Or influence by the moon just as it pulls on oceans. Lot of liquid magma down there.
Or maybe some once in a rare incident involving coronal mass ejections somehow affecting the core of the planet. Could even be a delayed effect.
One of the More out there theories is that some earthquakes are caused by high energy cosmic particles going through the Earth.
One of the More out there theories is that some earthquakes are caused by high energy cosmic particles going through the Earth.