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Posts Tagged ‘Pacific Ocean’

The Pacific Ocean Has Become Acidic Enough to Dissolve Sea Snails’ Shells: Acidification Is Happening Sooner & On A Larger Scale Than Scientists Predicted; Coastal Biomes Under Threat

In Uncategorized on May 5, 2014 at 11:28 am

First evidence of marine snails from the natural environment along the U.S. West Coast with signs that shells are dissolving. (Credit: NOAA)Oldspeak: “A new study, among the first to examine how the process called ocean acidification impacts marine life, has confirmed that about half of all the pteropods off the west coast are fighting off the acid burn. It builds on previous work that has shown pteropods dissolving in other waters; it’s a disturbing trend, considering they’re a key link in the oceanic food chain….research determined that “large portions of the shelf waters are corrosive to pteropods in the natural environment…This is worrisome, not just because it’s kind of horrifying on a micro-level—imagine the air that surrounds you slowly eroding, say, your cartilage—but because these sea snails are a major food source for other important species like salmon, herring, and mackerel. Their disappearance would radically transform the coastal biome.” -Brian Merchant

It’s happening now. I’m not speculating about the distant future. The first crack in our global life support system is widening now and we are about to experience our first major systems failure….We are on the threshold of the first major eco-system collapse of the Homocene…What the great majority of people do not understand is this: unless we stop the degradation of our oceans, marine ecological systems will begin collapsing and when enough of them fail, the oceans will die… And if the oceans die, then civilization collapses and we all die… It’s as simple as that.”  -Captain Paul Watson

“It really is that simple. The degradation of our oceans is not stopping, it is in fact accelerating. The Pacific Ocean will continue to be transformed into a radioactive acid bath. Marine ecological systems will continue to collapse, and that will be that.  We’re fucked. There is no fixing this. There is no avoiding extinction.” -OSJ

 

Related Story:

NOAA-led researchers discover ocean acidity is dissolving shells of tiny snails off the U.S. West Coast

 

By Brian Merchant @ Vice Magazine:

Meet the tiny, translucent “sea butterfly,” whose home is currently being transformed into an acid bath. Off the US’s west coast, there are anywhere between 100 and 15,000 of these free-swimming sea snails per square meter. And the oceans are beginning to dissolve the tiny shells right off their backs.

A new study, among the first to examine how the process called ocean acidification impacts marine life, has confirmed that about half of all the pteropods off the west coast are fighting off the acid burn. It builds on previous work that has shown pteropods dissolving in other waters; it’s a disturbing trend, considering they’re a key link in the oceanic food chain.

The world’s oceans have absorbed a third of humans’ carbon emissions, a process that increases their acidity. Scientists have long noted the changing chemistry of the waters, and voiced concern that this leaves calcium-based creatures, like coral and pteropods, extremely vulnerable. Now, it appears, they have proof.

“These are some of the first insights into how marine creatures are affected by acidification,” Dr. Nina Bednarsek told me in a phone interview. She’s the lead author of the National Oceanographic and Atmospheric Administration study, which was just published in the Proceedings of the Royal Society BThe research determined that “large portions of the shelf waters are corrosive to pteropods in the natural environment.”

“Fifty percent of those pteropods are affected by acidification,” Bednarsek said. “It’s a lot—more than we expected.” And sooner. She tells me that acidification is happening sooner and on a larger scale than scientists predicted. “This is just an indication of how much we are changing the natural environment,” she said.

The study estimates “that the incidence of severe pteropod shell dissolution owing to anthropogenic [ocean acidification] has doubled in near shore habitats since pre-industrial conditions across this region and is on track to triple by 2050.” In other words, thanks to human carbon pollution, twice as many marine creature shells are dissolving as were before the industrial era. And three times as many will be dissolving by mid-century.

Image: NOAA

This is worrisome, not just because it’s kind of horrifying on a micro-level—imagine the air that surrounds you slowly eroding, say, your cartilage—but because these sea snails are a major food source for other important species like salmon, herring, and mackerel. Their disappearance would radically transform the coastal biome.

Acidification primarily effects the snails’ outer shell layer, and is especially dangerous to juveniles, which are born with very tiny shells. The outer shell, which is comprised of “a more soluble form, they are just dissolved away. In that sense, shells are getting more thin,” Bednarsek said. “It is just a few micron in juveniles. If you dissolve that, the whole shell can just disappear in two months time.”

