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I've been searching news items looking for earthquake and tremor related items. Is it just me or are these seismic events connected somehow to the magnitude 9.0 quake that caused the devastating tsunami in SE Asia?

Obviously, I'm not a geological expert on such things and perhaps this number of earthquakes around the globe is normal. However, I do know that the Richter scale used to max out at 9.0. It has since been revised to 9.5 as the maximum.

Also, the fact that scientists are now saying this quake caused the Earth to speed up and wobble more on it's axis, indicates the effects a quake of this size can have.

Below the fold are the additional quakes and tremors I've managed to discover through my searching.

1. Quake jolts Masjed Soleyman, Iran

Dec. 29 4:50 GMT Richter scale: 3.6

2. Eight quakes rock tsunami-hit Andaman and Nicobar Islands
Dec. 29
19:20 GMT Richter scale: 5.1
15:40 GMT Richter scale: 5.0
07:10 GMT Richter scale: 5.7
07:21 GMT Richter scale: 6.1
11:27 GMT Richter scale: 5.8
07:44 GMT Richter scale: 5.4
12:00 GMT Richter scale: 5.1
12:02 GMT Richter scale: 5.2

3. Earthquake's tremor felt in Oklahoma

4. 4.6 magnitude tremor rocks Ilocos province

Dec. 28 Richter scale: 4.6
Dec. 27 Two tremors, each around 3.0 on the Richter scale.

5. Moderate tremor jolts central Japan
Dec. 28 09:30 GMT Richter scale: 4.9
Article says this tremor has nothing to do with the tsunami related quake. OK. I'm still putting it on my list!

Dec. 28 "As RIA Novosti was told on Tuesday at the Kamchatka experimental-methodological seismologic expedition, a column of gas and ashes rose to such a height at 12.39 Moscow time. The height of the ejection above sea level exceeded 5,000 m."
This was the spot of a 9.0 Richter earthquake in 1952. See here for more with a map.

7. Earthquake kills one in southwest China province

Dec. 26 Richter scale: 5.0

8. Massive quake hits off Tasmania

Dec. 23 01:59 GMT Richter scale: 8.1

These are the ones I found, there could be more. If you know of others, let me know and I'll include them in the list.

A poster below pointed me in the direction of this site, very cool map showing geographically exactly what I'm talking about but with far more than 8 instances! Check it out: Recent World Earthquake Activity

Originally posted to jbalazs on Wed Dec 29, 2004 at 03:49 PM PST.

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Comment Preferences

  •  Tip Jar n/t (3.83)

    Canadians care too...

    by jbalazs on Wed Dec 29, 2004 at 03:40:59 PM PST

    •  related? (none)
      I have often felt the same thing. I notice that when one earthquake happens, another large one seems to occur, or a volcanoe erupts within a few days, usually half-way around the world. I always hear the tag-line "they are unrelated events", but the coincidence always makes me wonder too.

      "The only thing we have to fear is fear itself." - FDR

      by Vitarai on Wed Dec 29, 2004 at 03:54:51 PM PST

      [ Parent ]

  •  This remark (none)
    Also, the fact that scientists are now saying this quake caused the Earth to speed up and wobble more on it's axis, indicates the effects a quake of this size can have.

    Strikes me as being on really shaky ground.

    Yeah, there's a lot of energy released.  But I'm having real trouble imagining how it could change the angular velocity of the planet.  There's nothing external that it could push on.  And the shape of the planet isn't altered, so it's not like a dancer or ice skater doing a spin and pulling arms in... and speeding up.

    O it is excellent to have a giant's strength; but it is tyrannous To use it like a giant--Shakespeare, Measure for Measure, Act II

    by ogre on Wed Dec 29, 2004 at 03:52:07 PM PST

  •  Yunan Province, China (none)
    I recall seeing a story on Monday about an earthquake in Yunan Province. While the earthquake was large, it was in a largely uninhabited area. Deaths and casualties were minimal.


  •  8.2 off the coast of Antarctica struck 12/23 (none)
    I read about this when it first happened but haven't seen it mentioned since.

