Earthquake - in different countries
Earthquake is the most devastating disaster. An earthquake is a result of sudden release of energy in the Earth's crust that creates seismic waves. We feel it like a vibration, sometimes it feels normally and sometimes it feels strongly. Some times it give us time to save ourselves and sometimes it doesn't give any time just destroy everything. Earthquakes are responsible for the loss of about 50,000 lives every year in the world. Loss of property in a single earthquake is sometimes enough to upset a whole 'national economy'. The intensity of an earthquake is measured on a 10 point scale originally defined by Richter in 1958. Earthquakes over 5.5 are progressively damaging to property and human life. In the whole world the southern part of the earth is the most risky area for earthquake.
The worst earthquake was in 2000 decades was held in 26th December in 2004 in Southern Indonesia. It causes a heavy damage and the nation lost many lives.
After that in 2007 again a big earthquake held in northern part of Indonesia.
And in 2011 a big Tsunami and earthquake held in Japan. It was the most worst earthquake for Japanese. It takes 13,000 lives and still 12,000 people are missing.
Naturally the most risky area is Japan, Indonesia and Iran. But in Southern Asia India's Himalayan area and Bangladesh is also risk full. Basically there is no advance signal for earthquake so we don't have to do anything before but we can minimize the damages by taking some effective steps.
longest biggest tallest skeletal oldest after earthquake
When earthquake occur major disasters take place. Building can collapse; fires may be induced; floods may occur due to collapse of dams and protective works on rivers; avalanches and landslides take place; tidal waves on coastal belts can occur; hazardous substances and gases can be released; and essential services like water supply, electricity, sewage systems, communication lines, and transport can be disrupted. The major factor contributing to both economic and human loss is the collapse of building during earthquakes.
Earthquake forecasting is a relatively complex risk. It aims at forecasting location, time and magnitude of an impeding earthquake. A network of 56 seismographic stations has been set up in India and more are being planned under the jurisdiction or coordination of the India Meteorological Department (IMD) which measures daily seismic activity parameters, namely, velocity of primary and secondary waves and micro-earthquake over the point where the instrument is set. Apart from these parameters, various other ground parameters are also taken into account for prediction purposes like crustal deformation; change in seismic wave velocity due to stresses in rocks, large decrease in magnetic susceptibility of rocks just before earthquake; and change in electrical resistant of rocks. These parameters are empirical and no constant factor has been found to predict accurately the occurrence of earthquakes. Lets wait for more modern technology for prediction of earthquakes.
