Earthquakes of great magnitude are of great concern due to their high potential of damage and destruction
of the systems of objects and actions of the affected communities. This work considers the recent progresses
in the understanding of these events, particularly focusing on the co-seismic gravity variations. The challenges
in empirical research in the field are analysed under the perspective of two variables: the reliability and the
precision of the information about the risk. The research method consists of literature review and documentary
research focusing different technologies in gravity sensing, including one in development at the University of
Aberdeen. It is discussed if this technology could support the activities of the technical body in seismology.