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Fukushima Contaminants Found As Far North As Alaska's Bering Strait

Radioactive contamination from Japan's Fukushima Daiichi nuclear power plant hit by a tsunami in 2011 has drifted as far north as waters off a remote Alaska island in the Bering Strait, scientists said on Wednesday. Reuters reports: Analysis of seawater collected last year near St. Lawrence Island revealed a slight elevation in levels of radioactive cesium-137 attributable to the Fukushima disaster, the University of Alaska Fairbanks Sea Grant program said. The newly detected Fukushima radiation was minute. The level of cesium-137, a byproduct of nuclear fission, in seawater was just four-tenths as high as traces of the isotope naturally found in the Pacific Ocean. Those levels are far too low to pose a health concern, an important point for people living on the Bering Sea coast who subsist on food caught in the ocean.

Those levels are far too low to pose a health concern, an important point for people living on the Bering Sea coast who subsist on food caught in the ocean, Sheffield said. Until the most recent St. Lawrence Island sample was tested by the Woods Hole Oceanographic Institution, the only other known sign of Fukushima radiation in the Bering Sea was detected in 2014 by the National Oceanic and Atmospheric Administration.

75 comments

  1. So what by Anonymous Coward · · Score: 5, Insightful

    There are lots of contaminants from lots of things in lots of places.

    We can detect tiny trace amounts of them with the instruments we have today.

    And of course there is no health concern. I'm glad that was in the summary, because there are people who are ignorant enough to believe otherwise.

    1. Re:So what by ShanghaiBill · · Score: 1

      And of course there is no health concern.

      Indeed. Your body treats cesium like potassium. It does not bioaccumulate. You pee it out. You can speed up this process by using Lite-Salt or No-Salt to boost the level of potassium in your diet, and increase the excretion of both potassium and cesium in your urine.

      Or you can just not worry about it.

    2. Re:So what by angel'o'sphere · · Score: 0, Troll

      Perhaps you should stop talking about stuff you have no freaking idea about?

      Your body treats cesium like potassium. It does not bioaccumulate.
      Your human body, perhaps. No idea. But how is that relevant when your food does?

      https://www.ncbi.nlm.nih.gov/p...

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    3. Re:So what by Anonymous Coward · · Score: 0

      "Cesium is readily absorbed across the brush border of the intestines in a manner similar to potassium and most is eventually excreted through the urine and feces. The biological half life of Cesium in humans ranges from 15 days in infants to 100-150 days in adults."

      Methinks the above statement is correct. Makes sense, same periodic column as potassium..

    4. Re:So what by Dunbal · · Score: 2

      Potassium is the primary intracellular cation. Cells are designed to hold on to their potassium with ATP powered sodium/potassium pumps on their membranes, shoving sodium out and taking potassium into the cytosol. Therefore it stands to reason that cesium would bio-accumulate if it is similar to potassium - the longer you are exposed to it in your diet the higher the cesium fraction in your cells.

      --
      Seven puppies were harmed during the making of this post.
    5. Re:So what by sfcat · · Score: 4, Informative

      Perhaps you should stop talking about stuff you have no freaking idea about?

      Since when has that ever stopped you.

      Your body treats cesium like potassium. It does not bioaccumulate. Your human body, perhaps. No idea. But how is that relevant when your food does?

      https://www.ncbi.nlm.nih.gov/p...

      Your link is paywalled and we can only read the abstract. And since fish, shrimp and things people eat don't use Cesium to build their body structure, they won't accumulate heavy metals over time. Cesium, like Strontium, is a heavy metal and won't combine with carbon or participate in other biological reactions. That's why most experts worry about Iodine and not Cesium or Strontium when evaluating the risk of bio-accumulation of medium lived fission products. But Iodine's isotopes are harder to detect than Cesium's which is why you see these articles about Cesium. The fact we can detect it at all says more about the sensitivity of our instruments than risk to the environment. They are measuring a difference of 0.4 atomic events per volume of seawater! Remember the conversion factor there is on the order of 10^22!