This means they have to use precious energy to try to build shells with less soluble materials, while the absence of a shell restricts mobility and leave them vulnerable to infection. So is this an existential threat to a highly prevalent species?

“Yes, basically,” Bednarsek said.

“By 2100, 50 percent of the oceans would no longer be viable for pteropods,” Dr. Richard Freely, the study’s co-author, told me, if we continue emitting carbon pollution apace. And that’s exactly what’s expected to happen.

“Estimates of future carbon dioxide levels, based on business as usual emission scenarios, indicate that by the end of this century the surface waters of the ocean could be nearly 150 percent more acidic, resulting in a pH that the oceans haven’t experienced for more than 20 million years,” NOAA estimates.

In other words, the oceans are on track to become an acidic mess, and plenty of things that lived in them for millions of years may simply no longer be able to. The future, it seems, is a place where sea snails’ shells begin dissolving in acid as soon as they’re born. And then, eventually, a place without sea snails.

TEPCO Readies For Extremely Dangerous, Never Before Attempted Operation To Remove 400 Tons Of “Spent” Nuclear Fuel At Fukushima

In Uncategorized on November 4, 2013 at 3:34 pm

Poolside: The spent-fuel pool of reactor 4 at the crippled Fukushima No. 1 nuclear power plant

Oldspeak: “The operation to begin removing fuel from such a severely damaged pool has never been attempted before. The rods are unwieldy and very heavy, each one weighing two-thirds of a ton, The worst-case scenario could play out in death to billions of people. A true apocalypse. It will be one of the worst, but most important jobs anyone has ever had to do. And even if executed flawlessly, there are still many things that could go wrong.Christina Consolo, fallout researcher

“Should the attempt fail, a mishandled rod could be exposed to air and catch fire, resulting in horrific quantities of radiation released into the atmosphere. The resulting radiation will be too great for the cooling pool to absorb as it simply has not been designed to do so.

In the worst-case scenario, the pool could come crashing to the ground, dumping the rods together into a pile that could fission and cause an explosion many times worse than in March 2011.” -RT

The complex has recently seen a series of setbacks, including highly toxic water gushing from storage tanks into the Pacific. The incidents, many of them caused by human error, have added to concerns about operator Tepco’s ability to safely dismantle the No. 1 plant” –Japan Times

“Ummm…. this can’t be good. Let me get this straight. TEPCO is going to attempt an extremely dangerous and never before tried operation that it originally planned to do in 2 years in 1 YEAR? So they’re going to rush through the job, and expect everything to go off (pun intended) without a hitch?! Given its record of mismanagement, unpreparedness, false information, human error and breathtaking incompetence handling this ongoing and ever worsening ecological and environmental catastrophe, i don’t understand why  responsibility is still being left to TEPCO to do anything!  Why would anyone with knowledge of the situation have ANY confidence that TEPCO could execute this operation successfully?!?! Sure they’re accepting international help, 2 years later, but this is an unprecedented event. A triple-meltdown, where nuclear cores have been lost, and there is no existing means to contain the perpetual radiation release. Expect a potentially life altering fuck up to kill billions of people. There are just too many ways this shitshow can go sideways real fast. ” –OSJ

Related Story

U.S. To Help With No. 1 Shutdown

Dangerous Operation Planned For Fukushima Plant

By RT:

Fukushima operator TEPCO is getting ready for its toughest and the most dangerous clean-up operation. In November it will try to remove 400 tons of spent fuel from plant’s Reactor No. 4. But even a little mistake may result in a new nuclear disaster.

The operation is scheduled to start in the beginning of November and be completed by around the end of 2014.

Under normal circumstances, the operation to remove all the fuel would take about 100 days. TEPCO (Tokyo Electric Power Co) initially planned to take two years, but reduced the schedule to one year in recognition of the urgency, as even a minor earthquake could trigger an uncontrolled fuel leak.

During this period TEPCO plans to carefully remove more than 1,300 used fuel rod assemblies, packing radiation 14,000 times the equivalent of the Hiroshima nuclear bomb, from their cooling pool.

The base of the pool where the fuel assemblies are situated is 18 meters above ground and the rods are 7 meters under the surface of the water.

TEPCO’s first task is to remove the debris from the Reactor No. 4 fuel pool.

Then, one by one, the fuel rods will be removed from the top store of the damaged building using a crane suspended above the crippled reactor.

