This may well be the signature of an internal planetary core similar to the core of the SUN. What has been detected are high level neutrinos. This is predicted by my own work it so is no surprise. What is interesting is that it coincides with closeness to the pole. This begs the question of what is happening at the North Pole, though a blanket of water serves to absorb them.
Reading all this it is well to recall that our ability to detect anything is approaching zero in terms of even the Standard Model products let alone when i conjecture dark matter constructs using neutral electron pair objects, all at the bottom of the scaling. Imaging detecting a complex molecule that lacks a charge and is also not reactive at all. Even now we are challenged.
Zooming scales down to the electron level and we have nothing to work with already. Forget about those neutral neutrino.. .
Mysterious particles spewing from Antarctica defy physics