      --
      "Those that start by burning books, will end by burning men."
    6. Re:So what by angel'o'sphere · · Score: 1

      In a human body it actually _replaces_ potassium with server side effects. So in that sense it indeed does bioaccumulate.

      the longer you are exposed to it in your diet the higher the cesium fraction in your cells.
      Exactly, but bio accumulating would be even server, e.g. as in mushroom that suck cesium up like a sponge.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    7. Re:So what by angel'o'sphere · · Score: 2, Interesting

      Iodine is a complete different story as it accumulates in your Thyroid.

      Cesium, like Strontium, is a heavy metal and won't combine with carbon or participate in other biological reactions
      It does. It replaces potassium and acts more or less like it ...

      That's why most experts worry about Iodine and not Cesium or Strontium when evaluating the risk of bio-accumulation of medium lived fission products
      Sure ... in your world. In my world they worry about mushrooms, wild boar eating mushrooms, deer eating mushrooms, humans eating mushrooms, deer and wild boar ... oops, and that Caesium.

      No idea about the link, but the numbers are clearly in the summary, if you don't like it, google for another one, should be easy.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    8. Re:So what by sfcat · · Score: 1

      Sure ... in your world. In my world they worry about mushrooms, wild boar eating mushrooms, deer eating mushrooms, humans eating mushrooms, deer and wild boar ... oops, and that Caesium.

      No. Only the mushrooms are a problem to eat. They are building their structure with Cs-137. The deer pisses out the Cs-137 just like the other isotopes of Cs they consume normally when eating mushrooms. This isn't DDT we are talking about. Heavy metals just don't work the same way as organic molecules. If they did they would be part of organic chemistry. You know, there are enough problems in the world without inventing new ones that don't exist.

      --
      "Those that start by burning books, will end by burning men."
    9. Re:So what by Uecker · · Score: 1

      And yet, there are high levels of Cs-137 in wild boar from eating mushrooms in some regions of Germany:

      http://www.spiegel.de/internat...

      You know, theory is nice and all a that, but the underpinning of science is still to always look at the data.

    10. Re:So what by Froggels · · Score: 1

      Cells are designed to hold on to their potassium...

      Cells are not designed.

    11. Re:So what by Dunbal · · Score: 1

      A bit touchy, no? I'm an atheist so I certainly don't believe in "Intelligent Design". However it's a way of expressing myself. And at a push you could say that evolution is design by trial and error. If it works it gets to survive.

      --
      Seven puppies were harmed during the making of this post.
    12. Re:So what by goose-incarnated · · Score: 1

      Cells are designed to hold on to their potassium... Cells are not designed.

      Yes they are, just not intelligently. "Designed by repeated adaptation over several generations" is still "designed".

      --
      I'm a minority race. Save your vitriol for white people.
    13. Re:So what by angel'o'sphere · · Score: 2, Informative

      The deer pisses out the Cs-137 just like the other isotopes of Cs they consume normally when eating mushrooms.
      Only over a considerable amount of time, it is not like: oops I accidentally ate some Cs-137 and now need to go to pee quickly. As long as they eat the mushrooms they have a higher level ...

      Heavy metals just don't work the same way as organic molecules. Of course not. They accumulate in the kidneys and leaver, or wander into the bone marrow ... or in this case, no idea why you neglect it: in he nervous system. I told you now several times that Cs is a potassium "ersatz". Everywhere where the body usually uses potassium, cesium is displacing it and thus cesium is bioaccumulated, in everything that is eating it.

      https://en.wikipedia.org/wiki/... scroll to: "Health and safety hazards"

      Interesting read, too: accumulation of cesium in human bones: https://www.jstage.jst.go.jp/a...

