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Antarctica shaking every day

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The source of mysterious earthquakes shake Antarctica on twice a day, was one of the glaciers. Instead of a uniform sliding into the sea, he constantly , moving jerkily to 20-30 centimeters every 12 hours. Scientists believe that the reason for this frequency - sea tides. as revealed in the recent past, there is a place on Earth where earthquakes occur on twice a day - this is West Antarctica. Customary earthquake lasted only a few seconds, leading to violent shaking the earth's crust. Earthquakes, who watched Uins, lasted from 10 to 23 minutes, then there were another hundred-times slower. The intensity of jolting it does not exceed 2-3 score. As a rule, to notice such signals are needed seismographs - because even high buildings, which could swinging chandeliers, in West Antarctica not. Now, no longer seems surprising that the epicenter of the earthquake is located exactly where the ice is changing over, with more or less continuous to move jerkily. But it was not the first visitor of mind scientists conjecture. So far, many believed that the seismic signals from glaciers occur when from their loom over the sea edges sliver regular iceberg. As it turned out, it is not. According to scientists, the cause of earthquakes - the resistance of a particularly thorny plot, which slide glacier. Incidentally, the sea, scientists on the assumption that it plays a key role in the frequency of earthquakes. A sea except the Sun and the Moon, which raises ocean tides. According to the model Uinsa, during high tide immersion in the Ross Sea and its glacier ice Uillansa slightly lifted, preventing natural slide of ice upstream. Meanwhile, the upper, located above the epicenter of the earthquake, part of the glacier, continues napirat. As in the present earthquake, strain accumulates until not having suitable conditions for his release. In the case of ice, trapping it - slightly lower strat of the glacier move, ice and makes regular leap down. Although difficult to think of some other natural for Antarctica natural process, which has a 12 - hour intervals, tides us to earthquakes remains conjecture. While it is rather difficult to verify - Considering the 20 - minute duration , pinpoint the time of its beginning and end difficult. Frequency same tides because of the mutual motion Moon and the Sun across the sky about changes in the same limits. In addition, it was not clear as to simulate complex processes voltage transmission from the sea up to 200 - km glacier.
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