Installation status of fuel removal cover of Unit 4 (Image from tepco.co.jp)Installation status of fuel removal cover of Unit 4 (Image from tepco.co.jp)

Previously a computer-controlled process, this time it has to be done completely manually. And this is what makes this removal operation extremely dangerous.

The fuel rods must be kept submerged and must not touch each other or break.

“The operation to begin removing fuel from such a severely damaged pool has never been attempted before. The rods are unwieldy and very heavy, each one weighing two-thirds of a ton,” fallout researcher Christina Consolo earlier told RT.

Should the attempt fail, a mishandled rod could be exposed to air and catch fire, resulting in horrific quantities of radiation released into the atmosphere. The resulting radiation will be too great for the cooling pool to absorb as it simply has not been designed to do so.

In the worst-case scenario, the pool could come crashing to the ground, dumping the rods together into a pile that could fission and cause an explosion many times worse than in March 2011.

“The worst-case scenario could play out in death to billions of people. A true apocalypse,” Consolo said.

Reactor No. 4 contains 10 times more Cesium-137 than Chernobyl did. This lets scientists warn that in case of another nuclear disaster, it will be the beginning of the ultimate catastrophe of the world and the planet.

“It will be one of the worst, but most important jobs anyone has ever had to do. And even if executed flawlessly, there are still many things that could go wrong,” Consolo said.

The World Nuclear Report, released in July 2013, said “the worst-case scenario” will require evacuation of up to 10 million people within a 250-kilometer radius of Fukushima, including a significant part of Tokyo.

Although some experts are skeptical, TEPCO is confident the operation will be a success. Last year two fuel rods were successfully removed from the pool in a test operation, but back then rod assemblies were empty and posed a far smaller threat.

The operation will be just one installment in the decommissioning process for the plant, and is forecast to take about 40 years and cost $11 billion.

TEPCO, responsible for the clean-up, is struggling to cope with the aftermath of the nuclear disaster, but with the crisis over radiation-contaminated water at the plant, it has been criticized for its ad hoc response to the disaster. In August TEPCO pleaded for overseas help to contain the radioactive fallout, after 18 months of trying to control it internally.

The Japanese government was also ordered to take a more active role in controlling the overflow of radioactive water being flushed over the melted reactors in Units 1, 2 and 3 at the plant.

Three of the Fukushima plant’s nuclear reactors were damaged by an earthquake-triggered tsunami on March 11, 2011, which led to a nuclear disaster. The plant has been accumulating radioactive water ever since. The government imposed a 20-kilometer ‘no-go’ zone around the plant area.

28 Signs That The West Coast Is Being Absolutely Fried With Radiation From Fukushima Nuclear Plant

In Uncategorized on October 26, 2013 at 6:39 pm

https://i2.wp.com/media.salon.com/2013/08/FukushimaPlume-tiff.jpg

Oldspeak: “With recent news of a typhoon threatening Fukushima nuclear plant, causing land collapses around the planta 7.3 magnitude earthquake hitting 231 miles off the coast of Japan,  forcing evacuation of workers from the plant, it’s not a matter of if there will be a catastrophic collapse of the spent fuel pool in unit 4, but when. Meanwhile, this ongoing ecological disaster is continuing unabated, with 300 tons of radioactive water flowing into the pacific EVERY DAY which is causing severe and unpredictable damage to the ocean environment. 30 billion becquerels of radioactive cesium and another 30 billion becquerels of radioactive strontium continue to leak into the outer ocean every day. The negative effects are beginning to be seen in wildlife & the environment and humans. it’s a time bomb and it’s still ticking. Japan is obviously not up to the task of containment or clean up. A global response in required. Not silence from government agencies tasked with monitoring & reporting on radioactivity in our environment. Not a virtual media black out.  Not continued acceptance of radioactive produce from the contaminated area. Not allowing the same company whose plant caused the disaster, be in charge of the clean up & containment but mostly cover up of the horrors at the site.” -OSJ

“It is critical that we all understand the true consequences of radiation exposure so that proper monitoring is conducted in all those who were exposed to radioactive fallout. Ultimately, what is at stake is the universal right to a standard of living adequate for the health and well-being of the affected population. This should be the guiding principle in evaluating the health effects of the nuclear catastrophe.” –Physicians For Social Responsibility

 

