Disaster Hotspot Case Study - California

olw-1234
Mind Map by , created over 6 years ago

Physical Geography- World at Risk Mind Map on Disaster Hotspot Case Study - California, created by olw-1234 on 05/05/2013.

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olw-1234
Created by olw-1234 over 6 years ago
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Disaster Hotspot Case Study - California
1 Disaster hotspot is an places at risk from 2 or more hazards
2 Earthquakes
2.1 The San Andreas fault line runs the length of California which is a conservative plate boundary
2.2 Occur when pressure between the plates build up and then suddenly released and jerk past each other
2.3 California has 2 or 3 earthquakes that can damage buildings each year
2.4 Chance of a 7.0 earthquake to hit San Franciso bay by 2025
3 Droughts
3.1 Caused by anticyclones. Dry sinking air means no rain
3.2 Also caused by La Nina events which means less evaporation so there's less precipitaion
3.3 Increased wind blowing westward from desert areas
3.4 California suffers from wildfires during droughts which spread quickly over wide areas
3.5 2007 wildfires killed 22 people and destroyed 1300 homes
4 Tsunami
4.1 Series of large waves in a coastal area
4.2 Caused by earthquakes on the sea bed
4.3 Earthquake under the pacific ocean causes a tsunami in California
5 Landslides
5.1 Occur on unstable steep slopes
5.2 Caused by earthquakes
5.3 Risk is high in California because of building on and around steep slopes
6 Volcanoes
6.1 Hasn't been one in California since 1915
6.2 Volcanoes being monitored
7 Parts of California are vulnerable
7.1 70% of California live with in 50 km of the fault line
7.2 There are buildings on unstable land which causes increased risk of landslides
7.3 20% of residents live below the poverty line
7.4 Big economy so huge economic loss when a disaster happens

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