Earthquake Magnitude 5.5 Struck Indonesia Wednesday, California and Philippines had quake movement
An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activityof an area refers to the frequency, type and size of earthquakes experienced over a period of time.
Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of October 2012), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.[1]
In a more recent article by guardianlv.com
Earthquake Magnitude 5.5 Struck Indonesia Wednesday, California and Philippines had quake movement
Jakarta, Indonesia – Earthquake measuring 5.5 in magnitude struck off the eastern part of Indonesia this Wednesday, according to the U.S. Geological Survey.
The quake occurred at approximately 4:00 p.m. local time, which translate to 1:00 A.M. PT. Jakarta is 15 hours ahead of Pacific Time.
Indonesia’s own Meteorology and Geophysics Agency initially reported a quake measuring a preliminary 6.3 magnitude quake, however they quickly realized their error.
More on this story at http://guardianlv.com/2012/11/earthquake-magnitude-5-5-struck-indonesia-wednesday-california-and-philippines-had-quake-movement/
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