Residual strain despite mega earthquake

https://www.nasa.gov/news/releases/latest/index.html

On Christmas Day 2016, the earth trembled in southern Chile. In the same region, the strongest earthquake ever measured occurred in 1960. A comparison of data from seismic and geodetic measurements during and after both earthquakes shows that the energy released by the 2016 quake accumulated over more than 56 years. According to this, the 1960 quake, despite its immense strength, must have left some strain in the underground. The study has now been published in the journal Geophysical Journal International.
Source: Psys.org
Residual strain despite mega earthquake
Psys.org