1.7 Tectonic Hazards
- Created by: MaggieNaylor
- Created on: 16-04-21 09:21
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- 1.7: Trends and Patterns for Tectonic Disasters
- 1.7A
- Since 1960
- Economic cost of disasters has increased (because global wealth has increased)
- Number of people affected has increased because of a larger population
- Number of deaths has decreased because of improved healthcare
- But there are spikes with mega-events
- Number of recorded hazards has increased
- Number of disasters is falling
- However, these trends/patterns may not be 100% accurate/reliable
- Why?
- Different definitions of disaster
- Do primary/secondary deaths count?
- Disasters in remote places are often under recorded
- Deaths may be understated due to political bias e.g. Myanmar 2004
- Data difficult to collect e.g. in densely populated areas
- Time-trend analysis
- Why?
- Since 1960
- 1.7B
- Tectonic disasters can have regional and global economic and human impacts
- E.g. the E-15 eruption impacted Kenya and Greece due to tourism/production interruptions
- E.g. the 2004 Asian tsunami impacted multiple countries
- E.g. 2011 Japan tsunami led to the breakdown of the Fukishima nuclear power plant and the closing of other nuclear plants
- This impacted Japan's energy policy, and meant they had to import energy supplies from other countries.
- 2011 Tsunami -5% GDP, this impacted TNCs
- Think GPN
- Mega disaster: large scale impact, difficult to manage, international support required
- Tectonic disasters can have regional and global economic and human impacts
- 1.7C
- Multiple-hazard zone
- When hazards combine to create an increased risk for a country
- The Philippines is a multiple-hazard zone
- E.g. it is in the typhoon belt
- Means that it is vulnerable to hydrometeorological hazards
- This can contribute to a tectonic disaster as it can exacerbate the secondary impacts of a natural hazard
- E.g. Typhoon Haiyan
- E.g. could exacerbate liquefaction from an earthquake
- This can contribute to a tectonic disaster as it can exacerbate the secondary impacts of a natural hazard
- Means that it is vulnerable to hydrometeorological hazards
- It lies on the ring of fire so is vulnerable to violent, common volcanoes
- E.g. Pinatubo
- It is also vulnerable to earthquakes as it lies on a convergent plate boundary
- E.g. it is in the typhoon belt
- Multiple-hazard zone
- 1.7A
- Megacities/urban areas are zones of multiple hazard risk
- Poor quality housing
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