      No idea where you got your misinformation about cesium from. It is an alkali metal, obviously it acts everwhere where other alkali metals act.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    14. Re:So what by Anonymous Coward · · Score: 0

      Still, this is something related to nuclear stuff, and we all know, anything nuclear is scary and bad. Just the sheer amount of nuclear's death toll per terawatt put nuclear in a class by itself compared to other energy sources.

    15. Re:So what by Anonymous Coward · · Score: 0

      you know in some asian countries the laws are a bit absurd: for example if you damage a person and render him/her unable to work, you get hit with a fine that "allows this cripple to live humble fort the rest of his/her life". so what people do is put the car in reverse and run over the person one more time because the one time "funeral fine" is cheaper ...

      with nuclear, people don't flat out die like flies ... they just become cripples, a drag on society and are acctually worse off.
      but for nuclear supporters that think via food-energy they have ingested originating from a big ball of (for them) invisible fusion in the sky, the notion of tapping into the same source for electricity is outrages and are rather willing to support the proverbial monopoly man owning all "(misnomer) public utility" fields on the board...
      not to mention all the genetic defects that people falling from a solar ladder can emit to their offspring?

    16. Re:So what by Anonymous Coward · · Score: 0
      From your link:

      Radiocaesium does not accumulate in the body as readily as other fission products (such as radioiodine and radiostrontium). About 10% of absorbed radiocaesium washes out of the body relatively quickly in sweat and urine. The remaining 90% has a biological half-life between 50 and 150 days.

      Sfcat can claim you are overstating it, considering how little caesium was found in the water and the half-life of washing-out of about 100 days.

    17. Re:So what by Anonymous Coward · · Score: 0

      And what about the marine life the feed in areas near the Fukushima containment? They get radiated with high doses of this C-137 and travel to other parts of the globe only to be caught by fishermen and sold on the market.

    18. Re:So what by parkinglot777 · · Score: 1

      Your link is paywalled and we can only read the abstract.

      Below is the conclusion of the paper. The paper is somewhat hidden from public. I don't want to give the link to the free version in public because it may hurt the site that hosts this free version.

      4.Conclusion

      Cesium concentration factors in the same range as those for macroalgae and fish have been determined previously for other similar species (Gutknecht, 1965; Hewett and Jefferies, 1976). On the other hand, the steady-state 137 Cs concentration factors in the isopod and brown shrimp were significantly higher than those which have been reported for some marine invertebrates (Harrison, 1973; Warnau et al., 1996). The concentra- tion factors of 137 Cs in the isopod and brown shrimp species were influenced strongly by moulting. For this reason, the results expressed are for non-moulting individuals.

      In general, the effect of temperature on the accumulation of radionuclides in marine organisms varies according to the radionuclides concerned. For example, the accumulation of 95m Tc by macroalgae has been shown to be metabolically controlled (Topcuoglu and Fowler, 1984) and uptake rate of 137 Cs in clams is enhanced by increasing temperature (Wolfe and Coburn, 1970). On the other hand, uptake rates of some radio-nuclides such as 110 Ag (Topgcoglu et al., 1987) and 237 Np (Guary and Fowler, 1977) have been found to be independent of temperature. According to the present results of 137 Cs uptake by isopod species, it can be said that the accumulation process was not metabolically controlled. However, the bioaccumulation rate in fish species at the present study was increased in response to increasing temperature. Pentreath (1975) demonstrated that temperature does affect the rate of accumulation of 134Cs by plaice fish. This result is in agreement with the bioaccumulation data in the fish species of the present study. In contrast, the bioaccumulation rate of 137 Cs in macroalgae was negatively related to the temperature. It is not possible to discuss this situation. However, the inverse temperature effect observed for 134 Cs radionuclide in mussels at lower salinity (8%) (Dahlgaard, 1981). It is well known that macroalgae possess a narrow range of tolerance to temperature. The degree of tolerence depends on the time exposure and on the rate of temperature change (Zattera et al., 1975). The temperature was measured to be 6.6C at the lagoon water during the collection time of the organisms. If we could have examined after long adaptation period or temperature gradually increased from 6.6C to 16C, we would have observed more reliable values for the macroalgae species at 16C.

