The Nazca–South American subduction front is one of the most active in the world. We have chosen four zones along this front to do a comparative study on possible different dynamics. Data are public and well tested in the last decades. The methods are original since mutability and Shannon entropy are not always used in this kind of problem, and, to our knowledge, this is the first time they are combined. The north of Chile could be a zone with greater chances of a large earthquake.

Earthquakes are natural hazardous phenomena that can bring death, destruction, economical crisis, migrations and other social implications. This paper aims to understand one of the main causes for seismic activity: subduction of one Earth plate underneath another one in a stochastic way. The time series associated to this activity provides information which we have analyzed it by new techniques. This allows us to estimate where important earthquakes can occur although we cannot yet say when.

The solar wind is a tenuous turbulent plasma permeating the interplanetary space and is not well understood. A complex process called magnetic reconnection can act as a source of solar wind turbulence. Here we study this process using statistics. We demonstrate that high-order statistics of the magnetic field display a parabolic relation that is enhanced when magnetic reconnection occurs. Our results can help us understand the nature of solar wind turbulence.