Here is some information that might help with different earthquake measurements....
Locating and measuring earthquakesEarthquakes are recorded by a seismic network. Each seismic station in the network measures the movement of the ground at that site.
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Earthquakes produce two main types of waves - the P-wave (a compressional wave), and the S-wave (a shear wave). The S-wave is slower but larger than the P-wave and does most of the damage.
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Knowing how fast seismic waves travel through the earth, seismologists can calculate the time when the earthquake occurred and its location by comparing the times when shaking was recorded at several stations.
This process used to take almost an hour when done manually. Now computers determine this information automatically within minutes. Within a few more hours the shape and location
of the entire portion of the fault that moved can be calculated.
How big was the earthquake?Why do scientists have problems coming up with a simple answer to this simple question? Many people have felt this frustration after earthquakes, as seismologists often seem to contradict one another. In fact, earthquakes are very complex. Measuring their size is something like trying to determine the "size" of an abstract modern sculpture with only one use of a tape measure. Which dimension do you measure?
Magnitude is the most common way of describing an earthquake's size. In the 1930's, Beno Gutenberg and Charles Richter at the California Institute of Technology developed a method to describe all sizes of earthquakes using a small range of numbers
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A magnitude 6.0 earthquake has about 32 times more energy than a magnitude 5.0 and about 1,000 times more energy than a magnitude 4.0 earthquake. This does not mean there will be 1,000 times more shaking at your home. A bigger earthquake will last longer and release its energy over a much larger area.
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Seismologists have since developed a new measurement of earthquake size, called moment magnitude. Moment is a physical quantity more closely related to the total energy released in the earthquake than the Richter magnitude.
The full article is here: [
link to www.earthquakecountry.org]
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of course it will cause massive earthquakes along Andes Chain for example in Colombia ,Venezuela,Argentina and more
