Methods for estimating rotational components of seismic ground motion and their numerical comparisons

Chang Chen; Yun Wang; Yongxiang Wei; Shuilong Li; Qisheng Zhang

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Methods for estimating rotational components of seismic ground motion and their numerical comparisons

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摘要

Rotational components play an important role in natural earthquake research,engineering seismic investigation,building monitoring,seismic exploration and other fields.Traditional researches mainly focus on three translational components,but less on rotational ones.As the precision of rotational sensing techniques has increased,many scholars have paid more attention to the seismic rotational motions.Because the rotational observations are not very popular before and now,approximately converting the translational components into rotational components is utilized in rotation analysis.Based on numerical six-component seismic data with the finite difference method,we compare three different conversion methods,the travelling-wave,frequency-domain and the difference method,to analyze their characteristics and feasibilities when they are applied to estimate rotational components with translational observations.

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来源
《地震学报：英文版》 |2020年第4期|201-208|共8页
作者
Chang Chen; Yun Wang; Yongxiang Wei; Shuilong Li; Qisheng Zhang;
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作者单位

MWMC Research Group;

School of Geophysics and Information Technology;

China University of Geoscience;

Beijing 100083;

China;

Fujian Earthquake Agency;

Fuzhou 530001;

China;

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原文格式 PDF
正文语种 chi
中图分类大地（岩石界）物理学（固体地球物理学）;
关键词
rotational components; travelling-wave method; frequency-domain method; difference method;

Methods for estimating rotational components of seismic ground motion and their numerical comparisons

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