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Seawater | Home Home Search Primary Menu Skip to contentWell-nighInFORMal E-News InFORM Scientists InFORMal Scientists InFORMal Science Photos Partners InFORM Monitoring InFORMal E-News MethodsResiderScience Gamma Spectroscopy Marine Biota Monitoring Methods for Other Radionuclides (WHOI CMER) Biota Oceanic Coastal Archived Results Radiation Research By Location Japan Fukushima NW Pacific N Pacific NE Pacific British Columbia North America Chernobyl By Sample Type Algae Atmospheric Human Marine Life Model Plants & Fungi Seawater Sediment By Isotope Cesium Iodine Plutonium Polonium Potassium Strontium Tellurium Uranium Xenon Presentations & Media Presentations Media Interviews Resources InFORMing Research FAQ Radiological Monitoring at the Radiation Protection Bureau of Health Canada IAEA Inter-laboratory Comparison Report 2014-2016 Official IAEA Report on the Fukushima DaiichiWreckingUNSCEAR 2017 Report on Levels and Effects of Radiation Exposure Methods for Other Radionuclides (WHOI CMER) Safety lessons learned from Fukushima: Part 1 – National Acadamies Report Safety lessons learned from Fukushima: Part 2 – National Acadamies Report Health Canada Observations Post-Disaster Canadian Radiological Monitoring Network Naturally Occurring Radioactive Materials Guidelines Search for: Category Archives: Seawater Cesium, Fukushima, Japan, Marine Life, Peer Reviewed, Plutonium, Seawater, Sediment, Strontium IAEA Affirms Japan’s Fukushima-Related Radioactivity Monitoring October 11, 2017 dr.jonathan.kellogg Leave a scuttlebutt by Tim Hornyak 11 October 2017 Originally published by Eos, a periodical of the American Geophysical Union Laboratories outside Japan have validated the results. Marine radioactivity levels from the nuclear disaster have fallen, but questions remain years without the meltdown.Protractreading IAEA Affirms Japan’s Fukushima-Related Radioactivity Monitoring → Advertisements Environmental MonitoringFukushimaIAEATEPCO British Columbia,ResiderScience, Location, Sample type, SeawaterResiderScientists Sampling for Fukushima Contamination in Port Renfrew BC (August 2016) November 3, 2016 fukushimainform Leave a scuttlebutt by Jay T. Cullen Last evening I spoke at the monthly meeting of Surfrider Vancouver Island, one of InFORM’s non-governmental organization partners, to provide them with an update on our most recent results and progress.  Surfrider VI helps to coordinate our resider science volunteers who sample coastal seawater every month to monitor for Fukushima derived contamination withal our beaches from Victoria in the south to Lax Kw’alaams in the north of BC.  Surfrider VI is primarily responsible for sampling in Port Renfrew BC which is on the southwest tailspin of Vancouver Island. I was pleasantly surprised by Lynn Wharram (Volunteer Coordinator and Combing theTailspinBCU team lead) who had produced a short video chronicling her family collecting InFORM’s August 2016 seawater sample from the dock near the Port Renfrew Hotel.  You can watch the video below. You can read increasingly well-nigh our resider science program methods here, our NGO partners here , and our resider science volunteers here. Thanks then to our volunteers and to Surfrider VI for all the work they do. Go and trammels them out if you are interested in ocean health (and surfing).   Cesium, Fukushima, Japan, N Pacific, NE Pacific, NW Pacific, Peer Reviewed, SeawaterUnshutAccess Review of Fukushima Radionuclide Source Term, Fate and Impact in Pacific July 12, 2016 dr.jonathan.kellogg 1ScuttlebuttSchematic of Fukushima Daiichi sources of 137-Cs from Buesseler et al. (in press). Atmospheric fallout (1) and uncontrived ocean discharges (2) represent total petabecquerels (PBq = 10^15 Bq) released in the first month of the meltdowns. Groundwater fluxes (3) and river runoff (4) are injudicious ranges for the first year in terabecquerels (TBq = 10^12 Bq), a unit 1,000 times smaller than the PBq used for fallout and uncontrived discharge. Details on source term estimates can be found in the paper (http://www.annualreviews.org/doi/abs/10.1146/annurev-marine-010816-060733). (Buesseler et al. 2017) by Jay T Cullen The purpose of this post is to bring to the sustentation of readers here a review of the misogynist measurements