Tokyo Professor: Radionuclides are being released continuously into ocean from Fukushima plant — Coming from somewhere around reactor housings (CHART)

Published: March 4th, 2013 at 4:15 pm ET


Title: Continuing 137Cs release to the sea from the Fukushima Dai-ichi Nuclear Power Plant through 2012
Source: Biogeosciences
Author: J. Kanda, Department of Ocean Sciences, Graduate Faculty of Marine Science, Tokyo University of Marine Science and Technology
Date: 2013
Emphasis Added


Rate of cesium-137 (137Cs) release to the sea from the Fukushima Dai-ichi Nuclear Power Plant was estimated until September 2012. Based on publicly released data of 137Cs in seawater near the power plant by Tokyo Electric Power Company, a continuing release of radionuclides to the sea is strongly suggested. […]


[…] In this paper, I examined cesium-137 (137Cs) radioactivity in seawater around the power plant. 137Cs radioactivity in the harbour facility of the power plant was especially 10 informative. From these data, I obtained an exchange rate of harbour water with outer seawater. With the exchange rate and a relatively stable 137Cs radioactivity inside the harbour, I estimated a rate of continuous 137Cs release from the harbour to the sea. […]

Results and Discussion

[…] 137Cs radioactivity at 2I in the unit 1–4 intake canal was consistently larger than at ULD in the main harbour (Fig. 2a). Also, 137Cs radioactivity at ULD was consistently larger than at T1 and T2 in the outer sea (Fig. 2a, b). […] the consistent gradient of radioactivity between these waters indicates that radionuclides are still being released continuously somewhere around the reactor housings. […]

I also conclude that 137Cs release from June 2011 until September 2012 is significant […]

Full paper here

Published: March 4th, 2013 at 4:15 pm ET


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22 comments to Tokyo Professor: Radionuclides are being released continuously into ocean from Fukushima plant — Coming from somewhere around reactor housings (CHART)

  • Jay

    Look very carefuly !

    Observe that graph showing the red dots scattered like a mist ( the spread of the radiation intensity ) : notice they are actually consecutive readings taken along a month that show Tremedeous Spikes in radiation !
    The graph is Exponential/Logarithmic so within a month or so ( Every Month ! ) the radiation goes from 50 to 1,500 and back down !

    WTH is going on !

    • We Not They Finally

      Why would radiation show up on a graph as cresting and ebbing WAVES? (Just asking — don't know.)

      • robu

        Corresponds to a combination of rain/snow and the tides perhaps?

      • Wreedles Wreedles

        I would guess it's either:

        1) Earthquakes disturbing the corium, or

        2) Periodic criticalities.

        Correlating the chart with seismic activity should provide some insight.

  • TheBigPicture TheBigPicture

    Radiation continuously entering the ocean, with billions of becquerels continuously rising into the air, carried by the wind. Far.

    • Jay

      Remember that reading of 10 Million Bk/Kg every Hour ?
      The graph explains/confirms that .

      BTW , I need new reading glasses , on the graph the readings go from 50 to 1,000 and back every month .
      That an increase of 20 times from the begining and the end of a month time . Like clock work .
      What causes over-spills or produces spikes in radiation regularly , monthly ?
      TEPCO ?

      • We Not They Finally

        Wonder if that is some kind of regular DUMPING schedule — like every month they dump more radioactive water into the sea on some schedule. They are pouring millions of gallons of water a day at the plant(or is it per hour? — it's so mind-boggling — hard to keep track of) and the water has to go SOMEWHERE.

  • Sickputer

    Take a look at another Jota Kanda paper he presented at the November 2012 conference: (Courtesy of the Nuclear Free Planet information at–symposium-tokyo-nov-12-13-2012.html )

    " Jota Kanda, Tokyo University of Marine Science and Technology: "Long-term

    Sources: To what extent are marine sediments, coastal groundwater, and
    rivers a source of ongoing contamination?"
    Direct link to pdf (this is an automatic download link):

    SP: Very colorful and informative presentation by Dr. Kanda and I call your attention to some slides later in the 20 page document.

    Take a close look at slides on pages 9-12 showing the regional river drainage into the ocean off Daiichi.

    Also look at what I call the Smokin" Gun slide (page 12) in which Kanda speculates about '"Highly Contaminated" Water Under the Plant' also this cryptic note:

    "Possible groundwater seepage from nearby seafloor???" and…"Contaminated water underneath the reactor/turbine housings of Reactors 1-­‐4"

    SP: I would also like an explanation of his sidenotes on page 17:

    "Mixed suspended sediment? and “Spider leg” hypothesis?

    SP: Interesting stuff…the plot thickens in Japan.

    I don't guess Dr. Kanda will be getting a Christmas card from Prime Minister Abe this year. >;->

  • razzz razzz

    Fizzling still going on and they can't stop it.

  • PavewayIII PavewayIII

    "…The data I use are obtained and publicly released by Tokyo Electric Power Company (TEPCO)…"

    Why trust those lying weasels for anything?

    Oh yeah – they're the only ones allowed to measure the contamination.

    At lease the EPA has our backs in the U.S.! The EPA submarines are constantly on the prowl off our coasts for the slightest hint of harmless radiation.

    • We Not They Finally

      Wow. Jokes about the EPA were starting to look funny until maybe today. Obama now wants it headed by the head of the Office of Air and Radiation — you know, the ones that knocked out the monitors as soon as Fukushima happened.

  • nedlifromvermont

    yes, Paveway111, they are constantly on the prowl, with their monitors in the "off" position ….

