地震の発生とチャンドラ運動

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書誌事項

タイトル別名
  • Earthquakes and the Earth's Chandler Wobble
  • ジシン ノ ハッセイ ト チャンドラ ウンドウ

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説明

The Chandler wobble may be considered to be a succession of free damped nutations of the earth excited randomly in time. Making use of a method to detect reflection impulses in seismic explorations, we calculate the random time series ξ(t) and η(t) corre-sponding to the χ(t) and y (t) terms in polar motions. The results obtained are shown in the attached figures. The arrows in the figures show the time of occurrence of earthquakes of magnitude larger than 8.6. The correlation between the occurrence of large earthquakes and (ξ(t), η(t)) is not so good. This may be due to our use of χ(t) and y (t) data of rather long time interval, about 35 days.

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