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 doesnt 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.
LOL, cause I knew you would respond...lol!
I realize it is because of the calibration setting but...I just wonder why, when that particular recorder captured other S waves from the few bigger quakes recently.
Thanks for you imput, really!
Check out the activity tonight at at the YMR site. Looks like there may be some harmonics, but there is not a lot of activity at the other sites. Looks fairly isolated.
Mom Md, good catch.
At your prompting I took a look at the other webicorders(I did note the activity on the YMR earlier) and yes it is strange the amount of feedback going on. Almost every recorder has responses. Indeed there are harmonic signatures in many of the webicorders.
Interesting for that has not been the case in the past among the recorders, only when there was a certified quake.
Steve, what do you think?
bttt
Thanks for the ping. Interesting...
second thought that could be a geyser.
Sowin on the mountain
Reapin in the valley
You gonna reap just what you sow....
God give Noah
the Rainbow Sign
Won’t be Water Be fire next time...
(Ramblin Jack Elliott)
Shortly after 12:01 on the YPK station recorded it best.
http://www.quake.utah.edu/helicorder/ypk_webi.htm
Few things to note, since it appeared on all the webicorders this was not a localized event i.e. radio influence, traffic or geyser.
Also, note how each webicorder is set up to record such and event, quite the difference.
There were no large earthquakes recorded elsewhere in the world that remotely would match up to this being an Long duration S/Wave.
I am one hundred percent convinced this was a small harmonic event.
sure looks like it
both ends of the valley are acting up right now it seems.
A huge harmonic tremor just hit south of Salt lake City!
http://www.quake.utah.edu/helicorder/sru_webi.htm
Steve, by the way found this for you tonight!
enjoy!
http://volcanoes.usgs.gov/yvo/activity/monitoring/deformation.php
http://www.uusatrg.utah.edu/ts_ysrp.html
Easy to understand now the tectonics behind such a swarm.
Running from a line from Old Faithful, the elevation has risen dramatically, while just a few miles away, from a line north from Madison the area has subsided.
Good stuff right here!
I posted a few links tonight above you might find interesting.
Subsiding;:
Madison
http://www.uusatrg.utah.edu/TS_YSRP/p711.html
Norris Junction
http://www.uusatrg.utah.edu/TS_YSRP/nrwy.html
Elevating station within 35 miles or closer.
Old Faithful
http://www.uusatrg.utah.edu/TS_YSRP/ofw2.html
Hayden Valley
http://www.uusatrg.utah.edu/TS_YSRP/hvwy.html
YNP Canyon
http://www.uusatrg.utah.edu/TS_YSRP/p716.html
Darn when the swarm was going on I wish I would have had this information on hand...lol
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