Cosmic rays and earthquakes

[Genady]

In this study the authors found a significant correlation: global strong seismic activity followed about two weeks after detection of variations in cosmic rays. Causal connection is not clear, but the authors suggest either effects of massive movements of the liquid iron in the Earth core, or some effects of the Sun. They have noticed some additional correlations and periodicity, but these need more data.

[2204.12310] Observation of large scale precursor correlations between cosmic rays and earthquakes (arxiv.org)

 

[MigL]

I can imagine movements of the Earth's core affecting its magnetic field, with resultant variation in its ability to 'screen' cosmic rays.

[WAMF]

I did geography. Earthquakes occur in the crust and upper mantle, only a maximum of 500miles deep. You then have to travel through the mesosphere, which is 1800 miles of rigid material. Before reaching the liquid core.

Would it effect the field. Maybe. It has to be a pretty big quake.

Theres you free geography lesson.

 

Edited April 27, 2022 by WAMF
Made a mistake

[Genady]

9 minutes ago, WAMF said:

I did geography. Earthquakes occur in the crust and upper mantle, only a maximum of 500miles deep. You then have to travel through the mesosphere, which is 1800 miles of rigid material. Before reaching the liquid core.

Would it effect the field. Maybe. It has to be a pretty big quake.

Theres you free geography lesson.

 

Their picture is that movements in the core cause changes in both the gravitational field and the geomagnetic field. The changes in geomagnetic field affect the cosmic rays behavior very fast. The changes in gravitational field affect the movements in the crust, but this takes time, thus the two weeks delay.

Edited April 27, 2022 by Genady