ARIA Surface Displacement Map (Copernicus Sentinel-1) on 10/30/2020 for the Aegean Sea Earthquake

Date of Image: 10/30/2020 Date of Next Image: None Expected Summary: The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory and California Institute of Technology, both in Pasadena, California, created this displacement map with measurements of the surface displacements, in the radar line-of-sight, caused by the recent Mw 7.0 (October 30, 2020) earthquake beneath the Aegean Sea between Samos, Greece and Izmir, Turkey. The map was derived from synthetic aperture radar (SAR) images from the Copernicus Sentinel-1 satellites, operated by the European Space Agency (ESA). The team computed the interferometric difference (interferogram or interferometric SAR) between the post-event image acquired on October 30, 2020 with a pre-event image acquired on October 24, 2020, on the Sentinel-1 ascending (satellite moving north) track 131. The map covers an area of about 100 by 80 kilometers (60 by 50 miles). The color variation from blue to red shows displacements in the direction between the ground and the satellite (up and west). The western part of Samos island moved as much as 10 cm upward (red) and a small area of the north coast of Samos moved downward (blue) by up to 10 cm. The pattern of displacements is consistent with a fault sloping from the north coast of Samos to the north to the location where the earthquake rupture started. This data has not yet been validated. This displacement map should be used as guidance to identify areas of significant ground displacement, and may be less reliable over heavily vegetated areas and steeper slopes. Suggested Use: Areas in red are surface displacement up and to the west. Areas in blue are downward and to the east. This displacement map should be used as guidance to identify areas of significant ground displacement, and may be less reliable over heavily vegetated areas and steeper slopes. Satellite/Sensor: Copernicus Sentinel-1 Synthetic Aperture Radar (SAR) Resolution: 90 meters Credits: Contains modified Copernicus Sentinel data, processed by ESA. Analyzed by the NASA-JPL/Caltech ARIA team. This task was carried out at JPL funded by NASA. Esri REST Endpoint: See URL Section on right side of page WMS Endpoint: https://maps.disasters.nasa.gov/ags04/services/aegean_sea_earthquake_202010/aria_displacement_sentinel1_20201030/ImageServer/WMSServer Data Download: https://aria-share.jpl.nasa.gov/20201030-Samos-Izmir-EQ/Displacements/