Radioactive waste, baby bottles and Spam: the deep ocean has become a dumping ground
The ocean’s depths are not some remote alien realm, but are in fact intimately entangled with every other part of the planet. We should treat them that way
by James Bradley. Guardian 12 Mar…….
“…………………………………………………………………………………………..The ocean’s depths have also been used as the final resting place for large amounts of nuclear material.
A 2019 study found at least 18,000 radioactive objects scattered across the bottom of the Arctic Ocean, many of them dumped there by the Soviet Union. These objects include vessels such as the K-27, the 110-metre nuclear submarine powered by an experimental liquid-metal-cooled reactor, which was scuttled in 1982 with its reactor still on board (when the explosive charges that were supposed to sink the K-27 failed to fully detonate, it had to be rammed with a tug); the wreck of the K-141 Kursk, which sank in the Barents Sea in 2000 during a naval exercise, killing all 118 on board and bearing its reactor and fuel to the bottom; and the K-159 attack submarine, which sank while being towed near Murmansk in 2003 with 800kg of spent uranium fuel on board. The head of Norway’s Nuclear Safety Authority says it is only a matter of time before these objects begin to release their toxic legacy into the water; others have called the situation a “Chornobyl in slow motion on the sea floor”.
While the Soviet Union dumped more nuclear waste on the sea floor than any other country, it was certainly not alone. Between 1948 and 1982, the British government consigned almost 70,000 tonnes of nuclear waste to the ocean’s depths, and the US, Switzerland, Japan and the Netherlands are just a few of the nations that have used the ocean to dispose of radioactive material, albeit in much smaller quantities. And while international treaties now prohibit the dumping of radioactive material at sea, the British government is exploring plans to dispose of up to 750,000 cubic metres of nuclear waste, including more than 100 tonnes of plutonium, beneath the sea floor off Cumbria. British officials argue this sort of geological disposal offers a way of keeping waste stable and secure over hundreds of thousands of years, although incidents such as the 2014 leak of radioactive material at a waste disposal facility half a kilometre beneath salt beds in New Mexico suggests that like many of the assurances offered by the nuclear industry, this claim should be approached with great caution.
The dumping of nuclear waste in the ocean is only one part of a far larger story of carelessness and greed. Human waste in the form of plastics and other objects is everywhere in the deep ocean, a fact that is made brutally apparent by the Japan Agency for Marine-Earth Science and Technology’s Deep-sea Debris Database, which documents the presence of tyres, fishing nets, sports bags, mannequins, beach balls and baby’s bottles spread across the sea floor at depths of many thousands of metres. In some regions, the number of such objects exceeds 300/sq km.
This tide of garbage has even reached the deepest and most remote parts of the ocean: …………………………………………………………………………………….
Possibly more disturbing, though, is the growing accumulation of microplastics in the ocean depths………………………………………………..
Nor is plastic the only thing that drifts downwards. In 2019 Chinese scientists discovered radioactive carbon-14 from the detonation of nuclear bombs in the 1940s and 50s in the bodies of amphipods living at the bottom of the Mariana Trench, borne into the deep not by ocean circulation, but in the rain of organic matter from above. More recent studies have found radioactive caesium from the Fukushima nuclear disaster in sediment more than 7,000 metres down in the Japan Trench……………………………………………………….. more https://www.theguardian.com/environment/2024/mar/12/radioactive-waste-baby-bottles-and-spam-the-deep-ocean-has-become-a-dumping-ground
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