By Michael Snyder @ Activist Post:

The map below comes from the Nuclear Emergency Tracking Center. It shows that radiation levels at radiation monitoring stations all over the country are elevated. As you will notice, this is particularly true along the west coast of the United States. Every single day, 300 tons of radioactive water from Fukushima enters the Pacific Ocean. That means that the total amount of radioactive material released from Fukushima is constantly increasing, and it is steadily building up in our food chain.
Ultimately, all of this nuclear radiation will outlive all of us by a very wide margin. They are saying that it could take up to 40 years to clean up the Fukushima disaster, and meanwhile countless innocent people will develop cancer and other health problems as a result of exposure to high levels of nuclear radiation. We are talking about a nuclear disaster that is absolutely unprecedented, and it is constantly getting worse. The following are 28 signs that the west coast of North America is being absolutely fried with nuclear radiation from Fukushima…

1. Polar bears, seals and walruses along the Alaska coastline are suffering from fur loss and open sores

Wildlife experts are studying whether fur loss and open sores detected in nine polar bears in recent weeks is widespread and related to similar incidents among seals and walruses.

The bears were among 33 spotted near Barrow, Alaska, during routine survey work along the Arctic coastline. Tests showed they had “alopecia, or loss of fur, and other skin lesions,” the U.S. Geological Survey said in a statement.

2. There is an epidemic of sea lion deaths along the California coastline…

At island rookeries off the Southern California coast, 45 percent of the pups born in June have died, said Sharon Melin, a wildlife biologist for the National Marine Fisheries Service based in Seattle. Normally, less than one-third of the pups would die.   It’s gotten so bad in the past two weeks that the National Oceanic and Atmospheric Administration declared an “unusual mortality event.”

3. Along the Pacific coast of Canada and the Alaska coastline, the population of sockeye salmon is at a historic low.  Many are blaming Fukushima.

4. Something is causing fish all along the west coast of Canada to bleed from their gills, bellies and eyeballs.

5. A vast field of radioactive debris from Fukushima that is approximately the size of California has crossed the Pacific Ocean and is starting to collide with the west coast.

6. It is being projected that the radioactivity of coastal waters off the U.S. west coast could double over the next five to six years.

7. Experts have found very high levels of cesium-137 in plankton living in the waters of the Pacific Ocean between Hawaii and the west coast.

8. One test in California found that 15 out of 15 bluefin tuna were contaminated with radiation from Fukushima.

9. Back in 2012, the Vancouver Sun reported that cesium-137 was being found in a very high percentage of the fish that Japan was selling to Canada…

• 73 percent of mackerel tested
• 91 percent of the halibut
• 92 percent of the sardines
• 93 percent of the tuna and eel
• 94 percent of the cod and anchovies
• 100 percent of the carp, seaweed, shark and monkfish

10. Canadian authorities are finding extremely high levels of nuclear radiation in certain fish samples…

Some fish samples tested to date have had very high levels of radiation: one sea bass sample collected in July, for example, had 1,000 becquerels per kilogram of cesium.

11. Some experts believe that we could see very high levels of cancer along the west coast just from people eating contaminated fish

“Look at what’s going on now: They’re dumping huge amounts of radioactivity into the ocean — no one expected that in 2011,” Daniel Hirsch, a nuclear policy lecturer at the University of California-Santa Cruz, told Global Security Newswire. “We could have large numbers of cancer from ingestion of fish.”

12. BBC News recently reported that radiation levels around Fukushima are “18 times higher” than previously believed.

13. An EU-funded study concluded that Fukushima released up to 210 quadrillion becquerels of cesium-137 into the atmosphere.

14. Atmospheric radiation from Fukushima reached the west coast of the United States within a few days back in 2011.

15. At this point, 300 tons of contaminated water is pouring into the Pacific Ocean from Fukushima every single day.

16. A senior researcher of marine chemistry at the Japan Meteorological Agency’s Meteorological Research Institute says that “30 billion becquerels of radioactive cesium and 30 billion becquerels of radioactive strontium” are being released into the Pacific Ocean from Fukushima every single day.

17. According to Tepco, a total of somewhere between 20 trillion and 40 trillion becquerels of radioactive tritium have gotten into the Pacific Ocean since the Fukushima disaster first began.

18. According to a professor at Tokyo University, 3 gigabecquerels of cesium-137 are flowing into the port at Fukushima Daiichi every single day.

