The Philippines: Causes Of Natural Disasters In The Philippines

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Philippines is one of the country that in can be found in the ring or fire or also called as circum-pacific belt where large numbers of earthquakes and volcanic eruptions which makes the country vulnerable to disasters such as landslides. Landslide is a natural disaster that cannot be avoided. It is a type of “mass wasting” which denotes any downslope movement of soil and rock under the direct influence of gravity. Mostly, landslides occur due to the erosion of the soil, heavy rainfalls, earthquakes, and volcanic eruption. There are also anthropogenic activities that contribute to landslides including heavy machine vibrations in the ground, irrigation, and deforestation that can make fragile slopes unstable. The composition and geological structure of the earth substrate or rock can influence to the frequency and type of landslide that might occur in a certain area. The natural weathering, as well as tectonic activity can affect the strength and cohesion of the earth substrate. The activity leads to make the soil structure vulnerable and easy to slip downhill that increases the propensity for landslide incident (Chen, 2006). According to the Mines and Geosciences Bureau (2010), with the changing weather conditions and amount of rainfall each season brings, we could categorically state the number of landslide occurrences is increasing. Landslide makes up to 6% of all the disasters in the Philippines (World Risk Index, 2012). Consequently, this aims to evaluate the

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