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.
I’m an ecologist and work in storm water & flood mitigation.
Thanks. I needed cheering-up.
bflr
I understand but sometimes it’s worthwhile to be more diplomatic in your response.
bkmk
Never let a crisis go to waste.
This morning there was a moderate quake along the Cocos and Nazca plates. 4.8 to be exact.
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010thba.php#details
Map of the Tectonic Plates.
http://wpcontent.answers.com/wikipedia/commons/b/b4/Plate_tectonics_map.gif
Map of where quake was centered.
http://neic.usgs.gov/neis/bulletin/neic_thba_w.html
bump for later.
Sorry...
Science in many fields has become a secretive club like atmosphere much like the dark ages of the holy roman church were only the select few are privy to the communications of the latest findings and theories.
Case in point the science behind the Global warming theory. With the leaking of the emails it even more likely other sciences will be even more secretive then before.
I am NOT saying there is a conspiracy. I am saying ‘scientists’ has gone too far keeping there information to themselves. When the internet was relatively new they were more open with their information and now all an amateur can do is speculate with the little information that is available.
Do we really have to learn that the dark ages was not a good time for science all over again?
This is not at all true in regards to what is actually going on under Yellowstone. In fact, the hot spot has drifted under a stronger layer of crust and is deeper than it has been in the past. This greatly lessens the likely chances for a catastrophic Caldera type of eruption.
There may be smaller surface basalt flows like there have repeatedly been for millennium. They have occurred like clockwork through out the region. I have spent time there myself, touring these past flows. I also lived in the area for some time.
Sorry to rain on the knee jerker parade, but I'm sure you will soon find something else to feed your adrenaline addictions on.
The hot spot has always been drifting under a mountain and this part of the mountain is larger then before. If that is what you are referring to yes that is all true.
yes, there has been smaller basalt flows which I pointed out in my first post.
Calling a potential threat for what it is and telling people about the threat isn’t BS and only leads to scientists being more secretive about their information given to the public.
I totally understand why Stormer thinks we should keep our mouths shut I just don’t agree with keeping the public in the dark.
Remember Sir Isaac Newton was an armature bucking science.
See I give proof that this armchair armature is just an amateur
Somewhere on this thread, or perhaps the one right before you will read that indeed was conveyed, not only by me but others.
Wow, Freeperland could have used you then!
Namibia? wow Dude, kudos to ya!
the Caribbean late had a fault slip this afternoon.
4.6 along the the boundary of the north American plate.
Quake Map
http://neic.usgs.gov/neis/bulletin/neic_thck_l.html
Plate Map
http://www.oas.org/pgdm/document/BITC/papers/gibbs/gibb0201.gif
The most devastating types that have done the most damage are Megathrust variety. (usually 9.0 or larger) They create the closest wave frequency which does the most structural damage and creates the largest Tsunami's. (Not to be confused by landslide events like Lituya Bay.)
The 1964 Alaska Quake was so devastating because it was was a Subducted (Ocean floor) Megathrust of over 9.2. This explains the less than spectacular Tsunami hype that hit Hawaii last weekend.
Since I am a neophyte, I can get away with the liberty of ponderance and right now I using it liberally so:
The last few weeks, I have, not obsessively so but close, have been monitoring each and every swarm, and quake(even the swarm occurring in the north sea).
It was obvious to me that we were seeing much more in the way of major plate tremors than normal. Normal being the last few years because I believe that anything happening now is not out of the overall norm.
Anyways, once the California swarms in the LA area and the increase in quakes near Geysers California. The fact that Yellowstone had just ended it's most prolific one month period of quake action was also weighed heavily.
My thinking is that the tectonic Plates are moving at increase rates and this makes for some rather interesting times.
If you look at the major plate contact areas, to me the only ones that is ripe right now, not only because of the time interval between release but because of the motions involved, were the Cocos and the San Juan Fuca Plate.
Now the San Juan Fuca plate just experienced a large quake in January but it was more centered in an area called the Gorda plate which is at the southern extension of the Fuca and Cascadia zones.
Secondly that quake was a slip quake and not a subduction zone Mega-Thrust.
Given all of that and the historical nature of the CSZ, I would be very inclined to believe it has yet to react to this latest increase in Tectonic Plate movement.
That's where my thinking is at. Again from a very low-level armchair...lol
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