Sentences with phrase «atmospheric nuclear testing»

Next we took on French atmospheric nuclear testing in the South Pacific.

«Probably among the earliest designations of a coral reef protected area, this site has been subjected to massive military development, high atmospheric nuclear testing, chemical waste disposal, and other threats,» the institute notes.

American opposition to atmospheric nuclear testing helped make possible the 1963 partial test - ban treaty.

Hundred of bombs detonated in the open air (and several more in the ocean) during the heyday of atmospheric nuclear testing — with thousands more tests conducted underground.

The U.S. conducted 210 atmospheric nuclear tests between 1945 and 1962, with multiple cameras capturing each event at around 2,400 frames per second.

But Giacconi and his team at American Science and Engineering in Cambridge, Massachusetts, already had a contract with the Air Force to monitor atmospheric nuclear tests, and he knew the Air Force was hoping to get in on President Kennedy's lunar program.

Researchers at Lawrence Livermore National Laboratory (LLNL) released 62 newly declassified videos today of atmospheric nuclear tests films that have never before been seen by the public.

Nature of Gamma - ray Bursts Gamma Ray Bursts (GRBs) were discovered in 1967 by satellites designed to monitor compliance with the atmospheric nuclear test ban treaty.

That missing radioactivity, originating as fallout from atmospheric nuclear tests during the 1950s and 1960s, routinely provides researchers with a benchmark against which they can gauge how much new ice has accumulated on a glacier or ice field.

Not exact matches

Every person alive on the 71st anniversary of those attacks holds in their flesh radioactive remnants of the nuclear era — a period centered in the early decades of Cold War when nuclear nations conducted atmospheric tests of ever - larger bombs.

Between 1945 and 1962 the U.S. conducted more than 200 atmospheric nuclear weapon tests and captured the detonations on film.

LLNL nuclear weapon physicist Gregg Spriggs is leading a team of film experts, code developers and interns on a mission to hunt down, scan and reanalyze what they estimate to be 10,000 films of the 210 atmospheric tests conducted by the U.S. between 1945 and 1962.

The detonations took place at the nuclear test site in southern Nevada, where between 1951 and 1992 the U.S. government set off 828 underground nuclear tests and 100 atmospheric ones, whose mushroom clouds were seen from Las Vegas, 100 kilometers away.

Critical to the success of the treaty is an ever - growing array of advanced monitoring stations and sensors — 337 facilities in 89 nations when complete — that provides nuclear test detection capabilities by reading even faint atmospheric, seismic, or acoustic signals.

The U.S. conducted a total of 67 nuclear tests (pdf)-- some above the water and some beneath — in the Marshall Islands between 1946 and 1958, when the country halted atmospheric tests (largely due to Castle Bravo).

As a result of this mission and others, all atmospheric testing of nuclear weapons by the United States was stopped.

Pittsburgh may have enjoyed a little more blue sky thanks to Shippingport, but for the rest of us during that era, the sky was raining radioactivity, the fallout from atmospheric nuclear weapons tests.

Fossil fuel combustion has dispersed fly ash particles worldwide, pretty well coincident with the peak distribution of the «bomb spike» of radionuclides generated by atmospheric testing of nuclear weapons, Dr Waters says.

He negotiated the Limited Test Ban Treaty with the Soviets which he was unable to sign because Francis Gary Powers was shot down and the Soviets grandstanded for several months before getting to the banning of atmospheric tests of nuclear weapons.

This leaves around 3 or 4 billion tonnes that are somehow being absorbed by the oceans, the land biosphere, or both.One possibility is that most of the man - made CO2 which does not accumulate in the atmosphere is being absorbed by the oceans... This view is supported by indirect evidence derived from the atmospheric nuclear bomb tests of the 1950s and 1960s.

The reference core top date must be approximately correct, since 3 cm below was the classic isotope «bomb spike» caused by atmospheric nuclear weapons testing in the 1950's.

Cancer has always been, and remains, the ultimate bogeyman of environmentalism, a fixation that reflects how the environmental movement arose from our 1950s fear of nuclear weapons and the carcinogenic radioactive fallout from atmospheric nuclear weapons testing.

When Mr. Moore — who is not a scientist — was with Greenpeace it was mostly devoted to resisting the atmospheric testing of nuclear weapons.

Many members viewed plutonium or radiocarbon traces in sediment from atmospheric nuclear bomb tests as the primary indicator of those changes.

«The above - ground nuclear tests that occurred in several countries between 1955 and 1980 (see nuclear test list) dramatically increased the amount of carbon - 14 in the atmosphere and subsequently in the biosphere; after the tests ended, the atmospheric concentration of the isotope began to decrease.»

Artificial nuclear processes, in particular nuclear fuel reprocessing and atmospheric nuclear weapons tests, have now swamped the natural signal for this isotope.

One other factor over the period post-1945 to 1963 which limited and affected SST observations in the Pacific Ocean were the various nuclear test series, for numerous military, political, physical and biohazard reasons, and the consequential local hydrophysical, hydrobiological, and atmospheric perturbations such testing occasioned.