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A comment on Strange earthquake waves rippled around Earth. Parent comment

Re:Strange earthquake waves rippled around Earth by anon2775 on Thursday November 29, 2018 @02:17AM (#18558636)
Long period waves and their decay signature makes me suspect "water hammering" of a large volume of magma came to an abrupt stop inside a magma chamber or tube.
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Re:Strange earthquake waves rippled around Earth by cryptonector on Thursday November 29, 2018 @12:31PM (#18561929)
Some of the tweets speculate about a magma chamber roof collapse due to the chamber emptying a bit.
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