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Multiple source analysis from InSAR data and new insights into fault activation: The 2005 Zarand, Iran, earthquake
Terra Nova ( IF 2.4 ) Pub Date : 2020-12-05 , DOI: 10.1111/ter.12513
Zeinab Golshadi 1 , Mehdi Rezapour 1 , Simone Atzori 2 , Stefano Salvi 2
Affiliation  

We have reinterpreted the causative fault parameters of the 2005 Zarand earthquake in the light of a new imagery study using Interferometric Synthetic Aperture Radar (InSAR). By conducting a joint inversion of two InSAR datasets, we can characterize the rupture as it relates to complex local structures. At first, the mainshock ruptured a nearly pure reverse fault, dipping ~65° NNW in the basement below the southeastern area of Zarand. Two more fault segments were subsequently activated: an oblique‐normal fault segment parallel to the first segment, dipping 61° to the south, and a normal‐oblique fault segment at the eastern termination of the rupture zone. The first fault segment ruptured the surface, while slip along the other two segments was confined to the lower sedimentary strata.

中文翻译:

InSAR数据的多源分析和对断层激活的新见解:2005年扎兰德,伊朗,地震

根据使用干涉合成孔径雷达(InSAR)进行的一项新影像研究,我们已经重新解释了2005年Zarand地震的成因断层参数。通过对两个InSAR数据集进行联合反演,我们可以表征与复杂局部结构有关的破裂。起初,主震破裂了一个几乎纯净的逆断层,在Zarand东南地区下方的地下室中向NNW方向倾斜了约65°。随后又激活了两个断层段:与第一段平行的倾斜-垂直断层段,向南倾斜61°,以及在断裂带东端的垂直倾斜断层段。第一个断层段使地表破裂,而沿其他两个段的滑动仅限于下部沉积层。
更新日期:2020-12-05
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