|
|||||
|
|
| 汶川 Ms8.0地震同震倾斜应变变化分析 | |
| 引用本文： | 赵斌,吕品姬,陈志遥,李正媛,谭凯.汶川 Ms8.0地震同震倾斜应变变化分析[J].大地测量与地球动力学,2010,30(3). |
| 作者姓名： | 赵斌 吕品姬 陈志遥 李正媛 谭凯 |
| 作者单位： | 1. 中国地震局地震研究所,武汉,430071;武汉大学卫星导航定位技术研究中心,武汉,430079 2. 中国地震局地震研究所,武汉,430071 3. 国家地震台网中心,北京,100045 |
| 基金项目： | 国家科技支撑计划，质检公益性行业科研专项基金"数字化地震前兆地壳形变观测方法标准研究"，国家自然科学基金，中国地震局地震研究所所长基金 |
| 摘 要： | 对汶川地震震中附近450 km范围内倾斜仪、应变仪记录到的同震变化做了筛选统计,并根据弹性半无限空间矩形位错模型,分别采用远场地震波资料、近场大地测量资料反演的同震滑移分布模型,正演计算震中附近台站的同震倾斜、应变变化.通过对实际观测与模拟计算结果的比较,初步表明:实际观测的同震倾斜变化方向与模拟计算结果存在75%的一致性,实际观测的同震倾斜变化比模拟值大约1～2个量级;实际观测的同震应变方向与模拟计算结果仅有33.3%的一致性,实际观测的同震应变变化与模拟计算值相当或仅大1个数量级. |
| 关 键 词： | 汶川 Ms8.0地震 同震倾斜 同震应变 模拟计算 弹性位错模型 |
ANALYSIS OF COSEISMIC TILT AND STRAIN VARIATIONS FOR WENCHUAN Ms8.0 EARTHQUAKE |
|
| Zhao Bin,Lu Pinji,Chen Zhiyao,Li Zhengyuan,Tan Kai.ANALYSIS OF COSEISMIC TILT AND STRAIN VARIATIONS FOR WENCHUAN Ms8.0 EARTHQUAKE[J].Journal of Geodesy and Geodynamics,2010,30(3). | |
| Authors: | Zhao Bin Lu Pinji Chen Zhiyao Li Zhengyuan Tan Kai |
| Institution: | Zhao Bin1,2),Lu Pinji1),Chen Zhiyao1),Li Zhengyuan3) and Tan Kai1)1)Institute of Seismology,CEA,Wuhan 4300712)GNSS Research Center of Wuhan University,Wuhan 4300793)China Earthquake Networks Center,Beijing 100045 |
| Abstract: | Coseismic tilt and strain offsets for Wenchuan Ms8.0 earthquake had been recorded by almost all of the continuous tilt and strain instruments in China.These offsets can be interpreted as qui-static tectonic changes after the earthquake.We calculate coseismic tit and strain offsets at the stations around about 450 km of the epicenter and coseismic tilt and strain offsets are simulated with half-space elastic dislocation model,particalarly using finite slip models inversed from far-field broadband seismic wav... |
| Keywords: | Wenchuan Ms8 0 earthquake coseismic tilt offset coseismic strain offset computational simulations elastic dislocation model |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |