Natural Calamities And Its Consequences
Natural calamities are ly occuring hazards like earthquake, volcanic eruption, tsunamis, floods and tornadoes. Natural calamities occur due to the natural imbalance caused by problems like population explosion. The earthquakes are caused by the movement of the plates which lies below the earth's crust, those plates are called tectonic plates. This movement of tectonic plates causes the cracking of the earth surface, causing a lot of economic losses like building collapses and so on.
Natural calamities are naturally occuring hazards like earthquake, volcanic eruption, tsunamis, floods and tornadoes. Natural calamities occur due to the natural imbalance caused by problems like population explosion. The earthquakes are caused by the movement of the plates which lies below the earth's crust, those plates are called tectonic plates. This movement of tectonic plates causes the cracking of the earth surface,causing a lot of economic losses like building collapses and so on. Earthquakes does not make too much loss, it is the secondary factors like building collapses and the tsunamis formed by the seismic waves emerged by the movement of plates below the sea and it causes the generation of huge tides which is ten times bigger than a normal tide making heavy economic and commercial losses. These losses can be minimised by better construction purposes and introducing early warning systems. Early warning systems are very much having significance in which people at risk, receive and understand from the information conveyed. One of the most significant earthquake ever recorded is the 2004 Indian ocean earthquake which is recorded as the third largest earthquake ever recorded.
Volcanic eruption is another divison of the natural calamities which cause widespread destruction. The effects of the volcanic eruption include the volcanic eruption itself by the fall of rocks during the eruption time. Secondly the lava which emerges out from the volcano and the third one is the volcanic ash generally meaning the cooled ash. This ash has the consistency of ground class causing abrasion damage to the moving parts such as engines. The main defects of these volcanic ashes is the immense cloud which is formed over the volcanoes which causes many problems if humans inhale and it has a disastrous effect on climate which will last for years.
Floods can be defined as the overflow of water which is entirely different from the normal river flow and these are caused by the extended rainfall from a storm including thunderstorms and the places were rivers converge.
The development of early warning systems with adequate monitoring systems for the purpose of collecting necessary information to be taken as the major steps for saving lifes and minimising damage to property.
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N K Ravishankara
ISC Technologies, Kochi - India. © All Rights Reserved.
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