Word: regions
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Dates: during 1960-1969
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Small Aftershocks. "The chances are small, but not zero," says Seismologist Lynn Sykes of Columbia's Lamont-Doherty Geological Observatory. He and other scientists think that a less dangerous method of earthquake control might be to pump liquid into a fault region. Such fluids would relieve stresses by acting, in part, as underground lubricants. Yet this method also poses dangers. In the Denver area, for example, recent shocks were apparently triggered by the disposal of chemical wastes in deep underground wells...
...defense of their scheme, the Miami scientists point to a recent study of the seismic effects of 21 underground nuclear tests staged by the Atomic Energy Commission in Nevada, a highly quake-prone region. Though each blast was followed by countless small aftershocks, none reached quake proportions and all were substantially weaker than the original explosion. The AEC is convinced that there is little risk in conducting such tests. It plans to follow up its recent controversial detonation of a 1.2 megaton H-bomb on Amchitka Island in the Aleutians, another major quake zone, with more powerful underground blasts...
...staunchest foreign ally, the British government. Equally important, BP stands to benefit hugely from its oil finds on Alaska's North Slope. BP has discovered reserves estimated at an enormous 5 billion barrels, or about 25% of the total believed to lie under that barren region. Seeking marketing outlets for its crude, a BP subsidiary last March bought approximately 8,250 East Coast filling stations from Sinclair...
...visible light region of this spectrum would show up as color bands, but the invisible ultra-violet rays can be detected only by a special electric tube. In the experiment, this tube acts like a television camera, converting the ultra-violet rays to electric impulses that are transmitted to earth...
...single point, take a picture of the entire sun, or scan an area only 1/15 the size of the sun's visible disc. Where earlier OSO satellites were able to take only one picture of the entire surface every 5 minutes, this telescope can also map a small region every 30 seconds. This allows the astronomers to follow very fast solar reactions in greater detail...