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唐山地区快剪切波偏振图像及其变化
引用本文:高原,郑斯华,周蕙兰.唐山地区快剪切波偏振图像及其变化[J].地球物理学报,1999,42(2):228-232.
作者姓名:高原  郑斯华  周蕙兰
作者单位:1. 国家地震局分析预报中心 北京 100036; 2. 中国科学技术大学研究生院 北京 100039
基金项目:地震科学联合基金!197035,国家地震局分析预报中心青年基金
摘    要:根据剪切波分裂的相关函数计算-时间延迟校正-偏振分析检验的系列分析方法,利用唐山地区近源强地面运动记录,对快剪切波偏振图像进行了静态和动态的初步讨论。在唐山地区,有些相距很近的台站得到了完全不同的快剪切波偏振结果,其快剪切波偏振方向的离散性特征表明,在复杂地区不同台站观测结果的简单叠加可能是没有意义的。研究表明,快剪切波偏振方向可能存在着快速的变化。

关 键 词:唐山  偏振  剪切波分裂  快剪切波  
收稿时间:1998-09-29

POLARIZATION PATTERNS OF FAST SHEAR WAVE IN TANGSHAN REGION AND THEIR VARIATIONS
GAO YUAN, ZHENG SI-HUA, ZHOU HUI-LAN.POLARIZATION PATTERNS OF FAST SHEAR WAVE IN TANGSHAN REGION AND THEIR VARIATIONS[J].Chinese Journal of Geophysics,1999,42(2):228-232.
Authors:GAO YUAN    ZHENG SI-HUA  ZHOU HUI-LAN
Institution:1. Graduate School, University of Science &; Technology of China, Beijing 100039, China; 2. Center for Analysis &; Prediction, State Seismological Bureau, Beijing 100036, China
Abstract:By the method of calculation of cross Correlation function-elimination of timeDelay-examination of Polarization analysis (i.e. CDP analysis method) for shear wavesplitting, using near source records of strong ground motion in Tangshan region, thispaper gives preliminary static and dynamic discusses on polarization patterns of fastshear wave. In Tangshan region, different polarizations of fast shear wave are obtainedat some of stations which distances are very near each other According to scatteringpattern of polarization azimuths of fast shear-wave in Tangshan region, it suggests thatsimple overlapping of fast shear-wave polarizations observed in different stations is notof any meaning in a complicated tectonic zone. It is possible that there are quickvariations for polarization directions of fast shear-waves.
Keywords:Tangshan  Polarization  Shear-wave splithng  Fast shear-wave  
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