and science based investigations of the Fukushima Daiichi Nuclear Power Plant (FDNPP) and its impact on the Pacific Ocean ecosystem and public health. This post is part of an ongoing effort to summarize scientifically rigorous information well-nigh the disaster for interested readers. The new paper is a product of a working group on radioactivity in the ocean convened by the Scientific Committee on Ocean Research (SCOR) an international non-governmental non-profit organization. I highly recommend this paper for anyone who wishes to largest understand what the international scientific polity has found well-nigh the marine release, fate and impact of FDNPP-derived radionuclides in the marine environment.  The working group was made up of 10 experts from 9 variegated countries, including Japan, and published the unshut wangle paper in Annual Reviews.  The main findings of the review were as follows: The value of 137Cs released from the plant was ~50-fold less than the fall out from nuclear weapons testing in the 20th century and ~5-fold lower than that released from Chernobyl in 1986. Total releases from Fukushima are similar to the discharges of 137Cs from the nuclear fuel reprocessing plant Sellafield in the UK Initial releases in the weeks to months without the disaster which began on March 11, 2011 dwarf those from aggregated ongoing releases from the plant site The majority of radionuclide releases ended up in the Pacific Ocean with most deposition and input occurring tropical to the FDNPP Current range of estimates of the total 137Cs ocean source term are 15-25 PBq (PBq = 1015 Becquerel where a Bq is one nuclear waste event per second). While many other radionuclides were released from FDNPP, the most likely isotopes to represent a health risk to the marine ecosystem and public are those of Cs given their longer half-lives for radioactive waste (134Cs = ~2 yrs; 137Cs = ~30 yrs) and higher relative zillions compared to other isotopes of snooping in the FDNPP source term Because Cs is very soluble it rapidly sparse in the ocean without the disaster given mixing, transport and dilution by ocean currents.  Peak levels of 137Cs occurred tropical to the plant in 2011 where worriedness concentrations near FDNPP was tens of millions of times higher than surpassing the accident. By 2014 137Cs concentrations in the inside North Pacific was well-nigh six times the remaining weapons testing fallout and well-nigh 2-3 times higher than prior fallout levels in the northeast Pacific near to North America. Most of the fallout remains well-matured in the top few hundred meters of the ocean. Measurements stuff made by the Fukushima InFORM project indicate that maximum 137Cs levels off the North American tailspin are likely to occur this year surpassing unthriving to levels associated with preliminaries nuclear weapon testing surpassing the wrecking by well-nigh the end of this decade There are unlikely to be measurable effects on marine life with the exception of coastal areas very tropical to FDNPP immediately without the disaster. Monitoring of fish species in Fukushima Prefecture show that well-nigh 50% of samples in coastal waters had radiocesium levels whilom the Japanese 100 Bq kg-1 limit, but that by 2015 this had dropped to less than 1% measuring over the limit.Upperlevels protract to be found in fish virtually and in the FDNPP port Given levels in seawater and marine organisms measurable impacts to human health through contact with the ocean and the consumption of seafoods are very unlikely There are many informative graphics and moderately technical summaries of misogynist studies found in the new paper.  The authors highlight the difficulty of monitoring radionuclides in the ocean  given the dynamic nature of the sea and logistical challenges presented by the temporal and spatial scales and low levels of FDNPP derived contamination going forward.  In wing to providing ongoing assessments of risk to the environment from the disaster it is likely that useful information well-nigh ocean diffusion will be obtained through unfurled monitoring efforts. 134-Cs137-CsEnvironmental MonitoringFukushimaOceanographyPacific Cesium, Fukushima, Japan, Marine Life, Peer Reviewed, Seawater, Strontium Fukushima Radionuclides in Pacific: Doses to Japanese and World Public Unlikely to Cause Health Damage March 25, 2015 fukushimainform 1ScuttlebuttBy Jay T. Cullen The purpose of this post is to summarize a the most recent, peer reviewed scientific study to examine the likely impact of Fukushima contamination of the North Pacific on human health. The blog is part of a standing series that seeks to communicate the results of scientific studies aimed at determining the impact of the triple meltdowns at the Fukushima Dai-ichi nuclear power plant (FDNPP) on ecosystem and public health. Povinec and Hirose’s recent paper in Scientific Reports examined the variation in Fukushima derived 90-Strontium (90Sr half life 28.8 years), 134-Cesium (134Cs half life ~2 years) and 137-Cesium (137Cs half life ~30 years) in seawater and biota offshore of the FDNPP and in the northwest Pacific. These isotopes are most likely to represent radiologically health risks to consumers of Pacific seafood given their propensity to concentrate in organisms and, in the specimen of 90Sr and 137Cs, their longevity in the environment. Doses to the Japanese and world population were unscientific and compared to doses owing to naturally occurring isotopes present in food. Doses from supplies unprotected in coastal waters right next to the FDNPP to 20 km offshore were similar to doses from naturally occurring isotopes (primarily 210Po) while doses from the consumption off fish unprotected in the unshut northwest Pacific were much lower than natural doses. In each specimen the individual doses are well unelevated levels where any negative health effects would be measurable in Japan or elsewhere.Protractreading Fukushima Radionuclides in Pacific: Doses to Japanese and World Public Unlikely to Cause Health Damage → 134-Cs137-CsDoseEnvironmental MonitoringFishFukushimaHiroseJapanPovinecseawaterStrontium Cesium, NW Pacific, Peer Reviewed, Seawater, Strontium Dramatic Decrease of Fukushima Derived Radionuclides in the Northwest Pacific Ocean 2011-2012 February 26, 2015 fukushimainform 5 Comments By Jay T. Cullen A schematic view of the insemination and subduction of mode waters in the North Pacific The purpose of this diary is to report on a recently published (Jan 2015) open-access, peer reviewed study which examined the activities of 137Cs (half life 30.2 yr), 134Cs (half life ~2.1 yr) and 90Sr (half life ~28.8 yr) in the northwest Pacific off the coasts of Japan and China. The diary is part of a ongoing effort to communicate the results of scientific research into the impact of the Fukushima Dai-ichi nuclear disaster on environmental and public health. Men and colleagues report on how activities of these fission produced isotopes reverted between three research expeditions in June 2011, December 2011 and June 2012. Activities in seawater decreased dramatically through time for all three isotopes resulting with very upper release rates measured from the Fukushima site in March-April 2011 followed by ongoing but many orders of magnitude (10,000 – 100,000 fold) lower releases from the site thereafter. By 2012 the impact of the Fukushima releases could be still be detected in most samples for Cs isotopes however 90Sr distributions were much increasingly uniform with the highest measured worriedness only slightly whilom the pre-Fukushima background. These results are resulting with: the relatively small source term for 90Sr from compared with the Cs isotopes from Fukushima as unswayable by measurements of air, soil and water without the disaster the much lower Fukushima derived activities for these isotopes in the eastern Pacific off of North America stuff measured given waste and mixing of the contamination as it is transported by ocean currentsProtractreading Dramatic Decrease of Fukushima Derived Radionuclides in the Northwest Pacific Ocean 2011-2012 → 134-Cs137-Cs90-SrFukushimaJapanMenMode waterOceanicPacificseawater Posts navigation 1 2 3 Next → View Fukushima-InFORM-257383817784613’s profile on FacebookView @FukushimaInFORM’s profile on TwitterView UCRqxVIr3s5Yc-djXahyBunA’s profile on YouTube Recent Posts Voyage Reflections Friday the 13th was the Luckiest Day Ever Into the Storm Advertisements Funded by Create a self-ruling website or blog at WordPress.com. Privacy & Cookies: This site uses cookies. 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