To improve knowledge, we must also densify the installation of instruments (seismometers, GPS) to the surface of the globe to monitor seismic activity and have much information to understand the phenomena, says Thorne Lay, and consider that strong earthquakes occur in areas where we do not provide.
UNDERSTANDING: Plate tectonics
Plate tectonics is a theoretical framework for understanding the face of the earth and its changes over geological time. Formulated in the early twentieth century it was fully recognized in the 1960s. It states that the Earth’s crust is composed of a dozen tectonic plates moving against each other. The essential activity of telluric (earthquakes and volcanism) is concentrated along plate boundaries. These boundaries can be of three kinds: they can move away from each other and along the ocean ridges, they are so divergent.