      The influence of salinity on the rate of bioaccumulation and concentration factor of metals and radio-nuclides in marine organisms is also variable. Previous studies showed that 137 Cs (Bryan, 1963) and As (Uelue and Fowler, 1979) are accumulated in marine invertebrates in high levels from water of lower salinities. On the other hand, the concentration factor of 134 Cs in some fish species increased at high salinity (Pentreath, 1975). In the present study, the accumulation of 137 Cs in isopod species is similarly affected, with significant increases at brackish water than sea water. At the same time, the bioaccumulation rate in macroalgae species also showed slight increase at low salinity. However, the bioaccumulation rate of 137 Cs in the fish species at sea water was higher than brackish water.

      The present study strongly suggests that the rapid rate of 137 Cs bioaccumulation and high concentration factors make isopods suitable candiates for their use in monitoring of cesium radionuclides on the shoreline of brackish or marine environments. At the same time, the use of the brown shrimp species for monitoring of the radionuclide in a brackish environment would be a valuable approach.

  2. determine sedimentation rates with this old trick! by Anonymous Coward · · Score: 0

    The only people that were happy with Fukushima were the geologists that use nuclear markers in sediment samples. With air testing of nukes long gone and Chernobyl fading there were plenty of labs that popped champagne that day.

  3. Kind of odd to define Alaska as "North" from Japan by SuperKendall · · Score: 1

    I guess you could maybe define it as North-East, but any way you slice it (even considering projection madness) Alaska is a fair bit east of Alaska... really pretty much Russia is north of Japan.

    By saying "as far north as" you are really saying something along the lines of about as far north as from the bottom of the U.S. to the top,

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  4. Re:determine sedimentation rates with this old tri by ShanghaiBill · · Score: 4, Funny

    The only people that were happy with Fukushima were the geologists that use nuclear markers in sediment samples. With air testing of nukes long gone and Chernobyl fading there were plenty of labs that popped champagne that day.

    New conspiracy theory: The geologists somehow triggered the 2011 earthquake and tsunami, in order to cause the meltdown and create new radioactive markers in the sediment.

    Proof: Why else would they have champagne chilled and ready to go?

  5. Not the first time and won't be the last. by burtosis · · Score: 4, Interesting

    Like the time a Russian spy satellite powered by a nuclear reactor burned up in the upper atmosphere releasing roughly 90 lbs of uranium particles into the atmosphere? Everyone alive at the time probably has a few atoms of it in their bodies. While trivial compared to background radiation this kind of pollution can easily get out of hand so serious regulation and cleanup is necessary but people shouldn't get too worked up as natural sources of radiation are everywhere and dwarf the trace amounts we are detecting in the op article.

    1. Re: Not the first time and won't be the last. by Anonymous Coward · · Score: 0

      Really? The first date testing began was in 2014, well after the accident? Nuts.

    2. Re:Not the first time and won't be the last. by quenda · · Score: 2

      Like the time a Russian spy satellite powered by a nuclear reactor burned up in the upper atmosphere releasing roughly 90 lbs of uranium particles into the atmosphere?

      The author of that article is clueless. U235 "highly radioactive"? No. If so, it would not have lasted for billions of years in the earth's crust, along with u238, thorium and potassium-40.
      Perhaps the writer is confusing it with the Plutonium 238 used in space probe RTGs?
      The concern with reactors crashing, weapon tests, and power reactor accidents is not the large amount of near-stable uranium, but the small amount of fission byproducts, such as the caesium-137 in the above article.

      Everyone alive at the time probably has a few atoms of it in their bodies.

      And countless atoms of uranium from other sources. About 0.1 mg. Lots more potassium 40 though!

    3. Re:Not the first time and won't be the last. by bigpat · · Score: 1

      Or that time... There have literally been hundreds of man-made releases of material that includes radioactive particles. And natural radiation is all over the place.

