Multi-Sensor Geodetic Observations and Modeling of the 2017 Mw 6.3 Jinghe Earthquake
Multi-Sensor Geodetic Observations and Modeling of the 2017 Mw 6.3 Jinghe Earthquake
复制标题
2017年精河6.3级地震多传感器大地观测与模拟
DOI：
10.3390/rs11182157
复制
发表时间：
2019-09
期刊：
影响因子：
5
通讯作者：
Shan Xinjian
中科院分区：
文献类型：
--
作者：
Gong Wenyu;Zhang Yingfeng;Li Tao;Wen Shaoyan;Zhao Dezheng;Hou Liyan;Shan Xinjian
：2017 年 8 月 8 日（世界标准时间 05:15:04），中国新疆省发生了 6.3 级地震；震中位于天山北部库松木谢克山前断裂带（KPF）附近。我们使用多源和多轨卫星合成孔径雷达（SAR）图像和干涉SAR（InSAR）技术来重建不同视线几何形状的同震位移场。为了减少相位伪影，我们采用了 Sentinel-1 获取的多时相场景，并通过时间平均策略重建了同震变形。结合使用先进陆地观测卫星 2 (ALOS2) 上的相控阵型 L 波段合成孔径雷达 2 (PALSAR2) 传感器获得的单个干涉仪对，我们获得了五张观看几何形状略有不同的位移图；所有这些都用于约束大地测量反演以检索断层几何参数和滑移分布。基于震源机制和区域地质，我们构建了多个不同倾角方向（南倾和北倾）和不同走向角度的断层模型。两种模型都适合 InSAR 位移图，但具有不同深度的滑移分布。南倾模型的滑移深度与重定位的地震序列和区域地质结构最为一致，倾角约为42°。通过大地测量反演，最大滑移（0.25 m）发生在14.05 km处，相关倾角为89.56°。结果表明，该发震断层是KPF以北（前陆）的盲冲断层。考虑到所提出的盲断层（KPF）的相对位置以及天山山脉持续从北向南（N-S）缩短，该断层可能是由区域褶皱逆冲带向北扩展形成的。
: The Mw 6.3 Jinghe earthquake struck Xingjiang Province, China, on 8 August 2017 (05:15:04 UTC); the epicenter was near the Kusongmuxieke Piedmont Fault (KPF) of the northern Tian Shan Mountains. We used multi-source and multi-track satellite Synthetic Aperture Radar (SAR) imagery and Interferometric SAR (InSAR) techniques to reconstruct the coseismic displacement field from di ff erent line-of-sight geometries. To reduce the phase artifacts, we employed multi-temporal scenes acquired by Sentinel-1, and reconstructed the coseismic deformation through a temporal averaging strategy. Together with a single interferometric pair obtained using the Phased Array type L-band Synthetic Aperture Radar 2 (PALSAR2) sensor aboard the Advanced Land Observing Satellite 2 (ALOS2), we obtained five displacement maps with slightly di ff erent viewing geometries; all of which were used to constrain a geodetic inversion to retrieve the fault geometry parameters and slip distribution. Based on the focal mechanism and regional geology, we constructed multiple fault models that di ff er in dip direction (south and north dipping), and various striking angles. Both models fit the InSAR displacement maps, but have slip distributions of di ff erent depths. The slip depth of the south dipping model, with a dip of ~42 ◦ , is the most consistent with the relocated earthquake sequence and regional geological structure. Through the geodetic inversion, the maximum slip (0.25 m) occurred at 14.05 km and the associated rake was 89.56 ◦ . The result implies that the seismogenic fault is a blind thrust fault north of KPF (towards the foreland). Considering the relative locations of the suggested blind fault, the KPF, and the continuing north to south (N–S) shortening of the Tian Shan Mountains, this fault could be formed by the northward propagation of the regional fold-thrust belt.
登录
查看更多内容
DOI：
--
发表时间：
2013-04
期刊：
--
影响因子：
--
作者：
Rongjiang Wang;F. Diao;A. Hoechner
通讯作者：
Rongjiang Wang;F. Diao;A. Hoechner
DOI：
10.1080/00206819909465164
发表时间：
1999-08
期刊：
--
影响因子：
--
作者：
B. Burchfiel;E. Brown;Qidong Deng;Xianyue Feng;Li Jun;P. Molnar;Jianbang Shi;Zhangming Wu
通讯作者：
B. Burchfiel;E. Brown;Qidong Deng;Xianyue Feng;Li Jun;P. Molnar;Jianbang Shi;Zhangming Wu
DOI：
--
发表时间：
2011
期刊：
--
影响因子：
--
作者：
M. Doin;F. Lodge;S. Guillaso;R. Jolivet;C. Lasserre;G. Ducret;R. Grandin;E. Pathier;V. Pinel
通讯作者：
M. Doin;F. Lodge;S. Guillaso;R. Jolivet;C. Lasserre;G. Ducret;R. Grandin;E. Pathier;V. Pinel
2016 年呼图壁 6.0 级地震：天山北部前缘的盲目逆冲事件
影响因子：
3
作者：
Wang Xiaohang;Xu Caijun;Wen Yangmao;Wang Shuai;Xu Guangyu;Xiao Zhuohui;Fang Lihua
通讯作者：
Fang Lihua
影响因子：
3
作者：
Liu, Yunhua;Zhang, Guohong;Shan, Xinjian
通讯作者：
Shan, Xinjian