Unit 1 World At Risk: California

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  • Created by: Natasha
  • Created on: 08-05-13 15:24
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  • California: A Disaster Hot Spot
    • Background
      • MEDC
      • Suffers from range of geophysical  hazards e.g. earthquakes & atmospheric hazards e.g. drought
      • Hazardous zone is along the San Andreas Fault which runs parallel to coast.
    • Earthquakes:  conservative plate boundary
      • 2003 Central California/San Simeon
        • Impacts: 2 deaths, 40 injuries, 29,000 workers exposed to strong shaking
        • Response: All high rise buildings now resistant, public highways strengthed & modified.
    • Drought  & Wildfire: California 2007
      • Causes: Santa Ana winds. Air loses moisture as its forced to rise by high mountain ranges but high pressure also heats air.
      • Impacts: Humidity- 15%, temp 90+, nearly 500,000 acres of burnt vegetation, 7 people died.
      • Response: People evacuated, funds were available for fire fighting units or emergency response programmes.
    • Landslides: La Conchita 2005
      • Causes: after 15-day period of rain, in jan 05 southeastern portion of the 1995 landslide deposit failed, resulting in shallow, rapid fluid flow
      • Impacts: 10 people killed, destroyed 13 houses, 23 houses damaged.
    • Coastal Flooding: New Year's Day 1997
      • Causes: 3 subtropical storm struck, added 30 inches of rain, levees failures   flooded California
      • Impacts : 23,000 homes/   businesses & agriculture/ land/bridges  /roads destroyed, 9 people killed. 120,000 evacuated

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