until they actually looked for it.
Now, a new study published Feb. 8 in the journal Geophysical Research Letters, has revealed that the earthquake was actually a sequence of five sub-quakes, separated in time by mere minutes. And the third of these mini-quakes — a shallower, "invisible" earthquake hidden in the data and missed by monitoring systems at the time — was an 8.2-magnitude quake responsible for the tsunami.
Lots of things out there to surprise us still.
1 comment:
That is a peculiar wording; ' ... missed by monitoring systems ... '. Unless they include some previously unknown system in that phrasing, I suspect they mean to lessen the blame of data interpreters from mis-reading or understanding the data.
To be fair this is all academic. None but ardent researchers care beyong passing curiosity when or how or what caused the tsunami. Most would quickly lose interest when faced with reams of log data, figures and formula.
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