One earthquake leads to another, even if the places where they happen are far apart in both time and place. The massive, 8.8-magnitude earthquake that struck Chile Feb. 27 occurred in an offshore zone that was under increased stress caused by a 1960 quake of magnitude 9.5. Also, The massive 8.8 earthquake may have changed the entire Earth’s rotation and shortened the length of days on our planet.

The quake, the seventh strongest earthquake in recorded history, should have shortened the length of an Earth day by 1.26 milliseconds, according to NASA’s Richard Gross. Other NASA officials say that “Perhaps more impressive is how much the quake shifted Earth’s axis.”
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Besides the threat to the West Coast of the US, there could be more earthquakes on the way to the Caribbean in the near future, and not just aftershocks either.
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UPDATE: Warning from CA Senator – The quake in Haiti didn’t generate a tsunami, but we could be due for one right here in the US. There are only 2 places in the US where an earthquake could generate a gigantic wave of this type, and new studies show a quake in one of these could happen very soon.

There is an underwater fault almost 700 miles long called the Cascadia subduction zone that runs 50 miles off the coast from California to Vancouver Island in Canada that has been the source of 4 huge earthquakes in the last 1,600 years.In LiveScience.com, Robin Lloyd quotes geologist Brian Atwater of the USGS as saying, “People need to know it could happen.”
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No one in Haiti saw it coming because quakes in the Caribbean are hard to predict since most of the tectonic plate is below sea level.

Geoscientist Michele Cooke says, “This earthquake [was] not unexpected, which increases the tragedy of our current situation. We can only access the active faults where they are exposed on the islands.” This is in sharp contrast with the San Andreas Fault in California, where monitoring equipment is in place on both sides of the plate boundary along its entire length.
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