19. It has been estimated that up to 100 times as much nuclear radiation has been released into the ocean from Fukushima than was released during the entire Chernobyl disaster.

20. One recent study concluded that a very large plume of cesium-137 from the Fukushima disaster will start flowing into U.S. coastal waters early next year

Ocean simulations showed that the plume of radioactive cesium-137 released by the Fukushima disaster in 2011 could begin flowing into U.S. coastal waters starting in early 2014 and peak in 2016.

21. It is being projected that significant levels of cesium-137 will reach every corner of the Pacific Ocean by the year 2020.

22. It is being projected that the entire Pacific Ocean will soon “have cesium levels 5 to 10 times higher” than what we witnessed during the era of heavy atomic bomb testing in the Pacific many decades ago.

23. The immense amounts of nuclear radiation getting into the water in the Pacific Ocean has caused environmental activist Joe Martino to issue the following warning

Your days of eating Pacific Ocean fish are over.

24. The Iodine-131, Cesium-137 and Strontium-90 that are constantly coming from Fukushima are going to affect the health of those living the the northern hemisphere for a very, very long time.  Just consider what Harvey Wasserman had to say about this…

Iodine-131, for example, can be ingested into the thyroid, where it emits beta particles (electrons) that damage tissue. A plague of damaged thyroids has already been reported among as many as 40 percent of the children in the Fukushima area. That percentage can only go higher. In developing youngsters, it can stunt both physical and mental growth. Among adults it causes a very wide range of ancillary ailments, including cancer.

Strontium-90’s half-life is around 29 years. It mimics calcium and goes to our bones.

25. According to a recent Planet Infowars report, the California coastline is being transformed into “a dead zone”…

The California coastline is becoming like a dead zone.

If you haven’t been to a California beach lately, you probably don’t know that the rocks are unnaturally CLEAN – there’s hardly any kelp, barnacles, sea urchins, etc. anymore and the tide pools are similarly eerily devoid of crabs, snails and other scurrying signs of life… and especially as compared to 10 – 15 years ago when one was wise to wear tennis shoes on a trip to the beach in order to avoid cutting one’s feet on all the STUFF of life – broken shells, bones, glass, driftwood, etc.

There are also days when I am hard-pressed to find even a half dozen seagulls and/or terns on the county beach.

You can still find a few gulls trolling the picnic areas and some of the restaurants (with outdoor seating areas) for food, of course, but, when I think back to 10 – 15 years ago, the skies and ALL the beaches were literally filled with seagulls and the haunting sound of their cries both day and night…

NOW it’s unnaturally quiet.

26. A study conducted last year came to the conclusion that radiation from the Fukushima nuclear disaster could negatively affect human life along the west coast of North America from Mexico to Alaska “for decades”.

27. According to the Wall Street Journal, it is being projected that the cleanup of Fukushima could take up to 40 years to complete.

28. Yale Professor Charles Perrow is warning that if the cleanup of Fukushima is not handled with 100% precision that humanity could be threatened “for thousands of years“…

Conditions in the unit 4 pool, 100 feet from the ground, are perilous, and if any two of the rods touch it could cause a nuclear reaction that would be uncontrollable. The radiation emitted from all these rods, if they are not continually cool and kept separate, would require the evacuation of surrounding areas including Tokyo. Because of the radiation at the site the 6,375 rods in the common storage pool could not be continuously cooled; they would fission and all of humanity will be threatened, for thousands of years.

Are you starting to understand why so many people are so deeply concerned about what is going on at Fukushima?

West Coast Of North America To Be Hit Hard By Fukushima Radiation That Could Be 10 Times Higher Than In Japan

In Uncategorized on August 27, 2013 at 5:29 pm

https://i0.wp.com/iprc.soest.hawaii.edu/news/marine_and_tsunami_debris/2011/11_04_maximenko_tsunami_debris/map_of_trajectory_med.jpgOldspeak” This ongoing and uncontrolled ecological catastrophe continues, with no end in sight. Untold billions of tons of water are being dumped into the Pacific ocean by the Japanese. The contamination is expected to get worse as time passes and impact Baja California and other North American west coast hotspots. And no one knows how to fix it. “Last year, scientists from the National Oceanic and Atmospheric Administration’s (NOAA) Pacific Marine Environmental Laboratory and 3 scientists from the GEOMAR Research Center for Marine Geosciences showed that radiation on the West Coast of North America could end up being 10 times higher than in Japan“. These are reputable research scientists saying this. Yet, universal silence in state media. Citizens from Hawaii to Alaska to Baja should be demanding information about what’s going on and what’s being done in response to the threat. The civil war in Syria is infinitesimally less threatening to the millions of people to be affected.” –OSJ