    … and Mr. GE … could you please send three "off" switches for nuclear reactors run amok at Fukushima Daiichi? You must have forgotten to send them along with the reactor kits … Soon would be nice …

    peace …

    • hbjon hbjon

      The inventor of the "core catcher" still lives comfortably on his private island in the South Pacific, eating produce from his greenhouse.

  • razzz razzz

    One in awhile Mochizuki on his site has been posting these TEPCO graphs of fallout reading in the harbor. Pre 3/11 the reading were close to nil then obviously spiked during the meltdowns and explosions then came down but leveled off much higher than was ever expected because there is no containment and the core are basically in the wild.

    Soon they will begin pumping groundwater out of new wells before it reaches the cores and pump it out to sea in a bypass attempt to keep fresh groundwater from mixing with TEPCO's questionable cooling and filtering loops, to try and stem the free flowing groundwater from getting to the cores and carrying off radioactive materials into the harbor and elsewhere. What could go wrong?

    • Sickputer

      > What could go wrong? (With diversion groundwater wells)

      SP: Your sarcasm is palpable, but I'll bite. 😉

      The worst side effect from diverting the groundwater could be a big atomic boom from improperly cooled "cores in the wild" (love your expression by the way). They are wild beasts, almost eerie with their powerful fission capabilities. As I noted several days ago the scientists had to reapply chemicals for many years at Chernobyl to halt re-fission processes. Fukushima's three wild cores are massive compared to the single mass at Chernobyl Unit 4.

      Enenewsers have postulated the groundwater and maybe tidal flow in the undersoil mudstone fissures have helped moderate the China Syndromes experienced so far. They could get much worse if the natural sources of cooling waters are diverted by drilling relief wells. They will proceed cautiously because they fear the same thing.

  • ruppert

    I may be totally wrong but recently I watched an hour and a half long video about nuclear waste dumping on Youtube that showed that France was continually dumping waste at a location called "La Hague". In the video Greenpeace showed the very large pipe spitting out waste right into the water and they tested it and it was verified to be containing some ridiculous levels of toxic waste. Does anybody know if that is still going on? Supposedly when they banned ships dumping barrels of waste at sea they still were allowing discharging directly into the sea from land.


    • Sickputer

      You aren't wromg Rupert…the bastards at Areva have been laying an ecological time bomb in the English Channel:

      "Areva’s La Hague reprocessing plant has annually discharged 100,000,000 gallons of radioactive liquid wastes into the English Channel via an underwater pipeline. The sediments at the foot of this pipe would be considered intermediate level radioactive waste under British laws and regulations, requiring deep geologic disposal. Despite this, they are allowed to remain on the seafloor, eroding and carried away by the ocean’s currents.

      Nearby beaches have been closed to public access due to radioactive contamination. Elevated rates of leukemia have been detected in neighboring populations. Radioactivity from La Hague has been detected as far away as waters in the Canadian Arctic.

      Additionally, in the late 1960s, the French reprocessing plant at Marcoule dumped nearly 50,000 waste barrels into the sea off the coasts of Spain and Brittany."

      SP: Areva has an environmental exemption that allows them to run a pipeline out into the English Channel 5,000 meters and it gushes radioactive waste from their reprocessing plant. Quite an extinction device.

      • Mack Mack

        Excellent research, SP.

        @ 47:15 — The video 'ruppert' cites discusses the LaHague discharge-pipe issue

        @ 49:15 — the video show how toxic gases like Krypton-85 are released from LaHague, in tens of thousands of Becquerels per liter of air, and the Krypton gas ends up all over Europe.

        This is the most important video on nuclear waste there is. I think Sue or arclight posted it initially.

        This is THE one video everyone should watch to understand nuclear waste reality.

  • PhilipUpNorth PhilipUpNorth

    "7.1 thousand trillion Bq of Cs-134/137 and 1.1 ten quadrillion Bq of Iodine-131 released to the sea from 3/26 to 9/30."
    The numbers are simply staggering.
    But proof that Corium1,2,&3 are still active in the mudstone under the Nuke-a-plex.
    And proof, I think, that the corium remains at a shallow depth, perhaps only 50'-100' below the Torus Basements of Buildings1,2,&3.
    My suggestion is to build a Closed Loop Heat Sink to keep the corium cool:
    * Build a cofferdam 100' into mudrock using interlocking steel pilings. The cofferdam extends completely around the Harbor, and around Buildings 1,2,3,&4.
    * Pipe water from the bottom of the Harbor to a series of 50'–100' deep injection wells, located uphill from Buildings1,2,3,&4, within the cofferdam perimeter.
    * Water from the injection wells flows around the corium, keeping it cool and stable, and back into the Harbor, where it is cooled for recirculation.
    The ongoing contamination of the Pacific Ocean must be stopped now.
    This will be a costly project. But what is the cost of the destruction of the Pacific Seafood Industry?

  • Jay

    BTW of the graph presented : even a high-school student would realize that the graph is not just messy but it doesn't Tell the real story : the student would Connect the dots , litterary , so now the graph will display Lines like tight-packed saw-tooth/accordeon spikes that would grab the attention …

  • robu

    Connecting the dots will make the graph look nice but doesn't tell the correct story. The early part of the chart shows a very controlled situation of . The latter part shows that something has definitely changed. The fact that the reading swings by several orders of magnitude likely points to some sort of error in the measurement strategy or noise that is uncontrolled. Measurement location 3l is near much of the structures and could be affected by dust and debris falling into the water. Was there some new activity on the site near the sampling location beginning in February or March of 2012?

    If you look at the data from location ULD, you see that the curves are more well behaved.