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
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
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来自 Sentinel-1A 数据的 2015 年智利伊拉佩尔 Mw 8.3 地震的大陆范围二维同震变形：方位角协同配准误差的校正
DOI：
10.3390/rs8050376
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发表时间：
2016-05
期刊：
影响因子：
5
通讯作者：
Chen Xingguo
中科院分区：
文献类型：
--
作者：
Xu Bing;Li Zhiwei;Feng Guangcai;Zhang Zeyu;Wang Qijie;Hu Jun;Chen Xingguo
在这项研究中，我们绘制了2015年智利Mw8.3 Illapel地震的同震变形，其中多个Sentinel-1A TOPS数据帧来自上升和下降几何体。针对Sentinel-1A TOPS系统对方位向配准斜率误差的要求，提出了一种改进的谱分集方法，用于校正多帧Sentinel-1A TOPS数据引起的方位向配准斜率误差。在应用所提出的方法后，在传统的处理方法中出现的所有相位跳变已被校正。通过D-InSAR和偏移跟踪测量相结合的方法，得到了东西向和垂直方向的二维形变场。结果表明，东-西分量占主导地位的二维位移，其中高达2米的位移向西测量在沿海地区。垂直形变范围为-0.25 ~0.25 m，二维位移表明纳斯卡板块的碰撞挤压了海岸，这与该地区的地质背景相吻合。
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.
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DOI：
10.1109/radar.2013.6586141
发表时间：
2013-09
期刊：
2013 IEEE Radar Conference (RadarCon13)
影响因子：
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作者：
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通讯作者：
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期刊：
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作者：
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通讯作者：
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影响因子：
5.2
作者：
Grandin, Raphael;Vallee, Martin;Bollinger, Laurent
通讯作者：
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影响因子：
13.5
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通讯作者：
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DOI：
10.5270/fringe2015.pp70
发表时间：
2015-05
期刊：
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影响因子：
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作者：
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通讯作者：
U. Wegmüller;C. Werner;Tazio Stroozzi;A. Wiesmann;Othmar Frey;M. Santoro