地电场多测向日变波形相位关联特征

发布时间：2018-05-01 03:29

本文选题：地电场 + 日变波形　；参考：《地震学报》2017年04期

【摘要】：本文以电磁环境、装置系统、日变波形均具有代表性的海安、平凉、瓜州等7个台站为对象,基于大地电场潮汐机理和裂隙水(电荷)渗流(移动)模型,应用快速傅里叶变换和矢量分析方法,研究这7个台站在2009—2015年多个时段、多个测向的地电场日变波形的相位关系及影响因素.结果显示:多方位地电场观测的日变波形之间具有同相或反相的相位关联特征;当观测地电场的电极与仪器的连接方式确定后,不同测向地电场日变波形的相位关联即由场地岩体裂隙优势方位所决定,且这种相位关联特征具有相对稳定性.
[Abstract]:In this paper, seven representative stations, such as electromagnetic environment, installation system and diurnal wave, which are representative of Haian, Pingliang and Guazhou, are taken as objects. Based on the earth electric field tidal mechanism and the seepage (movement) model of fissured water (charge), Fast Fourier transform (FFT) and vector analysis are used to study the phase relationship and influencing factors of diurnal waveform of geoelectric field in several periods of 2009-2015. The results show that the diurnal waveforms observed in multi-azimuth geoelectric field have the characteristics of phase correlation in the same phase or inverse phase, and when the mode of connection between the electrode and the instrument of the observed geoelectric field is determined, The phase correlation of diurnal waveform of different geoelectric field is determined by the dominant position of rock fracture in the site, and the phase correlation characteristic is relatively stable.
【作者单位】：中国地震局兰州地震研究所;兰州地球物理国家野外科学观测研究站;
【基金】：中国地震局监测预报司2017年专项任务(2017020401) 国家自然科学基金(41374080) 甘肃省强震跟踪项目(2014007-2)共同资助
【分类号】：P315.722

【相似文献】