      I think articles like this undermine our understanding of the world by highlighting something that is of no importance to the public or even very limited use to the scientific community. Just to do a hit job on public trust of the nuclear power industry which is the safest least polluting and least expensive overall mass energy source on the planet by far.

  6. How is 4/10 of normal an elevated level? by Anonymous Coward · · Score: 0

    ...

    1. Re:How is 4/10 of normal an elevated level? by ShanghaiBill · · Score: 5, Insightful

      How is 4/10 of normal an elevated level?

      Obviously the journalist is an idiot.

      Here is a more competently written source: Fukushima radiation found in Bering Sea.

      The concentration of cesium 137 went from 2.0 to 2.4 becquerels per cubic meter.

  7. Re: Kind of odd to define Alaska as "North" from J by Anonymous Coward · · Score: 0

    Uh

    Did you just say Alaska is east of Alaska? I mean, yeah, one of my feet is east of my other foot by some measure, and I suppose one of my nuts is east of the other nut, but not really sure that matters

  8. Re: Kind of odd to define Alaska as "North" from J by Anonymous Coward · · Score: 0

    Sigh. The worst kind if pedant

  9. Re:determine sedimentation rates with this old tri by Falconhell · · Score: 2

    Nah, geologists have got rocks in their heads. :)

  10. Re:determine sedimentation rates with this old tri by Aighearach · · Score: 1

    That's pretty good, you should write an ebook.

  11. Damn whales! by thesjaakspoiler · · Score: 1

    Swimming freely in the ocean and ingesting all this radioactive waste and pooping it out near Alaska. This is why Japan should be allowed to 'research' all the whales.

    1. Re:Damn whales! by Anonymous Coward · · Score: 0

      research the shit out of them.

  12. Correction, east of Japan... by SuperKendall · · Score: 1

    I guess most people figured out what I meant from the context of the article (and my subject) but I have to admit the error there, thanks for pointing it out!

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Correction, east of Japan... by Anonymous Coward · · Score: 0

      It must be so sad for you being his gay bitch widow now he has moved on. Reaaeeeeeaaaalllllyyyy butttttthuuuuurrrrtttt

  13. Great point by SuperKendall · · Score: 1

    New conspiracy theory: The geologists somehow triggered the 2011 earthquake and tsunami,

    I have to say that theory has some good traction, as who else would know best HOW to trigger an earthquake?

    As the old saying goes, a little knowledge and a lot of dynamite is a dangerous thing.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  14. Uh, what? by msauve · · Score: 1

    "The level of cesium-137, a byproduct of nuclear fission, in seawater was just four-tenths as high as traces of the isotope naturally found in the Pacific Ocean."

    So, that's saying there was a reduction of 60% over previous natural levels.

    I suspect they meant to say the levels increased by 40%, but innumeracy.

    --
    "National Security is the chief cause of national insecurity." - Celine's First Law
  15. Re:Kind of odd to define Alaska as "North" from Ja by Jane+Q.+Public · · Score: 1

    There is absolutely nothing remarkable about these results. They have been fully expected for years.

    I mean, it might actually matter that the circulation patterns in the Pacific are pretty well known.

    Washington State was given a warning to watch for radionuclides shortly after the Fukushima incident. It is absolutely no surprise to anybody that it gradually made its way further northward.

  16. As someone who's had 4 beers... by steveb3210 · · Score: 2

    You shouldn't have the same sentence twice in a summary.

    1. Re:As someone who's had 4 beers... by Anonymous Coward · · Score: 0

      They're just getting more creative with dupe stories. Now we have dupes of the story in the story.

    2. Re:As someone who's had 4 beers... by Anonymous Coward · · Score: 0

      Is this the power of radiation poisoning?

    3. Re:As someone who's had 4 beers... by Anonymous Coward · · Score: 0

      Maybe Trump wrote it?

