Absence of evidence is not Evidence of absence.

With all random events there are contributory factors and not all factors will have been significant in any one instance.

What you are saying when you say there is no evidence is more accurately "statistically indeterminate" (your threshold)
But statistical answers depend on the question you ask. And by definition you are into philosophical territory. Ask a different question and you look at it differently. Blinkers off helps.

According to the New Scientist, there will be more Earthquakes because of Global Warming. And they report on such research. I am sure there are those of this parish that will refute that - please submit your thesis to them, first!

Seismic noise causes quakes, sometimes we call it "aftershocks". And we call it noise for a very, very, very good reason. Lack of evidence! Or the will to collect it more like.