Posted on 02/02/2010 7:06:54 PM PST by Steve Van Doorn
Since January 17, 2010 Yellowstone has had the second largest swarm ever recorded. The swarms have been steady at about 10 miles in depth and they have subsided a few days ago.
In the past two days the depth has raised up to around 7 miles and in the past couple hours quakes vastly increased.
http://www.quake.utah.edu/helicorder/ymr_webi.htm
http://www.seis.utah.edu/req2webdir/recenteqs/Maps/111-44.html
Remember this doesn’t mean we will see an eruption and it most likely means a normal volcano. It is very unlikely we will see a caldera eruption.
But these changes are significant and cannot be over looked
Some history:
Since the most recent giant caldera-forming eruption, 640,000 years ago, approximately 80 relatively nonexplosive eruptions have occurred. Of these eruptions, at least 27 were rhyolite lava flows in the caldera, 13 were rhyolite lava flows outside the caldera and 40 were basalt vents outside the caldera. Some of the eruptions were approximately the size of the devastating 1991 Pinatubo eruption in the Philippines, and several were much larger. The most recent volcanic eruption at Yellowstone, a lava flow on the Pitchstone Plateau, occurred 70,000 years ago.
3.4 on the juan de fuca(gorda)plate.
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/nc71364405.php
THX THX.
http://ees2.geo.rpi.edu/rob/www/gps/g0026.html
I am still processing this information, but initially my thoughts would be that the Cascadia Subduction Zone would not be seriously in jeopardy right now. However further north in the Explorer Plate might well just be the obvious loser in this plate tectonic battle going on right now...lol
Subject to change but that is how I initially thought.
THX MUCH.
Will check it out.
Blessings,
Least from those 2004 plots it looks like it’s still rotating clockwise, no?
THANKS THANKS.
WILL CHECK IT OUT.
Was there really a quake in Hawaii?
Certainly true in other volcanic eruptions but more so true here. What happens is the warming sub-base is cooled by the melting glacier on top of it. When the active magma throat is in a period of ascent, the resulting quakes that are realized is nothing more than rocks and tiny faults giving way and cracking under the pressure of magmatic influences.
When this motion ebbs and retreats which is normal, the area that was heated is now cooled, and even supercooled here because of the glacier capping. This unlike other volcanoes that just have to deal with attitudinal temperatures and perhaps the white stuff, causes the cracks to seal tighter than normal. Truly providing the perfect air tight cover.
Leading to calamities not normally seen.
That is not to say though, that this just might have been the last of this present cycle and things will return to background. However I would argue that you can indeed discern a magma chamber that has been created on that 3-d model. If that is the case then one would suspect that the magma intrusion is an ongoing effort with plenty of forcing elements still in play.
my thoughts, until then though I want to keep researching the Pacific Northwest Fault and subduction zones...lol!
No, he was referring to the threatened tsunami.
If I feel threatened by my next-door neighbor, will Barry 0 pay my insurance premiums?
hmmmmm
Thx.
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.php
If you note on this gentleman's 3-D imaging, the fissure broke through at the north side of the location of the second swarm. There is still the main area of earthquakes that is to the south and to that area's left(under the glacier) that is still experiencing some quaking.
interesting. thx.
Very interesting. Thx.
quake tonight albeit small but along the Cascadia Subduction Zone(CSZ).
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/uw03220347.php#details
I would without hesitation consider this one a forerunner.
Interesting.
What places it in that category for you?
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