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5 Cards in this Set
- Front
- Back
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where,when, magnitude and cause? |
LA 1994 - 6.7 magnitude - centered on the subarb of northridge, north of central LA - caused by movement along a thrust fault connected with the san andreas fault, and the northwest motion of the pacific plate |
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hazards? |
violent ground shaking lasted for 10- 20 seconds damaging buildings and infrastructure. - quake triggered thousands of small landslides |
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exposure? |
La metropolitan area has a population of 16.5 million |
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how vulnerable is LA? |
- california richest state in worlds richest country - investment helped to reduce LA's vulnerability to earthquakes - the built enviroment is designed for seismic reisistance. Stringment building codes and high levels of preparedness are in place. |
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impact of northride earthquake, LA>? |
- 57 people died - 680000 people affected, mainly through psychical damage to residential properties and small businesses. - US$ 43 billion economic damage - near epiccentre, well engineered buildings survived the shaking without damage. - many steel framed buildings cracked and reinforced concrete columns columns crushed: investigations showed a need to improve building codes. |
