earthquake management/ response
- Created by: roseb00d
- Created on: 02-07-22 15:35
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- earthquakes management / response
- predicting
- is is very hard to predict earthquakes as they can occur anywhere along a fault line and the changing stress is not very predictable
- using radon gas - it can build up in cavities and cracks and it is thought that it can release with the strain of the earth's crust before on earthquake- reliability of this method is inconclusive
- monitor ground deformation- use tiltmeters, laser beams and gps satellites (SLR) to detect ground deformation
- ground water levels and chemistry - water table experiences suddern and sharp changes before earthquakes - there are also links to change in water chemistry
- foreshocks - often get small earthquakes before the big one.
- the "mogi doughnut hypothesis" is a theory that states that a circular pattern of foreshocks will occur around the epicentre of the larger earthquake - limited backing up evidence
- japan uses early warning systems to give seconds to minutes of advance warning to settlements - the sensor pick up the p waves and alert the population before the more damaging 2 waves hit
- protecting
- the level of protection in acted by a country heavily depends of economic status
- ways to protect people (mostly through infrastructure)
- fire resistant building materials
- computer controlled weight on the top to counter balance swaying
- automatic shutter to avoid showering people with glass
- criss cross panneling to avoid pancaking
- shock absorbers in foundations
- foundations sunk into bedrock and not clay
- preparing
- the aim of preparedness is to get society to s satisfactory level of readiness to respond to the hext hazard event so that the effects pf the hazard can be minimised
- examples of preparedness are:
- emergency kits e.g. first aid
- education/ drills
- preventative health care e.g. vaccines against the flu
- stockpiling emergency reserves
- every september 1st in japan since 1960 they have a disaster prevention day
- predicting
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