By Washington’s Blog:

Radiation Levels Will Concentrate in Pockets In Baja California and Other West Coast Locations

An ocean current called the North Pacific Gyre is bringing Japanese radiation to the West Coast of North America:

North Pacific Subtropical Convergence Zone FDA Refuses to Test Fish for Radioactivity ... Government Pretends Radioactive Fish Is Safe

The leg of the Gyre closest to Japan – the Kuroshio current – begins right next to Fukushima:

Kuroshio Current - Colour show water speed.  Blue slowest; red fastest

While many people assume that the ocean will dilute the Fukushima radiation, a previously-secret 1955 U.S. government report concluded that the ocean may not adequately dilute radiation from nuclear accidents, and there could be “pockets” and “streams” of highly-concentrated radiation.

The University of Hawaii’s International Pacific Research Center created a graphic showing the projected dispersion of debris from Japan (see pic at top)

Last year, scientists from the National Oceanic and Atmospheric Administration’s (NOAA) Pacific Marine Environmental Laboratory and 3 scientists from the GEOMAR Research Center for Marine Geosciences showed that radiation on the West Coast of North America could end up being 10 times higher than in Japan:

After 10 years the concentrations become nearly homogeneous over the whole Pacific, with higher values in the east, extending along the North American coast with a maximum (~1 × 10−4) off Baja California. 

***

With caution given to the various idealizations (unknown actual oceanic state during release, unknown release area, no biological effects included, see section 3.4), the following conclusions may be drawn. (i) Dilution due to swift horizontal and vertical dispersion in the vicinity of the energetic Kuroshio regime leads to a rapid decrease of radioactivity levels during the first 2 years, with a decline of near-surface peak concentrations to values around 10 Bq m−3 (based on a total input of 10 PBq). The strong lateral dispersion, related to the vigorous eddy fields in the mid-latitude western Pacific, appears significantly under-estimated in the non-eddying (0.5°) model version. (ii) The subsequent pace of dilution is strongly reduced, owing to the eastward advection of the main tracer cloud towards the much less energetic areas of the central and eastern North Pacific. (iii) The magnitude of additional peak radioactivity should drop to values comparable to the pre-Fukushima levels after 6–9 years (i.e. total peak concentrations would then have declined below twice pre-Fukushima levels). (iv) By then the tracer cloud will span almost the entire North Pacific, with peak concentrations off the North American coast an order-of-magnitude higher than in the western Pacific.

(“Order-of-magnitude” is a scientific term which means 10 times higher.  The “Western Pacific” means Japan’s East Coast.)

In May, a team of scientists from Spain, Australia and France concluded that the radioactive cesium would look more like this:
And a team of top Chinese scientists has just published a study in the Science China Earth Sciences journal showing that the radioactive plume crosses the ocean in a nearly straight line toward North America, and that it appears to stay together with little dispersion:

On March 30, 2011, the Japan Central News Agency reported the monitored radioactive pollutions that were 4000 times higher than the standard level. Whether or not these nuclear pollutants will be transported to the Pacific-neighboring countries through oceanic circulations becomes a world-wide concern.

***

The time scale of the nuclear pollutants reaching the west coast of America is 3.2 years if it is estimated using the surface drifting buoys and 3.9 years if it is estimated using the nuclear pollutant particulate tracers.

***

The half life of cesium-137 is so long that it produces more damage to human. Figure 4 gives the examples of the distribution of the impact strength of Cesium-137 at year 1.5 (panel (a)), year 3.5 (panel (b)), and year 4 (panel (c)).

***

It is worth noting that due to the current near the shore cannot be well reconstructed by the global ocean reanalysis, some nuclear pollutant particulate tracers may come to rest in near shore area, which may result in additional uncertainty in the estimation of the impact strength.

***

Since the major transport mechanism of nuclear pollutants for the west coast of America is the Kuroshio-extension currents, after four years, the impact strength of Cesium-137 in the west coast area of America is as high as 4%.

Note: Even low levels of radiation can harm health.