    Tikkun Olam: Heal the world.

    by diamondpen on Wed Dec 29, 2004 at 04:15:58 PM PST

  •  8.1 earlier along same faultline... (none)
    According to this IndependentMedia.TV report (warning, possible conspiracy included), there was an 8.1 quake two days earlier south of Tasmania.

    Earthquakes often occur in clusters. It is not improbable that the 8.1 quake on the 24th set the stage for the 9.0 quake on the 26th; it was along the same faultline, albeit quite a distance away.

    The article discusses the possibilities of corporate action initiating the quake; if so, we can probably thank the corporations for doing so - in 5-10 years, this would have been a 9.2 or 9.3 with an even denser population and wider area of effect.

    Additionally, the USGS site for the disaster has maps of the dozens of quakes following the 9.0 event of the 26th.

  •  It's been a while... (none)
    ... but I've had opportunity to listen to some of the people who know a hell of a lot about earthquakes, over the years.

    Clustering of quakes is real, of course, in the form of aftershocks, but surprisingly enough it seems to be only recently that scientists have been taking seriously the notion that a quake on one fault can produce sympathetic quakes on other, "conjugate" faults.  The 6.4 Big Bear quake in '92 (Southern California) is now widely considered to be an aftershock of the 7.3 Landers earthquake, three hours earlier.  Landers and Big Bear are quite a ways apart, but the movement of quakes that large affect a large area. (I was in Las Vegas that morning, and both were pretty alarming in their intensity, even that far away.)

    I recall distinctly, in the scientific aftermath, that the notion that you could have an "aftershock" (though I much prefer the semantic notion of "sympathetic earthquake", myself) that was on a completely different fault, with completely different orientation, was new, and scientists were first saying the two quakes were coincidental... which goes to show how rapidly our understanding of quakes is progressing, but how rudimentary it still is.  I think -- and perhaps someone can correct me if I am wrong -- that the Landers/BigBear quakes were in fact the first to really provide solid evidence of the notion of conjugate quakes.

    Having said all that: people have observed that, worldwide, it often seems that a large earthquake somewhere in the world will be followed by large quakes elsewhere in the world, but as far as I know -- my knowledge is about ten years old, at this point -- it's still mostly speculation as to whether that's coincidental or actually causal.

    The pattern of aftershocks via the webindia link seem to be pretty typical.  I'm amazed they haven't had any larger than 6.1, personally, and it may yet happen.

    I imagine almost all of the scientists will tell you that the rest of the events... Japan, Kamchatka, Iran, etc... are almost certainly completely independent.  There are a heck of a lot of earthquakes on those areas, we're just usually not paying attention on a global scale.  Quakes on one fault certainly affect other, nearby faults, but the effect diminishes rapidly with distance from the epicenter -- I think if the effect were that pronounced, as far away as Japan, etc., scientists would have definitely demonstrated larger patterns by now.

    Don't know how helpful or interesting any of that was. A caveat; again, it's been about ten years, so take all this with a grain of salt.

  •  Thanks for the link... (none)
    to the Indepedent TV article. Scary stuff. What our government and corporations do in virtual secrecy, under the radar (literally underwater here) so to speak, ought to be illegal, yes?

    Shouldn't the public have a say into how our oceans are treated, managed?

    Conspiracy or no conspiracy, the virtually secret testing  ought to be halted while the effects on marine life are studied. Didn't environmental groups sue over things like this? I wonder if Greenpeace has commented on the testing?

    •  NP (none)
      I agree - the practice of using sonic arrays of this magnitude is unconscionable (sp?) Unfortunately, if they're operating in international waters, there is little any country can do to touch them. And of course we have a number of governments right now who are more interested in exploitation than in conservation, so it's not like we're going to pull the ships' registry or something...
      •  I think it is a subject though, (none)
        that might garner the interests of many thousands around the globe. If an action may harm individuals and marine life, threaten the health of the ocean, though it is practiced in international waters, it could be made illegal, no?

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