A 30 million tonne block of ice sheared off a New Zealand glacier just minutes after a violent earthquake devastated the city of Christchurch, officials said Wednesday.
Earth Sciences
Feb 23, 2011
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A major 7.9-magnitude earthquake has shaken the South Pacific nation of Tonga and sending people in low lying areas of Fiji fleeing for higher ground after a tsunami warning, according to officials.
Earth Sciences
Mar 20, 2009
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Central Chile faces increased risk of a very large earthquake close to the site of last February's 8.8-magnitude temblor that killed 520 people and cost 30 billion dollars, scientists said on Sunday.
Earth Sciences
Jan 30, 2011
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Three major earthquakes seem to have occurred in northern Japan before it was hit in March 2011 by a massive quake and tsunami, researchers said Wednesday based on new evidence.
Earth Sciences
Apr 25, 2012
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Massive earthquakes can cause distant volcanoes to sink, according to research in Japan and Chile published on Sunday.
Earth Sciences
Jun 30, 2013
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Scientists are taking a trip back to the Byzantine Empire to examine whether future climate change could increase the chances of a pandemic such as the bubonic plague.
Earth Sciences
Jul 10, 2012
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Pandas living in a reserve near the epicentre of China's weekend quake clambered up trees in panic as their forest home was jolted, but none were injured, officials said Monday.
Plants & Animals
Apr 22, 2013
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In an earthquake, ground motion is the result of waves emitted when the two sides of a fault move—or slip—rapidly past each other, with an average relative speed of about three feet per second. Not all fault segments ...
Earth Sciences
Jan 9, 2013
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Data produced by internet users can help to speed up the detection of earthquakes. Fast and accurate information is essential in the case of earthquakes: Epicentre location, depth and magnitude are minimum requirements to ...
Earth Sciences
Apr 3, 2019
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A 6.1 magnitude quake hit the Philippines region early Thursday, US scientists said, but no tsunami warning was immediately issued.
Earth Sciences
Jan 27, 2010
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The epicenter or epicentre (pronounced /ˈɛpɪsɛntər/) is the point on the Earth's surface that is directly above the hypocenter or focus, the point where an earthquake or underground explosion originates. The word derives from the New Latin noun epicentrum, the latinisation of the ancient Greek adjective ἐπίκεντρος (epikentros), "occupying a cardinal point, situated on a centre", from ἐπί (epi) "on, upon, at" and κέντρον (kentron) "centre".
In the case of earthquakes, the epicenter is directly above the point where the fault begins to rupture, and in most cases, it is the area of greatest damage. However, in larger events, the length of the fault rupture is much longer, and damage can be spread across the rupture zone. For example, in the magnitude 7.9, 2002 Denali earthquake in Alaska, the epicenter was at the western end of the rupture, but the greatest damage occurred about 330 km away at the eastern end of the rupture zone.
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