Magnitude

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How are Earthquakes Recorded?

How are Earthquakes Recorded?

When an earthquake takes place, people say that it measured 6.2 or 6.5 on the scale. The scale they are referring to is the Richter Scale developed by Charles Richter in the 1930s. The Richter Scale measures the magnitude of the seismic waves or vibrations that travels across the earth’s surface. The scale uses a logarithmic formula using high-frequency data collected from seismograph stations. However, long before Richter developed his scale, a Chinese philosopher Chang Heng invented a device to measure earthquakes in 132 A....

Another Big Quake for 2010 – Chile

Where: Santiago,Chile March 17, 2010 : Chile experienced an 8.8-magnitude on February 27, 2010. Around 700 people lost their lives. This was the fifth strongest earthquake recorded in the world since 1900. The quake struck near Concepcion, Chile’s second largest city, where thousands of people were holidaying over the weekend. In neighbouring Argentina, houses and power lines collapsed. There were three tsunami waves that rose at least four metres (13 feet) along Chile’s coastline. By March 12, 2010, there had already been over 300 aftershocks from the quake....

Earthquake Rocks New Zealand

Where: Wellington, New Zealand July 16, 2009 : A powerful 7.8-magnitude earthquake occurred in New Zealand’s South Island, near the city of Invercargill. No one was injured, nor was there any major damage. The region, South Westland, is almost uninhabited, and the quake was centred 35 kilometres under the sea off its coast. An earthquake of this intensity could have caused destruction on a massive scale had it struck near the heavily populated capital city of Wellington....

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