      He has a tendency to be repetitive.

  17. Testimony to detection technology by LynnwoodRooster · · Score: 2

    Way too low to be any impact to life, and probably below the level of detection just 10 years ago. The problem arises when we can detect things - way below safe levels - and people go OMG WE HAVE XXX PRESENT!

    --
    Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    1. Re:Testimony to detection technology by Anonymous Coward · · Score: 0

      Toxicity and bio-accumulation are a thing. Can't ignore that.

  18. Re:Kind of odd to define Alaska as "North" from Ja by LynnwoodRooster · · Score: 1

    Alaska is North of Japan, due to being higher in Latitude. Just like San Francisco is North of Los Angeles. Heading straight North from Los Angeles and you miss SF by quite a bit, as SF is actually NNW of LA; but it's a general direction that matters here. in that regard, Alaska is North of Japan, and Japan is North of Hong Kong.

    --
    Browsing at +1 - no ACs, I ignore their posts. So refreshing!
  19. This is news? by Gription · · Score: 3, Insightful

    The Pacific Ocean in the Northern Hemisphere circulates in a clockwise direction. That puts Alaska as the 2nd place the current will reach after Russia.
    This isn't news. This is expected.

  20. It's worse than that. by Anonymous Coward · · Score: 0

    Some of the photons from Fukushima have spread as far away as Alpha Centauri.

    1. Re:It's worse than that. by Killall+-9+Bash · · Score: 1

      I doubt that. The simulation wouldn't be that wasteful with resources. Not unless there were someone in the vicinity of Alpha Centauri looking in the direction of Fukushima..

      --
      "Prediction: within 10 years, Windows will be a Linux distribution." Me, 7-6-2016
    2. Re:It's worse than that. by Anonymous Coward · · Score: 0

      QUIET! Now the anti-nuclear crowd will demand we stop ALL nuclear power plants because it doesn't just screw up our planet, it screws up the galaxy!

  21. That's not equivalent. by SuperKendall · · Score: 1

    Just like San Francisco is North of Los Angeles.

    Sure but we are not talking about that kind of deviation, it's more like saying New York City is north of Los Angeles. Yes it is technically north, but there is a whole lot of east there as well you are ignoring... Have you ever heard anyone define NYC as being "North of LA"? No, even though technically it is correct - it's not a good descriptive statement.

    I was not saying it's not technically correct, just that the phrasing is odd to me. It's also kind of amusing to think of Japan as being considered in "the east" yet something Japan did is affected The West, however slightly, by sending something East (and yes a bit North).

    Go look at a globe (virtual or otherwise) and see what I mean. I believe Alaska is five timezones away from Japan... (it's across the international dateline but still).

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  22. Tiny Bubbles. by Anonymous Coward · · Score: 0

    With sufficient sensitivity you could detect a flea fart in the Pacific. But, it is academic, not useful.

  23. fake news by astrofurter · · Score: 0

    This is obviously fake news. Everyone knows that a nuclear meltdown spreading radioactive waste far and wide is UNPOSSIBLE. Atomic power is TOTALLY SAFE. Just ask the three-headed talking fish off the Fukushima coast - they'll tell you.

  24. Totally Agree by SuperKendall · · Score: 1

    Oh I agree, my post is pedantic AF to use the kids lingo. Just felt compelled to bring it up for the sake of discussing the nuances of English.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  25. This is actually great news! by Anonymous Coward · · Score: 0

    If people eat less fish there might be hope yet for the oceans!

  26. Re:determine sedimentation rates with this old tri by TRRosen · · Score: 1

    Fukushima and Chernoblyl are tiny bumps on the chart of radiation from nuclear testing and combined they are a tiny bit of natural background radiation.

  27. Not even newsworthy by TRRosen · · Score: 1

    So let us get this in terms of reality. So there was .4 becquerels found in 1 tonne of seawater. That's the equivalent of 1/4 of a slice of a banana? This has zero effect on the environment. To be clear if you drank 40 million tonnes of this seawater and retained all the Fukushima radiation for one year you would have reached to lowest amount of exposure shown to be able to cause cancer.

