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Seismological event

Seismological event

(OP)
Yesterday at about 7.05 MDT USGS telemetry data of sismographs all over the world showed an event that affected many sismographs all over the world, say 7.05 in Alaska, Beijing, Japan and Australia... what kind of event may cause such thing? Are there precedents?

The link is from a speculative site but the USGS seismoragph charts are not and you can follow the progress by links therein.

Furthermore ir looks as if some weaker repeater has appeared at about 1.00 MDT.

http://www.godlikeproductions.com/forum1/message1240786/pg1
 

RE: Seismological event

Biggest thing in North America lately was a 5.3 in Mexico, occurring at 23:16 UTC on November 1 (5:16 PM MDT).  

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_big.php

Check whether that's MDT or MST.  A few minutes before 7:05 AM Mountain STANDARD time on November 2, there was a 4.1, also in Mexico.

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.php

I didn't feel like watching much of your video, but it didn't look like anything out of the ordinary.

RE: Seismological event

The whole southern Pacific Plate, from Chile to Indonesia, has been inordinately active for the past year.

Something is happening...  But time only will tell what.  Just be prepared.

Mike McCann
MMC Engineering
Motto:  KISS
Motivation:  Don't ask

RE: Seismological event

(OP)
Thanks dgillette for examining the issue. I am not as fond as Newton on mysteries (I have read he had 90% of his library on them) but still show interest in what could be scarcely or badly explained things, that seem to be many.

The question is that the people in that forum seemed to think that almost at the same time the rings sounded it was thought in good part of USA and then by examination of other records, as well in many other parts of the world. Of course seismographs will register what happens at every moment where they are placed but the simultaneity on the noticeable events was startling. As stated above the phenomena seems not to have receded entirely, and I remain curious about what maybe the case. Here you have two sites with the named seismograms still showing at the moment weird simultaneity of the events irrespective of that the magnitude is much significative or not from the designers' viewpoint.

http://aslwww.cr.usgs.gov/Seismic_Data/heli2.shtml
http://aslwww.cr.usgs.gov/Seismic_Data/heli2_us.shtml

Yesterday (today already off-the chart) the simultaneity was clearer and the seismograms less populated. Maybe it is visible in the former links.

And the interesting point is (if there's any significance to the thing) what causes the simultaneity worldwide.

 

RE: Seismological event

Not sure I understand the question.  

P-wave velocity in the earth's mantle is over 10 km/sec (LA to NY in half of a second), so, for example, the 4.1 in Chiapas would be picked up at the various recording stations in the northern US very nearly simultaneously.  (The velocity is much lower in the crust.)

The Tucson and Albuquerque traces are almost identical, because they are so close together (500 km).

Remember that the squiggles you see are extremely small ground accelerations.

RE: Seismological event

(OP)
Thanks, dgillette, again, the same thing (small accelerations) was argued (both with merit) by someone at the other forum. But see that some registers were simultaneous enough to override even such P-wave speed. We can let this at this moment, anyway, since if something of more interest develops we surely will get to know.

RE: Seismological event

How does 10 km/sec = (LA to NY in half of a second)?

RE: Seismological event

Bad math.

RE: Seismological event

(OP)
In the interim I have thought about an scenario that might explain actual simultaneity of weak events: resonance. A geocentrical first natural mode of vibration on earth plus severe filtration of the other modes could show quite harmonical events anywhere. Even if not spherical or in other modes, echoes would tend to appear once filtered in the prevailing mode of vibration at the corresponding places for the vibration mode.

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