On Monday, airline passengers were the first to observe the eruption of the just-barely-above-the-water volcano that forms the islands of Hunga Tonga and Hunga Ha'apai, in Tonga. Three days later, a magnitude 7.9 earthquake occurred on the Tonga trench.
Was the timing of these two events just coincidence?
Yes.
Why do I think the events were unrelated? Well:
Earthquakes happen all the time. Thankfully for Tongan residents, I am using a geological definition of "time" here, but still: A major earthquake on a major plate boundary does not require any special explanation.
The earthquake was a…
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