  28. U.S. Changed Standards to Suit Accident by BrendaEM · · Score: 1

    Immediately after the accident, the U.S. changed their radioactivity standards. West-coast fish should be checked for radioactivity.

    --
    https://www.youtube.com/c/BrendaEM
  29. California a RADIOACTIVE WASTELAND by Anonymous Coward · · Score: 0

    I do recall seeing Thunderf00t make a lot of hay out of certain idiot YouTubers claiming California would become a RADIOACTIVE wasteland because of Fukushima.

    Here's his video

    https://www.youtube.com/watch?v=d2PxY-wOrI8

  30. Awww, yet no rightwingers to moan "-1 disagree"mod by Anonymous Coward · · Score: 0

    I guess the rightwingers must have been the ones using -1 moderation to silence a word they don't want heard. I answered the other AC's question, they asked "so what", and the so what is that the problems of nukes are not local like a death installing solar and falling from the roof, but international, like this story.
    But you didn't WANT an answer to that, you just wanted to whataboutism it.

  31. No, that's exactly the point. by Anonymous Coward · · Score: 0

    The article heading doesn't say north of japan, just "as far north as Alaska". Are you trying to say that if you're not in the same timezone as Japan you cannot be further north than it????

  32. This is about our ability to detect single atoms by Anonymous Coward · · Score: 0

    ...not how big Fukushima was. All they're doing is taking some ocean water, putting it in a gamma-ray spectrometer, and looking for a signal corresponding to a short-lived isotope of cesium that is characteristic of fission reactions.

    What's impressive about the above is they've manged to pick out the cesium signal from the 100x larger gamma-ray emission of naturally occurring potassium.

    As for how much people should worry, biological effects don't depend on specific wavelength (only total energy), so this has all the impact of a laser pointer in the Sahara at noon.

    (By the way, cesium and potassium, both being alkali metals, have almost identical biological absorption, distribution, and excretion patterns. I simplify a bit because your body does distinguish sodium and potassium, but your body really can't tell potassium, rubidium and cesium apart.)

  33. You're wrong by Anonymous Coward · · Score: 1

    Perhaps you should stop talking about stuff you have no freaking idea about?

    Since when has that ever stopped you.

    Your body treats cesium like potassium. It does not bioaccumulate. Your human body, perhaps. No idea. But how is that relevant when your food does?

    https://www.ncbi.nlm.nih.gov/p...

    Your link is paywalled and we can only read the abstract.

    Then pay the money, that's what I do.

    That's why most experts worry about Iodine and not Cesium or Strontium when evaluating the risk of bio-accumulation of medium lived fission products.

    Cs137 and Sr90 are treated like Iodine and Potassium by the body, IIRC. They don't worry about Iodine, they use Iodine in to try to block the uptake of Cs137 if you are exposed to that radio-isotope.

    But Iodine's isotopes are harder to detect than Cesium's which is why you see these articles about Cesium.

    They're all hard to detect in food because the water in the food acts as a moderator to the alpha, beta and gamma radiation radiation emitted by radio-isotope.

    The fact we can detect it at all says more about the sensitivity of our instruments than risk to the environment. They are measuring a difference of 0.4 atomic events per volume of seawater! Remember the conversion factor there is on the order of 10^22!

    No, what it says is the instruments aren't sensitive enough to protect the food supply when foodstuffs are moving in tons. How are you going to detect Pu-239 in a ton of lettuce? Plutonium Chloride is highly soluble and treated like iron by the body as the beggining of many metabolic processes.

  34. Re:determine sedimentation rates with this old tri by Anonymous Coward · · Score: 0

    Santa Claus is coming to town.

  35. Thank you BeauHD by Anonymous Coward · · Score: 0

    Please do not listen to idiots like this.