In particular, the NSA scientific team led by Dr. Athanasios Gana, director of research at the Geodynamic Institute, for the first time of maps of tectonic disagreement on a European scale, as part of the European EP20 EP20 program.
It is noted that the tectonic deformation mapping on Earth is very useful for the assessment of seismic risk and for monitoring geoynamic changes on the surface of the planet. Deformation is derived from the changes in the elastic lithosphere (e.g., the solid cortex and upper mantel) caused by the plate's dectone.
Such changes are about the shape of a tectonic plate, the rotation made by the tectonic blocks ("blocks") compared to their vertical layers, as well as the accumulation of elastic energy. Measures in these quantities of tectonic disagreement have improved dramatically over recent years thanks to the use of satellite technologies, and in particular the Global Satellite Satellite System (GNSS).
The NCA team used a dectonic of 452 permanent GNSS stations, which was previously developed by a team of researchers at the Grenoble French University. Using open source software, Greek scientists have been calculating different parameters. The basic unit of tectonic disagreement is one ns / yr (nanostrain / year), which represents an annual change of one millimeter between two points that has to cover apart from 1 000 km.
It was found in large areas of the Eurasian plate, where the seismicity was scarce to no exist (eg North France and Poland), the rate of disinformation is small (10-20 ns / y ) is trivial (1-2 ns / y). By contrast, in areas of high highness, such as central Greece and central Italy, there is much more tectonic depression and measured between 50 and 150 ns / y.
These results, according to Mr. Ganza, similar to similar results for Greece and Italy by other scientific groups. A tectonic analysis will continue in conjunction with Lantmierer Sweden (LM), with the aim of producing such maps annually, including an increasing number of European GNSS stations.