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| 昆仑山口西Ms8.1地震的地壳变形特征 | |
| 引用本文： | 乔学军,王琪,杜瑞林,陈宗时,游新兆,谭凯.昆仑山口西Ms8.1地震的地壳变形特征[J].大地测量与地球动力学,2002,22(4):6-11. |
| 作者姓名： | 乔学军 王琪 杜瑞林 陈宗时 游新兆 谭凯 |
| 作者单位： | 1. 中国地震局地震研究所,武汉,430071 2. 中国地震局第二地形变监测中心,西安,710054 3. 中国地震局分析预报中心,北京,100036 |
| 基金项目： | 国家自然科学基金项目 (4 0 0 740 2 4)，国家“十五”科技攻关项目 (2 0 0 1BA60 1B0 2 ) |
| 摘 要： | 利用全球定位系统1991－2001年及震后4期GPS观测数据。获得了2001年11月14日昆仑山口西地震（Ms8.1)的同震和震后形变运动图像，跨破裂带GPS网最近两点测得的最大同震形变为1.9m左右，而震后4个月断层蠕滑引起的变形约为80mm，破裂带两侧震后变形幅度具有非对称性。南侧震后变形基本是北侧的2－3倍。研究结果显示破裂带南盘在震后向偏东方向有明显移动，预示本次地震后能量的重新分配与积累，根据近几十年以来东昆仑断裂带的大地震由西向东扩展的特点，未来地震有向东迁移的可能。 |
| 关 键 词： | 地震 同震形变 震后形变 弹性位错模型 GPS网 全球定位系统 数据处理 |
| 文章编号： | 1671-5942(2002)04-0006-06 |
CHARACTERISTICS OF CRUSTAL DEFORMATION RELATING TO Ms8.1 KUNLUNSHAN EARTHQUAKE |
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| Qiao Xuejun\\{\},Wang Qi\\{\},Du Ruilin\\{\},Chen Zongshi\\{\} You Xinzhao\\{\} and Tan Kai\\{\}\, Institute of Seismology,CSB,Wuhan\ No. Crustal Deformation Monitoring Center,CSB,Xi'an\ Center for Analysis and Predication,CSB,Beijing\.CHARACTERISTICS OF CRUSTAL DEFORMATION RELATING TO Ms8.1 KUNLUNSHAN EARTHQUAKE[J].Journal of Geodesy and Geodynamics,2002,22(4):6-11. | |
| Authors: | Qiao Xuejun\\{\} Wang Qi\\{\} Du Ruilin\\{\} Chen Zongshi\\{\} You Xinzhao\\{\} and Tan Kai\\{\}\ Institute of Seismology CSB Wuhan\ No Crustal Deformation Monitoring Center CSB Xi'an\ Center for Analysis and Predication CSB Beijing\ |
| Institution: | Qiao Xuejun\+\{1)\},Wang Qi\+\{1)\},Du Ruilin\+\{1)\},Chen Zongshi\+\{2)\} You Xinzhao\+\{3)\} and Tan Kai\+\{1)\}\,1) Institute of Seismology,CSB,Wuhan\ 430071 2) No.2 Crustal Deformation Monitoring Center,CSB,Xi'an\ 710054 3) Center for Analysis and Predication,CSB,Beijing\ 100036 |
| Abstract: | The coseismic and post earthquake deformation velocities with \%M\%s 8.1 Kunlunshan earthquake occurred on Nov. 14, 2001 were calculated from the GPS data of 1991-2001 and 4 repeated GPS surveys after the event. The maximum coseismic and post earthquake changes are 1.9 m and 0.08 m respectively. From the result of post earthquake velocity, we inverse the crustal deformation characteristics of eastern Kunlun active fault with elastic dislocation model. It shows that the domain motion of eastern Kunlunshan fault is left lateral and strike slip. The eastward motion of the southern block of Kunlunshan fault implies the redistribution and reaccumulation of energy after the earthquake. According to the feature that strong earthquakes along Kunlunshan fault extended from west to east in recent decades coming earthquakes will possibilly move to eastern region. |
| Keywords: | M\%s 8 1 Kunlunshan earthquake coseismic deformation post earthquake deformation elastic dislocation model |
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