March 15 Radiation
March 18, 2011 in Uncategorized
Highest levels detected in Meguro area on the 15th was 36uR/hr, approx 3x normal background levels.
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by admin
by admin
March 18, 2011 in Uncategorized
Highest levels detected in Meguro area on the 15th was 36uR/hr, approx 3x normal background levels.
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Frank McMurtrey said on March 16, 2011
Thank you so much for setting up this website. I currently live in Tokyo and worry that we are not being informed by TEPCO the hourly/daily radiation levels in Tokyo.
On this site, you are using uR/hr. What level/number is a normal level? Is 12 uR/hr the normal level?
Thank you,
Frank
kneep said on March 17, 2011
Thanks so much for putting up this much needed site! Independent info regarding Tokyo radiation levels has been hard to come by until now.
admin said on March 17, 2011
The geiger in Meguro (5 mins to ebisu station) is an American rm-80 uploading data to server every min; Its on the 2nd floor on a window sill, window slightly open allowing airborne particles to enter. There is a page of specs but sensitivity; Alpha sensitivity: less than 2.5 MeV; 80% at 3.6 MeV. Beta sensitivity: 35% at 50 Kev; 95% at 300 Kev.
admin said on March 17, 2011
Server crashed again this morning, too many hits. Have turned off a few things to lighten load. Hopefully stays up, now to get that plot updating… Understand this is all amateur and hosting provider not too thrilled with svr traffic..
Concerned said on March 17, 2011
are your measuring Iodine 131 level or all radiation particles ? what other radioactive particles are present in Tokyo at this moment that are harmful to human ?
Thank for your services.
admin said on March 17, 2011
I am not an expert but the geigers Geiger-Mueller (GM) probe can detect the presence of alpha radiation. … Examples of some gamma emitters: iodine-131, cesium-137 etc. You can read up on basics here http://www.hps.org/publicinformation/ate/faqs/radiation.html
Sorry cant answer anything technical on any official basis, am only a hobbyist.
henry said on March 17, 2011
Thanks friend and wish you all the best.
Young children should be sent as far from there as one can. Better to be safe than sorry.
fabien sena said on March 17, 2011
Let me know if you need hosting somewhere else for this site.
I have a server in Canada and can set up some space / bandwidth if needed.
Cheers
dave said on March 17, 2011
good luck everyone
Steve said on March 18, 2011
Also living in Tokyo, with no immediate plans to leave, I am often checking this. I realise that this is an amateur endeavour but reassuring none the less.
Thanks mate.
Rel said on March 18, 2011
Thanks and good luck. I really hope none of the most dangerous plutonium particles coming from the MOX fuel rods in the pool (emitting alpha radiation) are reaching anyone over there.
Gina said on March 18, 2011
This site you have is a great help to everyone who wishes to see something that can be used as proper, unadulterated numbers which we can use as a true measure. Something tangible, like your set-up there, can make such a difference for curious and concerned minds. Thank you very much for doing this! It’s being written about here in the US. I just found out about it from a story on c-net.
Glyn Meredith said on March 18, 2011
Good work, useful information. Many thanks for your effort. If you need any help, please ask … just kicking my heels in Nerima-ku, waiting for normality.
Dayb said on March 19, 2011
Is it just me or is the radiation level going down?
Glyn Meredith said on March 19, 2011
To me, it looks like it’s going down …
John Borchard said on March 19, 2011
Thank you so much for keping this up. There is no replacement for raw data. If you need additional server assistance, please do contact me, I have several unused GB/Month on a Win server that are yours if you need them. All the best, jb
Nancy Donaldson said on March 19, 2011
In Orange County, California. It is 3/18 pm.
There has been NO change in So. Calif. or elsewhere here..just normal background rad.
Media drives me nuts with its doom and gloom which is real scary 1 min. and then full of ALL Guessing the next. Can’t really believe much of any media for sure, though I stay tuned in. My heart & Spirit is filled for the Japanese people for their pain and courage too. So many needs for survival, but Hang In there..we all need each other.
Ichi Fuji said on March 19, 2011
I too want to thank you for taking the time and trouble to post this data for public viewing. I would, however, be more comfortable with outside readings, as I assume these would be higher and not influenced by how well your living space is sealed/ventilated/filtered.
God bless Japan and the ongoing rescue/recovery effort!
admin said on March 19, 2011
I leave the window slightly open normally, airborne particles do enter room, but I have noticed from observation for over a year that there is no difference that I can detect open or closed. I also have a portable geiger outside that I do spot checks and it is also reads the same range 10 – 15uR/hr.
Jeff M said on March 20, 2011
Radiation on it’s own is easy to measure the effects of, for instance if you fly in a plane you receive the equivalent of so many x-rays or whatever. The trouble is the radiation is coming from waste that is floating around in the air and water and will continue to release radiation for decades, so any increase in radiation correlates to toxicity in the environment. The radiation won’t kill you, but the source of it might get inside you and give you thyroid cancer 20 years from now.
dvb said on March 20, 2011
living in Mita, Minato-ku, not far from Meguro always stayed in Tokyo until now, this measurement is pretty much precise, I was following an another person with a geiger counter in Shinjuku.
thank you very much.
d
admin said on March 20, 2011
Please direct discussion on radiation measurement, observations, questions to the forums. Thanks
here