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Tangshan Earthquake Report

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1976 Tangshan Earthquake

Introduction:
At 03:42 AM on Wednesday July 28 1976, it was believed that the largest earthquake had occurred near the Tangshan (a large industrial prefecture-level city in northeastern China with approximately 1 million or more residents) in Hebei with a magnitude of 7.8. The earthquake struck at a very late mid-night (03:42 AM) where more than a million people laid sleeping and not evacuated. The entire earthquake was claimed to last for approximately 14 to 16 seconds with a 7.1 magnitude aftershocks. The event struck a totally unexpected area, demolishing the city and causing 242,000 casualties and at least 700,000 were injured resulting it to be the one of the deadliest earthquakes in the twentieth century. [Rosenberg
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Its epicentre was located/positioned in the southern part of the city, some 15 km above the earthquake 's focus and the vibration was felt more than 1,100 km away in all directions. Later in the same day as the major earthquake, a major aftershock with a magnitude of 7.1 occurred in the city of Luanxian, the aftershock headed 70km to the northeast. The aftershock cause additional damage and casualties that resulted the rescue team to face major difficulties to help the people already trapped beneath the rubbles. The earthquake had occurred near a previously unknown fault, which is now known as the Tangshan fault, in the Cangdong fault system close to the system 's intersection with the Yin Shan-Shan mountain belt. The Tangshan fault is a strike-slip (Strike-slip faults with left-lateral motion are also known as sinistral faults. Those with right-lateral motion are also known as dextral faults) fault oriented in a north-northeastern direction. The main shock had caused a 120 km subsurface rupture which extended bilaterally north-northeast and south-southwest of Tangshan; it also caused prominent surface faults to appear in the city.

Conclusion:

In conclusion, the Tangshan earthquake was one of the most devastating natural disasters the world has ever seen. It had struck on July 28th, 1976 at 03:42 A.M near Tangshan (a large industrial prefecture-level city in northeastern China with approximately 1 million or more residents) in Hebei with a magnitude of 7.8. It has been stated that there have been 242,000 casualties and at least 700,000 people were injured resulting it to be the one of the deadliest earthquakes in the twentieth century. It was unexpected as it had struck at a very late time where people had been asleep and not
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