Disaster Hotspot Case Study- Philippines

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Mind Map on Disaster Hotspot Case Study- Philippines, created by r_h_i_w on 07/05/2015.
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Mind Map by r_h_i_w, updated more than 1 year ago More Less
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Created by olw-1234 over 9 years ago
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Disaster Hotspot Case Study- Philippines
  1. Volcanoes
    1. Near destructive plate boundary Philippine plate being subducted by the Eurasian plate
      1. Islands were formed by combination of folding at the boundary and volcanoes were formed from magma risen to the surface
        1. Erupted in 1991killed 350 deaths and 58000 were evacuated
        2. Earthquakes
          1. Philippine plate and the Eurasian plate can become locked together causes pressure to build up the jerk causes and earthquake
            1. Can also occur at fault lines in the area where the plate cracked under pressure
              1. In the last 400 years there have been 65 destructive events
                1. The worst earthquake was in 1990 near Rizal city, caused 1700 deaths and cost £300
                2. Landslides
                  1. Get lots of rain and the areas with steep slopes experience landslides
                    1. Country experiences a tropical monsoon climate which in combination with deforested hillsides leaves the area very prone to landslides
                    2. Can also be triggered by earthquakes
                    3. Typhoons
                      1. Have 10 typhoons every year
                        1. Average annual death toll 529 and costs £90
                        2. Developed in the pacific ocean and move westward over the island
                          1. Latitude between 5 and 20 degrees north of the equator
                            1. Sea temps over 26.5 degrees
                              1. Coriolis effect bring about the maximum rotation of air
                            2. Tsunami
                              1. Earthquakes in the surrounding ocean could cause a tsunami
                                1. 1976 earthquake of 7.9 caused a tsunami killed 5000 people
                                  1. From 1600 to 1980, 27 events recorded
                                  2. Drought
                                    1. have distinct wet and dry seasons
                                      1. Occur when the wet season hasn't bought enough rain to last the dry season
                                      2. Flooding
                                        1. During the wet season floods can be caused by Typhoons and heavy rain
                                        2. Population is vulnerable
                                          1. Densely populated area greater risk of disaster
                                            1. Total population 91 million: Density 240 per km2
                                            2. Population pressure lead to deforestation causing more landslides
                                              1. Fast growing economy people still live below poverty line
                                                1. GDP per capita is only $5000
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