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Rainier now too?

JackNJackN <font color=#99FF99>Lightwave Alien</font>
in Zocalo v2.0
[URL=http://www.cnn.com/2004/US/11/10/ranier.ap/index.html]EQuake Mt Rainier[/URL]

A 3.2 Magnitude only 1 mile below the center of the mountain?

Mt. St. Helens had magnitude 3 earthquakes before her recent dome building eruptions.

hmmm... I wonder if we have a mantle plume on the rise under the pacific NorthWest subduction zone...

I remember the Seattle area had an offshore Tectonic quake about 10 miles down a year or so ago...

Comments

  • AkrovahAkrovah Ranger
    jesus, the planet must be gettin ready to blow apart or something. Maybe those rumors about the west coast sinking into the ocean are true.
  • shadow boxershadow boxer The Finger Painter & Master Ranter
    I think Mah Nature is getting out the big stick to give her kids a sound thrashing...

    ...one particular species needs taking down a peg or two.

    Very very few of us remember daily that we depend on her for our very existence.
  • Random ChaosRandom Chaos Actually Carefully-selected Order in disguise
    Yeah - heard about that at Rainier. Hasn't been any rumbling since then...but if you're in Tacoma you better pay attention.

    They don't think it will ammount to anything...but this is the worst series of earthquakes at Rainier in about 3 years. If it continues...it will be the worst in a lot longer.

    [url]http://vulcan.wr.usgs.gov/Volcanoes/Rainier/Publications/FS065-97/FS065-97_map.pdf[/url]
  • Random ChaosRandom Chaos Actually Carefully-selected Order in disguise
    Well...I just went cruising arround PNSN - Mt. Hood had an earthquake swarm about a month ago - the biggest swarm in about 2 years. A couple others have had a couple earthquake recently...but thats normal. Wonder if JackN might be right.
  • JackNJackN <font color=#99FF99>Lightwave Alien</font>
    [QUOTE][i]Originally posted by Random Chaos [/i]
    [B]Well...I just went cruising arround PNSN - Mt. Hood had an earthquake swarm about a month ago - the biggest swarm in about 2 years. A couple others have had a couple earthquake recently...but thats normal. Wonder if JackN might be right. [/B][/QUOTE]

    Well, they do say that almost all these volcanoes in the Cascade and Sierra ranges share a lateral conduit several miles down that follows the crumple of these mountain ranges.

    Looking at the larger picture of what might be going on up and down the continent seems to me to be a small raise in batholithic pressures across the board. Kinda like a small wave lapping the shore.

    I just hope if this is the case that it doesn't upset the delicate balance of pressure inside the magma chambers of some of these mountians.

    I keep thinking in my mind what it must have been like in the months and years before Mt. Mazama collapsed into Crater Lake (and that's only a small one really).

    Hey, anyone heard anything about the Bartsow Bulge in recent years? That one had some people worried a while back.

    :)
  • TyvarTyvar Next best thing to a St. Bernard
    well looks like property values in the northwest are gonna drop :D

    And actually Hood acting up isnt that surprising if there is a build up of pressure deep it probably will cause hood to pop, she's overdue and probably has a healthy amount of pressure builtup already.

    and St. Helens is in a SERIOUS rebuilding mode. At current rate of dome growth the mountain will be back to its previous hight in a decade. :D
  • croxiscroxis I am the walrus
    THe risk with Rainier is not so much eruption but of landsides. Rainier's sturucture is HIGHLY unstable. The right earthquake at the right spot could cause half the mountain to collaps.

    What happened with St Helens was an earthquake causes a massive landslide. By removing the pressure from all that mass the magma bursted upwards very very fast, causing the 1980 eruption. The same thing could happen again.
  • E.TE.T Quote-o-matic
    [QUOTE][i]Originally posted by croxis [/i]
    [B]THe risk with Rainier is not so much eruption but of landsides. Rainier's sturucture is HIGHLY unstable. The right earthquake at the right spot could cause half the mountain to collaps.

    What happened with St Helens was an earthquake causes a massive landslide. By removing the pressure from all that mass the magma bursted upwards very very fast, causing the 1980 eruption. The same thing could happen again. [/B][/QUOTE]Well, actually lansdslide caused lateral "explosion".

    This is very good stuff:
    [url=http://vulcan.wr.usgs.gov/Volcanoes/MSH/May18/MSHThisWeek/framework.html]Events Leading Up to the May 18, 1980 Eruption[/url]
    [url]http://vulcan.wr.usgs.gov/Volcanoes/MSH/May18/summary_may18_eruption.html[/url]
    Energy release: 24 megatons thermal energy (7 by blast, rest through release of heat)


    BTW, here's some data what Mazama might have looked before eruption.
    [url]https://www.uwsp.edu/geo/projects/geoweb/participants/dutch/VTrips/CraterLake.HTM[/url]
  • BekennBekenn Sinclair's Duck
    [QUOTE][i]Originally posted by shadow boxer [/i]
    [B]I think Mah Nature is getting out the big stick to give her kids a sound thrashing...

    ...one particular species needs taking down a peg or two.[/B][/QUOTE]

    Yeah, those ants need to be taught a lesson.
  • JackNJackN <font color=#99FF99>Lightwave Alien</font>
    [QUOTE][i]Originally posted by Bekenn [/i]
    [B]Yeah, those ants need to be taught a lesson. [/B][/QUOTE]

    heh... I'm still reeling from being pronounced a fucktard...

    :p
  • E.TE.T Quote-o-matic
    [QUOTE][i]Originally posted by Bekenn [/i]
    [B]Yeah, those ants...[/B][/QUOTE]
    Well, maybe more propably viruses... or cancer cells.
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