For those who have not yet learned of the oceanic research leading to the discovery of a large uranium reactor in the earth's core, here is a little search info to get you started
vast uranium field serves as natural reactor
Keay Davidson, Chronicle Science Writer
Monday, November 29, 2004
Researchers are preparing to prove the discoveries of San Diego geologist, J. Marvin Herndon, who has found a huge, natural nuclear reactor or "georeactor" -- a vast deposit of uranium several miles wide -- at Earth's core, thousands of miles beneath our feet. Herndon and many others believe it explains otherwise puzzling phenomena of planetary science, such as fluctuations in the intensity of Earth's magnetic field. "Herndon's idea about (a reactor) located at the center of the Earth, has opened a new era in planetary physics," said four Russian scientists at Moscow's Institute for Nuclear Research and Kurchatov Institute in a Jan. 28 paper published online.
It might sound bizarre, the very idea of a "natural" nuclear reactor -- a geological version of commercial nuclear power plants such as Pacific Gas and Electric Co.'s Diablo Canyon plant near San Luis Obispo. The reactor at the Earth's core is just a much bigger and deeper version of an extinct natural nuclear reactor that scientists discovered in a uranium mine in Gabon, Africa, in 1972.
The Gabon reactor consists of geological deposits of uranium that, being radioactive, naturally emit subatomic particles called neutrons. These neutrons split the nuclei in adjacent uranium atoms, causing them to emit more neutrons and, thus, to split even more uranium atoms -- in effect, it's a slow-speed chain reaction. Research in the 1970s revealed that the Gabon reactor operated intermittently for a few million years about 2 billion years ago.
Scientists have long known the planet's core is divided into a solid and liquid part composed largely of iron, the liquid circulation of which powers Earth's magnetic field. They have not thought of the core as a repository for uranium, because uranium was not understood until 1945. Although the inevitability of uranium in the core was proposed in 1939 by scientist Walter Elsasser, on the basis that it is the heaviest naturally occurring element, so it would migrate to the core via gravity.
Herndon has demonstrated how a uranium georeactor in Earth's core explains reality better than older scientific ideas, by providing more convincing ways to:
-- Explain the ratios of helium isotopes emitted from volcanoes in Iceland and Hawaii. Those ratios are consistent with the ratios of helium isotopes emitted by a nuclear reactor.
-- Explain why planets such as Jupiter emit far more heat than they absorb from the sun. Herndon thinks they, too, have natural nuclear reactors at their cores. (Because heat is continually generated by the decay of radioactive elements in Earth's crust and mantle -- the regions above the core -- scientists are uncertain whether Earth emits more heat than it receives from the sun.)
-- Explain variations in the intensity of Earth's magnetic field, which fluctuates over time. Herndon has shown that in the core, the georeactor drives the motions of the liquid iron that creates the magnetic field. But the georeactor varies in activity levels over time. Those activity variations, he believes, might explain intensity variations in Earth's magnetic field.
Now, Rob de Meijer and associates at the Nuclear Physics Institute in Groningen, the Netherlands, are planning to demonstrate Herndon's proposals. They're drawing blueprints for a large device that could detect ghostly particles called antineutrinos that have escaped from Earth's core. When put into operation, it will capture antineutrinos that would fly through the roughly 4,000 miles of solid rock and emerge at the Earth's surface.
The European scientists have proposed drilling a shaft more than 1,000 feet deep into the island of Curacao in the Caribbean. They hope to lower into the shaft devices called photomultipliers, which could detect particles from the hypothetical deep-Earth georeac