地面运动旋转分量观测综述--以中国台湾地区旋转运动观测为例

Review of the measurement of rotational component in ground motions:a case study of rotating motion observation in Taiwan, China

旋转地震学是一门全面研究由地震、爆破以及周围环境震动引发的地面旋转运动的新兴学科.随着观测水平的提高及旋转运动研究的深入,旋转运动研究的重要性也逐渐突显出来.目前国际上对于旋转地震学研究较多,而中国大陆地区鲜有文章提及旋转运动观测.本文从3个方面对旋转运动观测进行描述.首先基于经典弹性力学,介绍了旋转运动的基本理论,表明可以通过直接、间接的两种方法获得旋转量.其次介绍了旋转运动观测进展,表明观测技术的发展对旋转运动的观测具有重要影响.最后考虑到中国台湾是旋转运动观测研究较早并且较为深入的地区,重点介绍了中国台湾地区的观测实例.本文对旋转运动观测进展进行梳理,期望对国内开展旋转地震学观测及研究提供一定的帮助.

Rotational seismology is an emerging field for studying all aspects of rotational ground motions induced by earthquakes, explosions, and ambient vibrations. With the improvement of observation level and the deepening of research, the importance of the study of rotation motion is gradually highlighted. At present, there are many studies on rotational seismology in the world, but few articles mention rotational motion observation in China's Mainland. This paper describes the observation of rotational motion from three aspects. Firstly, in the framework of classical elasticity, the basic theory of rotational motion is introduced. The rotation can be obtained by direct and indirect methods. Secondly, the progress of rotational motion observation is introduced, which shows that the development of observation technology has an important impact on the observation of rotational motion. Finally, considering that Chinese Taiwan is an earlier and more in-depth area in the study of rotational motion observation, this paper focuses on the observation examples in Taiwan,China. In this paper, the progress of rotational motion observation is summarized, which is expected to provide some help for domestic rotational seismological observation and research.