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Tuesday, May 13, 2008

Earthquakes in China

An earthquake measuring 7.8 hit Sichuan province of China on 12-05-2008 and buildings, schools, factories were toppled and claimed approximately 10,000 lives and figures will surely soar as quite a more people are under the toppled structures. In one city a school building collapsed and 900 students are feared to be dead.

Big cities of China, Vietnam and Thailand even experienced the jolts. Army is called for rescue.

China is located in one of the most active seismic regions of the world and has been hit by numerous destructive earthquakes. The most significant of these earthquakes, in terms of lives lost, was that occurred in 1556. Later in 1975 and 1976, 2 earthquakes hit China. Following is brief account.

On 28-07-1976, an earthquake, which claimed officially 2,40,000 lives and unofficially more than 7,00,000, struck the city of Tangshan in Northern China. Tangshan is an industrial city 95 miles East of Beijing. The earthquake of magnitude 8 on Richter Scale struck, it was early morning and the city was fast asleep. The force of the quake motion was so that people were thrown in the air. Bridges, roads, homes, factories nothing was spared.

Haicheng, a town of about 1,00,000 inhabitants, in the Liaoning province of North-East China, experienced a quake of magnitude 7.3 on 04-02-1975. Based on studies of precursor events and unusual animal behavior (particularly of snakes, as snakes are termed as the most sensitive to earthquakes), warning was declared by local authorities and most of the population was evacuated to safer place. The life lost was less in this earthquake, but property damage was very high.

Earthquake hit in 1556 was the worse natural disaster in terms of lives lost. This quake in Hausien in the Shensi province of China. The earthquake devastated 98 counties and 8 provinces of Central China. The quake spanned an area of 500 miles (approx 805 Kms)and the average death toll was 60 % of population of the provinces. 8,30,000 lives were lost. The magnitude was estimates above 8 on Richter Scale (as instruments were not able to measure this magnitude, it was estimated.)

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