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Indonesia May Face a "Supercycle" of Devastating Earthquakes

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posted on Oct, 1 2009 @ 09:26 AM
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A new study examined the growth records of coral reefs off the coast of Sumatra, and say they show evidence of repeated bursts of earthquakes that relieve pressure on the Sunda fault. A shock in 2007 may be the beginning of a new cycle, researchers say.

Says study coauthor Kerry Sieh: “If previous cycles are a reliable guide we can expect one or more very large west Sumatran earthquakes … within the next two decades”



In the study, published in Science, researchers looked at the growth patterns of coral reefs in the region over the past 700 years. When a quake occurs the seafloor rises up, effectively lowering the sea level so that shallow coral reefs are now above the surface. The reefs can’t grow upward, but their still submerged portions grow outward. Researchers found evidence of this growth pattern about every 200 years, and say the changes to the coral reefs in the region weren’t caused by one single giant earthquake.


Megathrust quake could hit Asia at any time


A new research has suggested that a devastating megathrust earthquake could occur at any time off the Indonesian island of Sumatra.



But, the researchers found that the 2007 quakes ruptured only a fraction of the area affected by the giant 1833 earthquake, indicating that a tectonic plate boundary can rupture in different patterns depending on local differences in stress



The results suggested that the 2007 events released only a quarter of the energy that had accumulated since 1833, leaving enough pent-up energy to trigger another giant earthquake at any time.


This is last year research, I missed this important article.
But the way I see it, if the energy is released in a chain gun event, we might avoid another giant one.

Note: The 2007 quake is not the giant quake that causes the Indian tsunami.

Related thread.
Earthquake Warning for Sumatra region; Big One Ahead
Mega-earthquake Risk For West Coast, US And Canada?

[edit on Thu, 1 Oct 09 by Jazzyguy]




posted on Oct, 1 2009 @ 03:49 PM
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I know this is off topic alittle. On the news it said San andreas might be expecting some earthquakes in the future??? Has anyone heard this??



posted on Oct, 1 2009 @ 07:03 PM
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reply to post by Maddogkull
 


Of course san andreas will be expecting an earthquake in the future. But what is the specific?



posted on Oct, 2 2009 @ 02:40 AM
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Pretty much any fault line on the planet will expect a quake at some point in the future!

170 years in a geological time period is less than a blink of an eye.

The Cascadia Fault has been expecting a Megathrust Quake for years too.



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