EQ3 Flashcards
Facts about the trends for tectonic hazards and hydro meteorological hazards since 1960s?
The hazard trend for tectonic hazards has stayed the same since 1960s, however the hazard trends for hydro meteorological has increased dramatically, mainly due to increased mg in the oceans leading to more storms, floods etc.
4 reasons why the number of disasters has increased?
- high population density
- better recording to collect data and when a hazard has happened
- living in vulnerable areas
- higher levels of economical damage
The number of deaths has decreased over time, except for where there have been major events (mega disasters)
2 losses that have increased over time due to hazards?
Higher social loss in poorer area (gdp)
Higher economic loss in richer areas, however they can now cope better
Problems of the figures of hazards?
- there are different definitions of disasters
- How to count the cost or number of deaths, e.g. as some places will only consider the primary effects, or if the healthcare was damaged it would cause more people to die due to that
- Some governments won’t want that data to get out in its entirety due to the impacts it may have on the government
Mega disaster?
A large number of deaths, a large economic loss, a wide aerial extent
2004 Boxing Day Asian Tsunami?
Magnitude of above 9 on the MMS and had a massive spatial element, covering the whole of the Indian Ocean Basin. Many countries had Low level development and were in low line coastal planes which would had a major impact on the level of disaster and economic loss. Tourism was massively affected for years to come
3 ways to modify the event of a hazard/disaster?
Land use zoning
Tsunami defences (warnings, sea walls)
Lava diversion