First interferograms released for central Italy earthquake

An earthquake of moment magnitude 6.2 (USGS) occurred in central Italy on 24 August 2016 causing many fatalities and severe damage to buildings. The first interferograms for the event have been produced, and show the crustal deformation caused by the earthquake.  

The Geospatial Information Authority of Japan (GSI) has produced an interferogram using data from the ALOS-2 satellite (credit: JAXA, GSI). The maximum ground displacement reached 20cm around Accumoli, and the features of the displacement are consistent with normal fault motion. The epicentre of this earthquake was less than 50km from the epicentre of the devastating L'Aquila in 2009 of moment magnitude 6.3 which caused over 300 fatalities.

The first interferogram from the Sentinel-1 satellites also shows the coseismic deformation associated with the earthquake.  The Sentinel-1 satellites use microwaves of a shorter wavelength than the ALOS-2 satellite, so even though there are more fringes in the Sentinel-1 interferogram, it shows the same total ground movement. (credit: ESA, PPO Labs).

Our thoughts go out to those affected by this earthquake.