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Originally posted by brocktoon
Originally posted by Styrge
The mysterious light somebody spotted from TEPCO webcam footage is an awesome find! There is an another mechanism to produce visible light from radiation besides cherenkow radiation. When ions created by a heavy radiation source (all ionizing radiation ionizes the air) meet the electron rich surroundings and neutralize, they give off UV-rays. (about 10 eV in energy) These in turn cause luminescence in nearby atoms and molecules. (By displacin valence electrons witch subsequently drop back to their original orbits, giving of 1-3 eV visible light.) This is how the northern lights work. Red is the wavelenght for oxygen and blue comes from nitrogen - familiar also from electric arcs!
The other mysterious light seen way above the plant could be explained this way also (that the Fox news clip was about).
Thanks for pointing this out. Cherenkov radiation needs to travel through at least two mediums to be visible. All those glowing rods you see in pools would stop glowing the second you pulled them out of the water. It is a refraction trick, to put it simply, like a pencil that looks bent when partly submerged in water (only on a sub-atomic level). Take away the water, no refraction, no bent pencil, no blue glow.
Actually, the Australians are correct to be concerned. Because of this:
australia cross-equatorial bifurcation
This little-known atmospheric phenomena links Oz to the Northern Hemisphere by means of winds. It formed the plot for the movie
Energy Secretary Steven Chu said Friday that roughly 70 percent of the core of one reactor at the crippled Fukushima nuclear plant in Japan had suffered severe damage.
Mr. Chu cautioned that the figures were “more of a calculation”
Originally posted by LilFox
reply to post by silent thunder
And the reading where I am, Melbourne, Aus.. 0.23 µSv/hr
Originally posted by SFA437
For those claiming the matter leaking out the side of #4 is water or a water/debris slurry check out this video @ 1:22 - 1:26.
Water typically MOVES when it is on a vertical surface. Just sayin.....
Fuku HD Flyover
Originally posted by JustMike
reply to post by zenzen
Please forgive my slow reply. I'm struggling to keep up at the moment.
Briefly, the reason I would discount that magnitude 4.5 is simply because it's way too powerful. A 4.5 would release more energy than 21 Chernobyl explosions, or more than 18 MOAB bombs all going off at once in the same place. If that had happened at Daiichi, I expect there would be just a large crater in the ground and virtually no buildings standing at all within a radius of several hundred metres.
That set of seismo traces you linked to for the mag 4.5 quake event is very hard to read in detail because the time scale is so compacted. What I mean is that it's very difficult to see at what exact moment the P wave arrived, and how many seconds and fractions of seconds later it was when the S wave hit. Generally, to pick out the finer details of the arriving P wave then the S wave, it's much easier when the scale is "stretched" more. Seismologists have software that lets them zoom in on such traces and even study them in magnified sections a hundredth of a second long or less if they wish. There is a free product called GEE that you can download that lets you watch seismos and their traces of quakes virtually in real time and which also allows you to zoom in. I use it a lot and it's excellent.
Most organizations like USGS, GeoNet, EMSC and JMA, do provide near-real-time data but sometimes there can be lags or delays. They can also provide seismo and webicorder data in near-real-time, but to save going off topic too far I'll just say that one of the best ways to get more info about this is to visit the Quake Watch 2011 thread. Heaps of good info there. Puterman (one of our quake geeks) and TrueAmerican (another) also are mines of information and often post there. Puterman especially has links in his signature that will help a lot if there's anything you wish to track down or find out.
In summary and to stay on topic, I am fairly confident that the 11 a.m. event corresponds closely to the reported building #3 explosion time and also matches well in magnitude. The 11:11 am event is too powerful (thankfully)!
My friend...Green tea or black?
In Upper Ferntree Gully right now, (40k east of Melbourne, Australia,) It's 0.15µSv/hr outside, which is normal here. It's usually 0.16µSv/hr inside but right now it's 0.14µSv/hr inside.
And the lack of other short-lived isotopes — especially iodine-133 — indicates that the primary safety systems at Fukushima kicked in as planned during the earthquake and shut down fission in the reactors. Halting fission starts an atomic clock of sorts in which quickly decaying isotopes vanish within hours or days. Andreas Knecht of the University of Washington team said their Seattle detector can sense iodine-133 up to seven days after a reactor produces it, but has found none.
The detection of still another isotope, tellurium-132, offers a further clue about the source of radioactive emissions from Fukushima. Fuel rods sit in pools for months or years, releasing fewer and fewer different isotopes over time, and — unlike hotter fuel rods — they don’t produce tellurium-132. Spotting that isotope, as the detectors have, points to a damaged reactor core.
By putting these radioactive puzzle pieces together, the Seattle team was able to conclude in a paper published March 28 that fission in Fukushima’s three active cores was halted during the earthquake, and that the reactor cores launched radioactive debris into the air on clouds of steam shortly thereafter. www.washingtonpost.com...
A U.S. military barge carrying pure water (L) is towed by Japan Maritime Self-Defence Force Yard Tugboat No.79, near No.1 reactor of Tokyo Electric Power Co.'s Fukushima Daiichi Nuclear Power Plant in Fukushima Prefecture, in this photo taken March 31 and released by Japan's Defence Ministry April 1, 2011. Picture taken March 31, 2011.
Originally posted by Procharmo
Originally posted by apacheman
Darn, doesn't anyone know where the restrooms are?
Still can't find squat on the sewage system for that site.
I read somewhere possibly on this site. They use portacabins. They are all full.
The workers are having to squat over contaminated land till the roads are cleared and the toilets can be emptied.