Geoinformatics Unit

Preliminary Analysis of the Mw 8.0 Peru Earthquake Using Sentinel-1 Data

May 31, 2019

On 26 May 2019, a magnitude 8.0 earthquake struck Peru. The Geoinformatics Unit, RIKEN Center for Advanced Intelligence Project conducted a preliminary analysis of the affected areas using ESA earth observation data.

Analyzed pre-event image: 2019.04.27
Analyzed post-event image: 2019.05.27
Orbit direction: Ascending (orbit 47) - Incidence angle: 38.9 degrees - Line of Sight: Left to right

  1. South America and the location of the earthquake (blue beach ball). Yellow circles are the location of the large cities in Peru.
  2. Slip distribution map from USGS.
  3. SAR coherence map from a SAR pair (2019.04.27 master and 2019.05.27 slave). White lines are the borders of the regions in Peru.
  4. Synthetic aperture radar interferometry (InSAR) was carried out to investigate tectonic and non-tectonic deformations (VV mode). Each fringe is approximately 3 cm displacement.
  5. RGB color composite map of the affected area. R band: 2019.04.27 VH G band: 2019.04.27 VV B band: 2019.05.27 VV.


The information contained in the map is for general information purposes only. The accuracy of the analysis is not assessed yet. The information is provided by Geoinformatics Unit and while we endeavor to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the map or the information, products, services, or related graphics contained on it for any purpose. Any reliance you place on such information is therefore strictly at your own risk.