It’s possible, but I’d also like to see it peer reviewed.
If it’s the weight of the water that is responsible, I find it odd that the earthquake would be triggered at a time when the reservoir level was low.
There are a wide-variety of papers on reservoir-induced earthquakes in peer-reviewed journals.
It’s fairly well documented in actual events. None have remotely approached the size of this quake, and whether it’s true in this specific quake is open to question.
Issat right?....Well, I find it silly...that [Blah]