云南地区震前舒曼谐振异常初步分析

Initial results on anomalous Schumann resonance before earthquakes in Yunnan

摘要:

舒曼谐振异常现象与地震活动性有较好的相关性,舒曼谐振异常现象可能与地震电离层扰动有关,是岩石层-大气层-电离层耦合的重要体现之一。本文详细介绍了云南舒曼谐振地震前兆观测台的系统结构和仪器参数,以及统计分析和震例分析的结果。永胜台观测数据显示2011年3月10日云南盈江M5.8级地震震前3天By分量出现舒曼异常,2011年1月23日临沧东部M4.0级地震震前2天By分量出现舒曼异常; 通海台观测的By分量频谱分析结果显示,2011年5月22日红河州M4.2级地震当日前3阶谐振频率对应谱密度出现强烈扰动。研究表明,舒曼谐振地震前兆监测是一种可行的监测手段。

Abstract:

There is a good correlation between anomalous Schumann resonance and seismic activities. Pre-earthquake Schumann resonance anomaly is an important manifestation of LAIC (Lithosphere-Atmosphere-Ionosphere Coupling), which is probably connected with seismic ionospheric disturbance. The system parameters and research results of statistical and seismic case analysis observed in Yunnan Schumann resonance monitor stations are introduced in this paper. Three days before the Yingjiang M5.8 earthquake on March 10, 2011, the component of Yongsheng station showed anomalous Schumann resonance. Two days before the Lincang M4.0 earthquake on January 23, 2011, there appeared familiar anomalous Schumann resonance in the By component of the same station. In the case of the Honghe M4. 2 earthquake on May 22, 2011, spectrum analysis results of Tonghai station on the same day displayed strong spectral density disturbances on the first three Schumann resonance frequencies. Research shows that Schumann resonance monitor is a feasible seismic electromagnetic precursory monitor method.