning (avoiding building in hazard zones)
Building codes (earthquake-resistant design)
Infrastructure protection (sea walls, flood barriers)
Education and community awareness programmes

2. Preparedness — planning for the event

Early warning systems (tsunami sirens, weather forecasts)
Emergency drills and evacuation practice
Stockpiling emergency supplies
Training emergency responders
Communication plans

3. Response — actions DURING and immediately AFTER the event

Search and rescue
Emergency shelter and medical care
Distribution of food, water, and supplies
Restoring communications and transport

4. Recovery — restoring normality AFTER the event

Rebuilding homes and infrastructure
Economic recovery programmes
Psychological support
Reviewing and improving preparedness for the next event

The Role of Governance

The effectiveness of hazard management depends heavily on governance (the quality of government and institutions):

Good governance:

Enforces building codes and land-use planning
Invests in early warning systems and emergency services
Coordinates international aid effectively
Funds long-term recovery and resilience-building
Example: Japan — strict building codes, extensive tsunami warning system, regular public drills, well-funded emergency services

Poor governance:

Corruption diverts resources from disaster preparedness
Building codes not enforced or non-existent
Limited emergency services and infrastructure
Aid may not reach those who need it most
Example: Haiti — decades of political instability and corruption left the country unprepared for the 2010 earthquake

International Response

When a major disaster strikes, the international community often provides assistance:

Government aid — bilateral assistance (e.g. UK's FCDO sending emergency teams)
International organisations — UN agencies (UNICEF, WHO, WFP), World Bank emergency loans
NGOs — Red Cross, Médecins Sans Frontières, Oxfam, Save the Children
Military assistance — deployment of foreign military assets for logistics, search and rescue
Public donations — charitable giving; social media campaigns

Challenges of international aid:

Coordination between many agencies can be chaotic
Aid may not match local needs (inappropriate supplies)
Political conditions may be attached to aid
Long-term dependency can develop
Local capacity may be undermined if external agencies take over

Exam tip: When discussing responses to hazards, always consider the timescale (immediate vs. long-term), the role of development level (HIC vs. LIC), and whether the response reduces future risk or merely addresses the current disaster.