Abstract
We characterize $117$ seismic events occurred in Chile and registered
at the Wetzell Geodetic Observatory (BWLRAS) in Germany in terms of
rotational seismic parameters. Using the Minimum Curvature Interpolation
method, we create a $2$D map with the Vertical Rotation Rate (VRR)
divided in three zones from the Chilean Coast: Northern, Central, and
Southern area. In order to describe the behavior of VRR along time, we
create a timeline and seismic moment model showing events in these areas
with different values of VRR. The analyzed data includes four large
earthquakes occurred in different zones with magnitudes greater than
$M_w$7.5. We focus our analysis in the values of the rotational
velocity for these earthquakes and show that the VRR does not have a
clear relation with the seismic moment magnitude. Our results open a new
way to describe and study seismic events. It can be useful to generate a
deeper understanding of the dynamics in the underlying processes
involved in the earthquake occurrence. As well, our results could serve
to improve safety regulations in construction and mining, since
important rotational movements may be present even within low moment
magnitude events.