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#1
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Ready for more obscured observing?
Remembering back to the 1980's when one of these cruddied up the sky
for over a year. Nice purple sunsets though. http://www.cnn.com/2009/WORLD/asiapc...yon/index.html |
#2
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Ready for more obscured observing?
On Dec 15, 4:32*pm, Rich wrote:
Remembering back to the 1980's when one of these cruddied up the sky for over a year. *Nice purple sunsets though. http://www.cnn.com/2009/WORLD/asiapc....volcano.mayon... Oh, no, this is terrible news for the people who live there. But it reminds me of encountering an article about how the plume under Yellowstone Park was found to be larger than thought. And the last few eruptions were noted. Fortunately, it looks like the timing is such that although the next one is (relatively) imminent, "imminent" means most likely in the year 60,000 A.D.. John Savard |
#3
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Ready for more obscured observing?
On 12/15/2009 8:36 PM, Quadibloc wrote:
On Dec 15, 4:32 pm, Rich wrote: Remembering back to the 1980's when one of these cruddied up the sky for over a year. Nice purple sunsets though. http://www.cnn.com/2009/WORLD/asiapc....volcano.mayon... Oh, no, this is terrible news for the people who live there. But it reminds me of encountering an article about how the plume under Yellowstone Park was found to be larger than thought. And the last few eruptions were noted. Fortunately, it looks like the timing is such that although the next one is (relatively) imminent, "imminent" means most likely in the year 60,000 A.D.. Given its prior eruption cycles (from the USGS), the next supervolcano eruption is overdue and could happen tomorrow or next week -- Christmas could be "white" not due to snow but due to volcanic ash. Some fun stuff: http://www.youtube.com/watch?v=Ap_YUwdiy8I http://www.youtube.com/watch?v=VR1bg_Yf0T4 http://store.discovery.com/detail.php?p=84915 http://www.aceshowbiz.com/video/download/00010790/ http://en.wikipedia.org/wiki/Yellowstone_Caldera http://geology.com/news/2009/the-next-yellowstone-eruption.shtml http://vulcan.wr.usgs.gov/Volcanoes/Yellowstone/description_yellowstone.html http://www.cnn.com/video/#/video/us/2009/07/18/wolf.yellowstone.quakes.cnn |
#4
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Ready for more obscured observing?
On Dec 16, 7:12*am, Thad Floryan wrote:
Given its prior eruption cycles (from the USGS), the next supervolcano eruption is overdue and could happen tomorrow or next week -- Christmas could be "white" not due to snow but due to volcanic ash. Stop complaining! Visibility is down to 50 yards here and it's not even Christmas yet! Copenhagen global warming debacle disrupted by heavy snowfall! God may have had a hand. In throwing snowballs at Berlus' cronies. ;-) |
#5
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Ready for more obscured observing?
On Dec 15, 11:12*pm, Thad Floryan wrote:
On 12/15/2009 8:36 PM, Quadibloc wrote: Fortunately, it looks like the timing is such that although the next one is (relatively) imminent, "imminent" means most likely in the year 60,000 A.D.. Given its prior eruption cycles (from the USGS), the next supervolcano eruption is overdue and could happen tomorrow or next week -- Christmas could be "white" not due to snow but due to volcanic ash. I was thinking of this recent news story: http://www.sciencedaily.com/releases...1214075225.htm It gave the dates as 2.05 mya, 1.3 mya, and 642,000 years ago. So the last two intervals were 750,000 years and 658,000 years. Ah, my mental arithmetic was off; maybe the year 8,000 A.D.. John Savard |
#6
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Ready for more obscured observing?
On 12/16/2009 5:05 AM, Quadibloc wrote:
On Dec 15, 11:12 pm, Thad Floryan wrote: On 12/15/2009 8:36 PM, Quadibloc wrote: Fortunately, it looks like the timing is such that although the next one is (relatively) imminent, "imminent" means most likely in the year 60,000 A.D.. Given its prior eruption cycles (from the USGS), the next supervolcano eruption is overdue and could happen tomorrow or next week -- Christmas could be "white" not due to snow but due to volcanic ash. I was thinking of this recent news story: http://www.sciencedaily.com/releases...1214075225.htm It gave the dates as 2.05 mya, 1.3 mya, and 642,000 years ago. So the last two intervals were 750,000 years and 658,000 years. Ah, my mental arithmetic was off; maybe the year 8,000 A.D.. John Savard Hmmm, seems to be a number of different periods and cycles depending whom one references. For example, he http://geology.com/usgs/yellowstone-volcano/ it's stated 2.2 MYA and 640,000 YA for the last supervolcano eruptions and 70,000 years ago for the Pitchstone event. Three videos there by the USGS scientist in charge of the volcano observatory have more information. At the USGS page he http://vulcan.wr.usgs.gov/Volcanoes/Yellowstone/description_yellowstone.html the last 3 supervolcano events were 2 million, 1.2 million and 600,000 years ago, and the last "normal" eruption was 70,000 years ago. Further down the page they write 2.0, 1.3 and 0.6 million years ago. Obviously some drift. :-) Regardless of those numbers, there's been a lot of seismic activity in that area recently with land rising/falling in 10s of cm. That's enough to convince me to stay at least 750 miles Westward of Yellowstone for the rest of my life. I'll take California's earthquakes anyday over the hurricanes, typhoons, tornados and volcanos that plague elsewhere on the planet since with a quake there's no advance warning (and no anxiety or stress), bada boom the quake happens for (usually) 10-30 seconds, then back to whatever one was doing before the quake (unless one was driving on a bridge or in a tunnel during the quake). |
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