The Earth is ringing like a bell

More than 2 weeks after the Chile earthquake (Mw=8.3), the Earth is still ringing like a bell. The picture shows the free oscillation 0S0 ringing at a period of 20.6 minutes as observed on the superconducting gravimeter iGrav of Rochefort. The Earth will ring for some more weeks…

Chili_2015

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