Impact Factor:4.848
DOI number:10.3390/rs8050376
Affiliation of Author(s):测绘与遥感科学系
Journal:Remote Sensing
Key Words:Illapel Earthquake; Sentinel-1A; Spectral Diversity; InSAR 2D Deformation.
Abstract:In this study, we mapped the co-seismic deformation of the 2015 Mw 8.3 Illapel, Chile earthquake with multiple Sentinel-1A TOPS data frames from both ascending and descending geometries. To meet the requirement of very high co-registration precision, an improved spectral diversity method was proposed to correct the co-registration slope error in the azimuth direction induced by multiple Sentinel-1A TOPS data frames. All phase jumps that appear in the conventional processing method have been corrected after applying the proposed method. The 2D deformation fields in the east-west and vertical directions are also resolved by combing D-InSAR and Offset Tracking measurements. The results reveal that the east-west component dominated the 2D displacement, where up to 2 m displacement towards the west was measured in the coastal area. Vertical deformations ranging between -0.25 and 0.25 m were found. The 2D displacements imply the collision of the Nazca plate squeezed the coast, which shows good accordance with the geological background of the region.
Indexed by:Journal paper
Document Code:376
Discipline:Engineering
First-Level Discipline:Surveying and Mapping
Document Type:J
Volume:8
Issue:5
Translation or Not:no
Included Journals:SCI
Links to published journals:https://www.mdpi.com/2072-4292/8/5/376