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Originally posted by rentingspace
Where TA go?
Would like to get your take on the EQ events on the 422630 charts (or non-eq events as they may be).
I come home from work and look to see the days latest analysis
Originally posted by BlueTriangle
I think it's kind of pointless to even prepare for the eminent Yellowstone eruption. Based on the reading I've done and several documentaries I've watched...an eruption will be a near extinction event. Anyone within a few hundred miles is dead quickly. The entire continental US will be under several feet of ash and is doomed. The entire world will experience nuclear winter and a good portion of the population will die off as a result.
There's no way to properly prepare for such an event short of evacuating the entire continent. That seems a little extreme to prepare for an event that could happen tomorrow...or 500,000 years from now.
Renewed magmatic activity has produced voluminous lavas in the Yellowstone caldera since approximately 150 thousand years ago, perhaps even indicating a fourth volcanic cycle. Following emplacement of a large rhyolitic lava flow in the western ring-fracture zone, renewed uplift of the resurgent dome occurred, reflecting insurgence of magma into the caldera system. Since that time, voluminous rhyolitic lavas (several individual flows exceeding 50 cubic kilometers) have filled the central part of the caldera and overflowed its western rim. These lavas were emplaced in three major episodes at approximately 150 thousand years ago, 110 thousand years ago, and 70 thousand years ago, each time erupting from both the western and eastern sides of the western ring-fracture zone to form the Madison and Central plateaus, respectively. The aggregate volume of these lavas is approximately 1,000 cubic kilometers. Deformation, probably related to continued magmatic activity beneath the Yellowstone caldera, continues with caldera-wide uplift and subsidence at rates as high as 2 centimeters per year. .
Originally posted by rentingspace
Thanks TA. I can't find that page with the lines that look like pipe cleaners. So I will throw out an uninformed opinion.
At least I learned something tonight and probably made a geologist or two laugh their heads off at my 2 hours of research BS. But hey, TA did ask me to take a crack at it so there it is.
Originally posted by rentingspace
So if those mining operations are being felt in YS then that makes me want to ask if that is such a good idea given the risk YS represents. Also, I sure hope they aren't anywhere near the chimney.
Information Statement
Over the past 48 hours, seismic activity at Redoubt Volcano has increased markedly. This has taken the form of periodic tremor bursts that are most visible on the two seismic stations closest to the summit. Beginning at 00:58 AKT (9:58 UTC) this morning, tremor became sustained and its amplitude increased markedly. AVO raised the Aviation Color Code to ORANGE and the Alert Level to WATCH this morning at 2:09 AKT (11:09 UTC).
This activity could be precursory to an eruption, perhaps within hours to days. A further increase in seismicity is expected to accompany an eruption. There is no indication that the volcano is currently erupting.
At this time, clouds obscure the volcano in satellite views, but NEXRAD weather radar data show no signs eruptive activity. AVO has received no recent observer reports. Staff are currently monitoring the volcano 24 hours a day.
AVO raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of SO2, H2S, and CO2; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity. These observations reflected a change in the volcano’s hydrothermal system, possibly associated with an influx of new magma beneath the volcano. It is also possible that the change was related to the development of a new pathway of heated fluids rising from magma intruded during the 1989-90 eruption.