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| ????????½???????????Mw7.1???????????? | |
| 引用本文： | 刘智荣,黄静宜,白相东,洪顺英,陈耀飞.????????????????????Mw7.1????????????[J].大地测量与地球动力学,2012,32(6):8-12. |
| 作者姓名： | 刘智荣 黄静宜 白相东 洪顺英 陈耀飞 |
| 作者单位： | 1. 防灾科技学院,北京,101601 2. 防灾科技学院,北京101601;中国地震局工程力学研究所,哈尔滨150080 3. 中国地震局地震预测研究所,北京,100036 |
| 基金项目： | 中国地震局防灾减灾青年科技基金(200908);中央高校基本科研业务费专项资金(ZY20120102);防灾科技学院教研项目(2012B01) |
| 摘 要： | ????InSAR??????ENVISAT ASAR?????????????2008??3??21??????7.1??????????α?????????????????????????????????????????????????????????????????????????????????????????????????????????????λ??????0~14 km???????????λ???ж?F2??2.05 km?????5.47 m??????F1????????????????????????????ж?F2?????F3-N/F3??S??????????????????????????????????????????????ж?????Σ????λ???????С?????????????Mo=5.16??10 19 N??m?????????7.07???? |
| 关 键 词： | ??????? InSAR ???????? ???? ??????? |
COSEISMIC SLIP DISTRIBUTION OF YUTIAN Mw7.1 EARTHQUAKE BASED ON STEEPEST DESCEND METHOD |
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| Liu Zhirong,Huang Jingyi,Bai Xiangdong,Hong Shunying,and Chen Yaofei.COSEISMIC SLIP DISTRIBUTION OF YUTIAN Mw7.1 EARTHQUAKE BASED ON STEEPEST DESCEND METHOD[J].Journal of Geodesy and Geodynamics,2012,32(6):8-12. | |
| Authors: | Liu Zhirong Huang Jingyi Bai Xiangdong Hong Shunying and Chen Yaofei |
| Institution: | 1) 1)Institute of Disaster Prevention Science and Technology,Beijing 1016012)Institute of Engineering Mechanics,China Earthquake Adiministration,Harbin 1500803)Institute of Earthquake Science,China Earthquake Adiministration,Beijing 100036 |
| Abstract: | Using InSAR technology and the ENVISAT ASAR data, this paper obtains the coseismic deformation fields of Yutian \%M\%w\{7.1\} earthquake happened on March 21, 2008.This paper inverts the coseismic slip distribution of Yutian earthquake with the Steepest Descent Method (SDM). The results are shown as follows.The inversion residual errors of the ascending and descending orbit surface deformation field are effectively controlled to small value; the major slip distribution is concentratedly located from 0 to 14 km depth along the fault plane; The largest slip value is about 5.47 m which is located in depth of 2.05 km along the fault plane of F2; the northern section of F1 is the oblique slip rupture nearly equal to left lateral strike slip and dip slip, while the middle section of F2 and southern section of F3 N/F3 S are basically the dip slip rupture with a little of left lateral strike slip; The slip is mainly concentrated in the middle and southern section, and the slip of the northern section is small, the total seismic moment M0 from inversion is about 5.16×10 19 Nm, equivalent to moment magnitude Mw7.07. |
| Keywords: | Yutian earthquake InSAR SDM inversion slip distribution |
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