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Originally posted by kattraxx
Originally posted by Red Cloak
I also posted this in the other earthquake thread.
OK, I was finally able to get a hold of the earthquake scientist Jim Berkland, the scientist that was able to accurately predict the 1994 Northridge, California earthquake before it happened. I asked him about this issue and everything being said about it.
I was told the following (and PLEASE note that I am NOT trying to make a prediction, nor scare anyone, I'm just stating what he said):
"Based on the nature of the supermoon phase of the period in and around December 12th, 2008, and the relationship of the heavenly bodies' gravitational pull towards the mainly affected fault zones on the Earth, I am able to estimate that there is an 85% probability that a magnitude 8 plus megaquake or a series of magnitude 8 plus megaquakes will strike in the New Madrid fault zone like happened previously in the years 1811-1812. This means that within a period of time from December 12th to roughly 2-3 weeks after that there is an 85% chance that a megaquake or a series of megaquakes will hit in the Arkansas/Missouri New Madrid fault zone area."
How did you manage to reach Jim Berkland on vacation? I contacted Cal Orey and she posted Jim's latest forecast on the url below.
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As Jim Berkland 's biographer, good friend...I am going to say that this is a rumor. I do not believe he would have said an 8.0 quake would be the result this month. Look at his forecast. Once again, after posting the below post I will post Berkland's Dec. eq forecast. Also, he forecasts for 4 regions every month; he will make a MOSS prediction sometimes but I doubt that he forecasted such a quake/mag...He is gone till Dec. 19...so no way to know for sure. But I seriously doubt he'd predict a great quake in this manner. Oh, and working with him on The Man Who Predicts Earthquakes...he would never say "heavenly bodies'" or a "series of 8 plus megaquakes."
www.websitetoolbox.com...
Originally posted by JustMike
The real reason is very simple. As the USGS says on its website in the "glossary" section:
Sometimes when depth is poorly constrained by available seismic data, the location program will set the depth at a fixed value. For example, 33 km is often used as a default depth for earthquakes determined to be shallow, but whose depth is not satisfactorily determined by the data, whereas default depths of 5 or 10 km are often used in mid-continental areas and on mid-ocean ridges since earthquakes in these areas are usually shallower than 33 km.
In other words, if the data is not complete/accurate enough for the program to determine the depth, then it is auto-posted as 5, 10 or 33 km -- depending on where the quake occurs.
That's all there is to it. For a confirmation of the fact that quakes do in reality occur at a wider and statistically more reasonable spread of depths, I'd refer anyone interested to this article produced by Lindsay Lowe and Prof. Mark Helper of the University of Texas (Austin), which not only confirms that USGS uses default depths, but includes histograms to show both the "default" numbers of quakes and the "real" situation. (You have to scroll down about half-way to reach the relevant histograms.) For those who are pushed for time, maybe, here are the two histograms that illustrate this matter of "unrealistic" versus "realistic" quake depths:
With default depths:
Default depths removed:
(Both images from A GIS Interpretation of the Alaska-Aleutian Subduction Zone:Evidence for Segmentation and Topographic Effects by Lindsay A. Lowe and Prof. Mark Helper, University of Texas, Austin, 2005. Images reproduced for informational and educational purposes under fair-use provisions.)
As an aside to this, up to around ten days ago, nearly all quakes off the coast of Cal/PNW were posted at depths of 10 km. Now, the USGS is posting them at more precise depths (very few of which are near 10 km, in fact), which indicates that either the USGS has suddenly improved its location methodologies or else it has made an administrative decision to release more precise data to the public. The USGS is also now generally releasing wave-form data for quakes in the same region, which is something that has been distinctly lacking for several months. As this wave-form data is essential to determining quakes' magnitude and location, the USGS must have had it available, so the fact that this data is now being made available to the public means its release is a result of an administrative decision and not some form of technological advance.
pubs.usgs.gov...
Originally posted by chickenshoes
reply to post by Red Cloak
At the risk of looking silly:
How was that sarcasm? Apparently, either I'm sarcasm detecting impaired, or you need to improve your way of communicating.
I'm not trying to be rude, I truly don't understand, and if you could explain this, I'd really appreciate it
Originally posted by N. Tesla
will this thread be closed after the 15th? or will the
we should have a new years skirmish. or atleast the day before or something like that.
until Jan 5thish
and the webbot has a tendency to be more range-finding rather than date specific..
Originally posted by N. Tesla
reply to post by juniperberry
and i say your wrong. the op clearly said the dates are between the 10th and 15th of december. therefore this thread should be closed the 16th.
make a thread prolonging the date i will be happy to laugh again on the 6th of janurary and everyday in between
[edit on 12/14/2008 by N. Tesla]