Continent-Wide 2-D Co-Seismic Deformation of the 2015 Mw 8.3 Illapel, Chile Earthquake Derived from Sentinel-1A Data: Correction of Azimuth Co-Registration Error
发布时间：2018-04-25
点击次数：
影响因子：4.848
DOI码：10.3390/rs8050376
所属单位：测绘与遥感科学系
发表刊物：Remote Sensing
关键字：Illapel Earthquake; Sentinel-1A; Spectral Diversity; InSAR 2D Deformation.
摘要：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.
论文类型：期刊论文
论文编号：376
学科门类：工学
一级学科：测绘科学与技术
文献类型：J
卷号：8
期号：5
是否译文：否
发表时间：2016-05-04
收录刊物：SCI
发布期刊链接：https://www.mdpi.com/2072-4292/8/5/376
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